Podcasts about braf

The Oncology Nursing Podcast

Play Episode Listen Later Aug 15, 2025 4:13

BUFFALO, NY – August 15, 2025 – A new #research paper was #published in Volume 16 of Oncotarget on August 13, 2025, titled “Clinical and analytical validation of MI Cancer Seek®, a companion diagnostic whole exome and whole transcriptome sequencing-based comprehensive molecular profiling assay.” In this study, first authors Valeriy Domenyuk and Kasey Benson, along with corresponding author David Spetzler from Caris Life Sciences in Irving, Texas, introduce MI Cancer Seek, an FDA-approved test designed to deliver comprehensive tumor profiling. MI Cancer Seek demonstrated strong concordance with other FDA-approved companion diagnostics and serves as a powerful tool to guide treatment decisions in both adult and pediatric cancer patients. Cancer remains one of the most complex and diverse diseases to treat. With many targeted therapies currently FDA-approved, selecting the right one for a specific patient requires detailed genetic insights. MI Cancer Seek addresses this need by analyzing both DNA and RNA from a single tumor sample. The tool identifies key biomarkers linked to FDA-approved treatments for several major cancers, including breast, lung, colon, melanoma, and endometrial cancers. One of the most significant strengths of MI Cancer Seek is its ability to deliver accurate and reliable results from minimal tissue input (50 ng). Even when analyzing formalin-fixed paraffin-embedded samples, which are widely used but often degraded, the test maintained high levels of accuracy. It successfully detected important genetic alterations such as PIK3CA, EGFR, BRAF, and KRAS/NRAS mutations and measured tumor mutational burden (TMB) and microsatellite instability (MSI), both of which are key indicators for immunotherapy response. In clinical comparisons, the test achieved over 97% agreement with other FDA-approved diagnostic tools, confirming its reliability in detecting critical biomarkers. Notably, it showed near-perfect accuracy in identifying MSI status in colorectal and endometrial cancers. The researchers also demonstrated that the test maintains precision across different lab conditions and varying DNA input levels, confirming its robustness for routine clinical use. Beyond its role as a companion diagnostic, MI Cancer Seek incorporates additional features developed under its predecessor, MI Tumor Seek Hybrid. These include detection of homologous recombination deficiency, structural variants, and cancer-related viruses. It also includes advanced tools such as the Genomic Probability Score for identifying the tissue of origin in cancers of unknown primary, as well as a gene signature to guide first-line chemotherapy in colorectal cancer. “One limitation to be considered is the low PPA for ERBB2 CNA detection.” By offering deeper genetic insights from a single, small sample, MI Cancer Seek has the potential to streamline diagnostics, reduce testing costs, and connect patients to effective therapies more quickly. As precision medicine continues to expand, this assay stands out as a comprehensive and efficient solution for meeting the evolving needs of modern oncology. DOI - https://doi.org/10.18632/oncotarget.28761 Correspondence to - David Spetzler - dspetzler@carisls.com Video short - https://www.youtube.com/watch?v=D4hd2FxCYY8 Subscribe for free publication alerts from Oncotarget - https://www.oncotarget.com/subscribe/ To learn more about Oncotarget, please visit https://www.oncotarget.com and connect with us: Facebook - https://www.facebook.com/Oncotarget/ X - https://twitter.com/oncotarget Instagram - https://www.instagram.com/oncotargetjrnl/ YouTube - https://www.youtube.com/@OncotargetJournal LinkedIn - https://www.linkedin.com/company/oncotarget Pinterest - https://www.pinterest.com/oncotarget/ Reddit - https://www.reddit.com/user/Oncotarget/ Spotify - https://open.spotify.com/show/0gRwT6BqYWJzxzmjPJwtVh MEDIA@IMPACTJOURNALS.COM

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Episode 374: Colorectal Cancer Treatment Considerations for Nurses

Play Episode Listen Later Aug 1, 2025 53:58

“Colorectal cancer treatment is not just about eliminating a disease. It's about preserving life quality and empowering patients through every phase. So I think nurses are really at the forefront that we can do that in the oncology nursing space. So from early detection to survivorship, the journey is deeply personal. Precision medicine, compassionate care, and informed decision-making are reshaping outcomes. Treatment's just not about protocols. It's about people,” ONS member Kris Mathey, DNP, APRN-CNP, AOCNP®, gastrointestinal medical oncology nurse practitioner at The James Cancer Hospital of The Ohio State University Wexner Medical Center in Columbus, told Jaime Weimer, MSN, RN, AGCNS-BS, AOCNS®, manager of oncology nursing practice at ONS, during a conversation about colorectal cancer treatment. Music Credit: “Fireflies and Stardust” by Kevin MacLeod Licensed under Creative Commons by Attribution 3.0 Earn 1.0 contact hour of nursing continuing professional development (NCPD) by listening to the full recording and completing an evaluation at courses.ons.org by August 1, 2026. The planners and faculty for this episode have no relevant financial relationships with ineligible companies to disclose. ONS is accredited as a provider of nursing continuing professional development by the American Nurses Credentialing Center's Commission on Accreditation. Learning outcome: Learner will report an increase in knowledge related to the treatment of colorectal cancer. Episode Notes Complete this evaluation for free NCPD. ONS Podcast™ episodes: Episode 370: Colorectal Cancer Screening, Early Detection, and Disparities Episode 153: Metastatic Colorectal Cancer Has More Treatment Options Than Ever Before ONS Voice articles: Colorectal Cancer Prevention, Screening, Treatment, and Survivorship Recommendations Genetic Disorder Reference Sheet: Lynch Syndrome (Hereditary Nonpolyposis Colorectal Cancer) How Liquid Biopsies Are Used in Cancer Treatment Selection Oncology Drug Reference Sheet: 5-Fluorouracil Oncology Drug Reference Sheet: Oxaliplatin What Is a Liquid Biopsy? Clinical Journal of Oncology Nursing article: Colorectal Cancer in Young Adults: Considerations for Oncology Nurses Oncology Nursing Forum article: Neurotoxic Side Effects Early in the Oxaliplatin Treatment Period in Patients With Colorectal Cancer ONS Colorectal Cancer Learning Library ONS Biomarker Database (filtered by colorectal cancer) ONS Peripheral Neuropathy Symptom Interventions American Cancer Society colorectal cancer resources CancerCare Colorectal Cancer Alliance Colorectal Cancer Resource and Action Network Fight Colorectal Cancer National Comprehensive Cancer Network To discuss the information in this episode with other oncology nurses, visit the ONS Communities. To find resources for creating an ONS Podcast club in your chapter or nursing community, visit the ONS Podcast Library. To provide feedback or otherwise reach ONS about the podcast, email pubONSVoice@ons.org. Highlights From This Episode “Colorectal cancer has several different types, but there is one that dominates the landscape, and that is adenocarcinoma. So I think most of us have heard that. It's fairly common, and it accounts for about 95% of all colorectal cancers. It begins in the glandular cells lining the colon or rectum and often develops from polyps, in particular adenomatous polyps.” TS 1:41 “One of the biomarkers that we'll most commonly hear about is KRAS or NRAS mutations. This indicates tumor genetics, and these mutations suggest resistance to our EGFR inhibitors such as cetuximab. BRAF mutation or V600E is a more aggressive tumor subtype, and those may respond to our BRAF targeted therapy. … And then our MSI-high or MMR-deficient—microsatellite instability or mismatch repair deficiency—that really predicts an immunotherapy response and may indicate Lynch syndrome, which is a huge genetic component that takes a whole other level of counseling and genetic testing with our patients as well.” TS 6:02 “Polypectomy or a local excision—that removes our small tumors or polyps during that colonoscopy. And that's what's used for those stage 0 or early stage I cancers. A colectomy removes part or all of the colon. This may be open or laparoscopic. It can include a hemicolectomy, a segmental resection, or a total colectomy, so where you take out the entire part of the colon. A proctectomy removes part or all of the rectum. This may include a low anterior resection, also known as an LAR … or an abdominal perineal resection, which is an APR. … Colostomy or ileostomy—that diverts the stool to an external bag via stoma. Sometimes this is temporary or permanent depending on the type of surgery.” TS 14:11 “We'll have our patients say, ‘Hey, I want immunotherapy therapy. I see commercials on it that it works so well.' We have to make sure that these patients are good candidates for it, also that we're treating them adequately. We need to make sure that they have those biomarkers, so as I mentioned, the MSI-high or MMR tumors. Our MSS-stable tumors—they may benefit from newer combinations or clinical trials. Metastatic disease—immunotherapy may be used alone or with other treatments. And then in the neoadjuvant setting, some trials are really showing promising results using immunotherapy prior to surgery.” TS 25:38 “Antibody-drug conjugates are really an exciting frontier in all cancer treatments as well as colorectal cancer treatment. This is used mainly for patients with advanced or treatment-resistant disease, and these therapies combine the targeted power of monoclonal antibodies with the cell-killing ability of potent chemotherapy agents. They're still on the horizon for the most part in colorectal cancer. However, there is only one approved antibody-drug conjugate, or ADC, at this time, and that's trastuzumab deruxtecan, or Enhertu. That's approved for any solid tumor, such as colorectal cancer with HER2 IHC 3+. So again, looking back at that pathology in those markers, making sure that you have that HER2 mutation and that IHC.” TS 35:00 “There are a few myths going around about colorectal cancer treatment that can lead to confusion or even delayed care. One myth is only older men get colorectal cancer. As you heard me talk in my previous podcast on screening, unfortunately, this isn't necessarily true. Colorectal cancer affects both men and women and our cases in the younger population are rising. So our screening guidelines have changed to age 45 because we are seeing it in the younger population.” TS 45:54

Implementing Guideline-Concordant Care for a Patient With Newly Diagnosed BRAF-Mutant Stage IV Melanoma

Play Episode Listen Later Jul 31, 2025

CME credits: 1.00 Valid until: 31-07-2026 Claim your CME credit at https://reachmd.com/programs/cme/implementing-guideline-concordant-care-for-a-patient-with-newly-diagnosed-braf-mutant-stage-iv-melanoma/36328/ This online CME activity, presented in collaboration with the National Comprehensive Cancer Network (NCCN®), focuses on translating oncology clinical practice guidelines into practical strategies for treating melanoma. Participants will learn how to integrate clinical trial data into guideline-concordant treatment plans in the neoadjuvant, adjuvant, and metastatic settings. The program highlights the importance of evidence-based approaches and the use of immunotherapy for the treatment of melanoma. Attendees will also explore emerging data that could influence future treatment guidelines, patient case examples, and insights from international faculty to develop region-specific therapeutic tactics aligned with NCCN Guideline® recommendations. *This program was published on July 31st, 2025 and the information therein was up-to-date when created.

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Implementing Guideline-Concordant Care for a Patient With Newly Diagnosed BRAF-Mutant Stage IV Melanoma

Play Episode Listen Later Jul 31, 2025

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Case Consult: Current Standards and Emerging Directions in BRAF-Mutant mCRC Care

Play Episode Listen Later Jul 24, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/case-consult-current-standards-and-emerging-directions-in-braf-mutant-mcrc-care/36508/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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Advancing Molecular Therapies to First Line in BRAF-Mutated mCRC: Insights From Emerging Data

Play Episode Listen Later Jul 24, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/advancing-molecular-therapies-to-first-line-in-braf-mutated-mcrc-insights-from-emerging-data/36506/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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Advancing Molecular Therapies to First Line in BRAF-Mutated mCRC: Insights From Emerging Data

Play Episode Listen Later Jul 24, 2025

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Case Consult: Current Standards and Emerging Directions in BRAF-Mutant mCRC Care

Play Episode Listen Later Jul 24, 2025

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Maximizing Outcomes: Strategic Approaches in Metastatic CRC Treatment

Play Episode Listen Later Jul 24, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/maximizing-outcomes-strategic-approaches-in-metastatic-crc-treatment/36513/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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Maximizing Outcomes: Strategic Approaches in Metastatic CRC Treatment

Play Episode Listen Later Jul 24, 2025

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Immunotherapy at ASCO25: Drug Development, Melanoma Treatment, and More

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Play Episode Listen Later Jun 27, 2025 27:01

Dr. Diwakar Davar and Dr. Jason Luke discuss novel agents in melanoma and other promising new data in the field of immunotherapy that were presented at the 2025 ASCO Annual Meeting. TRANSCRIPT Dr. Diwakar Davar: Hello. My name is Diwakar Davar, and I am welcoming you to the ASCO Daily News Podcast. I'm an associate professor of medicine and the clinical director of the Melanoma and Skin Cancer Program at the University of Pittsburgh's Hillman Cancer Center. Today, I'm joined by my colleague and good friend, Dr. Jason Luke. Dr. Luke is a professor of medicine. He is also the associate director of clinical research and the director of the Phase 1 IDDC Program at the University of Pittsburgh's Hillman Cancer Center. He and I are going to be discussing some key advancements in melanoma and skin cancers that were presented at the 2025 ASCO Annual Meeting. Our full disclosures are available in the transcript of this episode. Jason, it is great to have you back on the podcast. Dr. Jason Luke: Thanks again so much for the opportunity, and I'm really looking forward to it. Dr. Diwakar Davar: Perfect. So we will go ahead and start talking a little bit about a couple of key abstracts in both the drug development immunotherapy space and the melanoma space. The first couple of abstracts, the first two, will cover melanoma. So, the first is LBA9500, which was essentially the primary results of RELATIVITY-098. RELATIVITY-098 was a phase 3 trial that compared nivolumab plus relatlimab in a fixed-dose combination against nivolumab alone for the adjuvant treatment of resected high-risk disease. Jason, do you want to maybe give us a brief context of what this is? Dr. Jason Luke: Yeah, it's great, thanks. So as almost all listeners, of course, will be aware, the use of anti–PD-1 immunotherapies really revolutionized melanoma oncology over the last 10 to 15 years. And it has become a standard of care in the adjuvant setting as well. But to review, in patients with stage III melanoma, treatment can be targeted towards BRAF with BRAF and MEK combination therapy, where that's relevant, or anti–PD-1 with nivolumab or pembrolizumab are a standard of care. And more recently, we've had the development of neoadjuvant approaches for palpable stage III disease. And in that space, if patients present, based on two different studies, either pembrolizumab or nivolumab plus ipilimumab can be given prior to surgery for somewhere in the 6- to 9-week range. And so all of these therapies have improved time-to-event endpoints, such as relapse-free or event-free survival. It's worth noting, however, that despite those advances, we've had a couple different trials now that have actually failed in this adjuvant setting, most high profile being the CheckMate-915 study, which looked at nivolumab plus ipilimumab and unfortunately was a negative study. So, with RELATIVITY-047, which was the trial of nivolumab plus relatlimab that showed an improvement in progression-free survival for metastatic disease, there's a lot of interest, and we've been awaiting these data for a long time for RELATIVITY-098, which, of course, is this adjuvant trial of LAG-3 blockade with relatlimab plus nivolumab. Dr. Diwakar Davar: Great. So with that, let's briefly discuss the trial design and the results. So this was a randomized, phase 3, blinded study, so double-blinded, so neither the investigators knew what the patients were getting, nor did the patients know what they were getting. The treatment investigational arm was nivolumab plus relatlimab in the fixed-dose combination. So that's the nivolumab standard fixed dose with relatlimab that was FDA approved in RELATIVITY-047. And the control arm was nivolumab by itself. The duration of treatment was 1 year. The patient population consisted of resected high-risk stage III or IV patients. The primary endpoint was investigator-assessed RFS. Stage and geography were the standard stratifying factors, and they were included, and most of the criteria were balanced across both arms. What we know at this point is that the 2-year RFS rate was 64% and 62% in the nivolumab and nivolumab-combination arms, respectively. The 2-year DMFS rate was similarly equivalent: 76% with nivolumab monotherapy, 73% with the combination. And similar to what you had talked about with CheckMate 915, unfortunately, the addition of LAG-3 did not appear to improve the RFS or DMFS compared to control in this patient population. So, tell us a little bit about your take on this and what do you think might be the reasons why this trial was negative? Dr. Jason Luke: It's really unfortunate that we have this negative phase 3 trial. There had been a lot of hope that the combination of nivolumab with relatlimab would be a better tolerated combination that increased the efficacy. So in the metastatic setting, we do have 047, the study that demonstrated nivolumab plus relatlimab, but now we have this negative trial in the adjuvant setting. And so as to why exactly, I think is a complicated scenario. You know, when we look at the hazard ratios for relapse-free survival, the primary endpoint, as well as the secondary endpoints for distant metastasis-free survival, we see that the hazard ratio is approximately 1. So there's basically no difference. And that really suggests that relatlimab in this setting had no impact whatsoever on therapeutic outcomes in terms of efficacy. Now, it's worth noting that there was a biomarker subanalysis that was presented in conjunction with these data that looked at some immunophenotyping, both from circulating T cells, CD8 T cells, as well as from the tumor microenvironment from patients who were treated, both in the previous metastatic trial, the RELATIVITY-047 study, and now in this adjuvant study in the RELATIVITY-098 study. And to briefly summarize those, what was identified was that T cells in advanced melanoma seemed to have higher expression levels of LAG-3 relative to T cells that are circulating in patients that are in the adjuvant setting. In addition to that, there was a suggestion that the magnitude of increase is greater in the advanced setting versus adjuvant. And the overall summary of this is that the suggested rationale for why this was a negative trial may have been that the target of LAG-3 is not expressed as highly in the adjuvant setting as it is in the metastatic setting. And so while the data that were presented, I think, support this kind of an idea, I am a little bit cautious that this is actually the reason for why the trial was negative, however. I would say we're not really sure yet as to why the trial was negative, but the fact that the hazard ratios for the major endpoints were essentially 1 suggests that there was no impact whatsoever from relatlimab. And this really makes one wonder whether or not building on anti–PD-1 in the adjuvant setting is feasible because anti–PD-1 works so well. You would think that even if the levels of LAG-3 expression were slightly different, you would have seen a trend in one direction or another by adding a second drug, relatlimab, in this scenario. So overall, I think it's an unfortunate circumstance that the trial is negative. Clearly there's going to be no role for relatlimab in the adjuvant setting. I think this really makes one wonder about the utility of LAG-3 blockade and how powerful it really can be. I think it's probably worth pointing out there's another adjuvant trial ongoing now of a different PD-1 and LAG-3 combination, and that's cemiplimab plus fianlimab, a LAG-3 antibody that's being dosed from another trial sponsor at a much higher dose, and perhaps that may make some level of difference. But certainly, these are unfortunate results that will not advance the field beyond where we were at already. Dr. Diwakar Davar: And to your point about third-generation checkpoint factors that were negative, I guess it's probably worth noting that a trial that you were involved with, KeyVibe-010, that evaluated the PD-1 TIGIT co-formulation of vibostolimab, MK-4280A, was also, unfortunately, similarly negative. So, to your point, it's not clear that all these third-generation receptors are necessarily going to have the same impact in the adjuvant setting, even if they, you know, for example, like TIGIT, and they sometimes may not even have an effect at all in the advanced cancer setting. So, we'll see what the HARMONY phase 3 trial, that's the Regeneron cemiplimab/fianlimab versus pembrolizumab control with cemiplimab with fianlimab at two different doses, we'll see how that reads out. But certainly, as you've said, LAG-3 does not, unfortunately, appear to have an impact in the adjuvant setting. So let's move on to LBA9501. This is the primary analysis of EORTC-2139-MG or the Columbus-AD trial. This was a randomized trial of encorafenib and binimetinib, which we will abbreviate as enco-bini going forward, compared to placebo in high-risk stage II setting in melanoma in patients with BRAF V600E or K mutant disease. So Jason, you know, you happen to know one or two things about the resected stage II setting, so maybe contextualize the stage II setting for us based on the trials that you've led, KEYNOTE-716, as well as CheckMate-76K, set us up to talk about Columbus-AD. Dr. Jason Luke: Thanks for that introduction, and certainly stage II disease has been something I've worked a lot on. The rationale for that has been that building off of the activity of anti–PD-1 in metastatic melanoma and then seeing the activity in stage III, like we just talked about, it was a curious circumstance that dating back about 7 to 8 years ago, there was no availability to use anti–PD-1 for high-risk stage II patients, even though the risk of recurrence and death from melanoma in the context of stage IIB and IIC melanoma is in fact similar or actually higher than in stage IIIA or IIIB, where anti–PD-1 was approved. And in that context, a couple of different trials that you alluded to, the Keynote-716 study that I led, as well as the CheckMate 76K trial, evaluated pembrolizumab and nivolumab, respectively, showing an improvement in relapse-free and distant metastasis-free survival, and both of those agents have subsequently been approved for use in the adjuvant setting by the US FDA as well as the European Medicines Agency. So bringing then to this abstract, throughout melanoma oncology, we've seen that the impact of anti–PD-1 immunotherapy versus BRAF and MEK-targeted therapy have had very similar outcomes on a sort of comparison basis, both in frontline metastatic and then in adjuvant setting. So it was a totally reasonable question to ask: Could we use adjuvant BRAF and MEK inhibitor therapy? And I think all of us expected the answer would be yes. As we get into the discussion of the trial, I think the unfortunate circumstance was that the timing of this clinical trial being delayed somewhat, unfortunately, made it very difficult to accrue the trial, and so we're going to have to try to read through the tea leaves sort of, based on only a partially complete data set. Dr. Diwakar Davar: So, in terms of the results, they wanted to enroll 815 patients, they only enrolled 110. The RFS and DMFS were marginally improved in the treatment arm but certainly not significantly, which is not surprising because the trial had only accrued 16% to 18% of its complete accrual. As such, we really can't abstract from the stage III COMBI-AD data to stage II patients. And certainly in this setting, one would argue that the primary treatment options certainly remain either anti–PD-1 monotherapy, either with pembrolizumab or nivolumab, based on 716 or 76K, or potentially active surveillance for the patients who are not inclined to get treated. Can you tell us a little bit about how you foresee drug development going forward in this space because, you know, for example, with HARMONY, certainly IIC disease is a part of HARMONY. We will know at least a little bit about that in this space. So what do you think about the stage IIB/C patient population? Is this a patient population in which future combinations are going to be helpful, and how would you think about where we can go forward from here? Dr. Jason Luke: It is an unfortunate circumstance that this trial could not be accrued at the pace that was necessary. I think all of us believe that the results would have been positive if they'd been able to accrue the trial. In the preliminary data set that they did disclose of that 110 patients, you know, it's clear there is a difference at a, you know, a landmark at a year. They showed a 16% difference, and that would be in line with what has been seen in stage III. And so, you know, I think it's really kind of too bad. There's really going to be no regulatory approach for this consideration. So using BRAF and MEK inhibition in stage II is not going to be part of standard practice moving into the future. To your point, though, about where will the field go? I think what we're already realizing is that in the adjuvant setting, we're really overtreating the total population. And so beyond merely staging by AJCC criteria, we need to move to biomarker selection to help inform which patients truly need the treatment. And in that regard, I don't think we've crystallized together as a field as yet, but the kinds of things that people are thinking about are the integration of molecular biomarkers like ctDNA. When it's positive, it can be very helpful, but in melanoma, we found that, unfortunately, the rates are quite low, you know, in the 10% to 15% range in the adjuvant setting. So then another consideration would be factors in the primary tumor, such as gene expression profiling or other considerations. And so I think the future of adjuvant clinical trials will be an integration of both the standard AJCC staging system as well as some kind of overlaid molecular biomarker that helps to enrich for a higher-risk population of patients because on a high level, when you abstract out, it's just clearly the case that we're rather substantially overtreating the totality of the population, especially given that in all of our adjuvant studies to date for anti–PD-1, we have not yet shown that there's an overall survival advantage. And so some are even arguing perhaps we should even reserve treatment until patients progress. I think that's a complicated subject, and standard of care at this point is to offer adjuvant therapy, but certainly a lot more to do because many patients, you know, unfortunately, still do progress and move on to metastatic disease. Dr. Diwakar Davar: Let's transition to Abstract 2508. So we're moving on from the melanoma to the novel immunotherapy abstracts. And this is a very, very, very fascinating drug. It's IMA203. So Abstract 2508 is a phase 1 clinical update of IMA203. IMA203 is an autologous TCR-T construct targeting PRAME in patients with heavily pretreated PD-1-refractory metastatic melanoma. So Jason, in the PD-1 and CTLA-4-refractory settings, treatment options are either autologous TIL, response rate, you know, ballpark 29% to 31%, oncolytic viral therapy, RP1 with nivolumab, ORR about 30-ish percent. So new options are needed. Can you tell us a little bit about IMA203? Perhaps tell us for the audience, what is the difference between a TCR-T and traditional autologous TIL? And a little bit about this drug, IMA203, and how it distinguishes itself from the competing TIL products in the landscape. Dr. Jason Luke: I'm extremely enthusiastic about IMA203. I think that it really has transformative potential based on these results and hopefully from the phase 3 trial that's open to accrual now. So, what is IMA203? We said it's a TCR-T cell product. So what that means is that T cells are removed from a patient, and then they can be transduced through various technologies, but inserted into those T cells, we can then add a T-cell receptor that's very specific to a single antigen, and in this case, it's PRAME. So that then is contrasted quite a bit from the TIL process, which includes a surgical resection of a tumor where T cells are removed, but they're not specific necessarily to the cancer, and they're grown up in the lab and then given to the patient. They're both adoptive cell transfer products, but they're very different. One is genetically modified, and the other one is not. And so the process for generating a TCR-T cell is that patients are required to have a new biomarker that some may not be familiar with, which is HLA profiling. So the T-cell receptor requires matching to the concomitant HLA for which the peptide is bound in. And so the classic one that is used in most oncology practices is A*02:01 because approximately 48% of Caucasians have A*02:01, and the frequency of HLA in other ethnicities starts to become highly variable. But in patients who are identified to have A*02:01 genotype, we can then remove blood via leukapheresis or an apheresis product, and then insert via lentiviral transduction this T-cell receptor targeting PRAME. Patients are then brought back to the hospital where they can receive lymphodepleting chemotherapy and then receive the reinfusion of the TCR-T cells. Again, in contrast with the TIL process, however, these T cells are extremely potent, and we do not need to give high-dose interleukin-2, which is administered in the context of TIL. Given that process, we have this clinical trial in front of us now, and at ASCO, the update was from the phase 1 study, which was looking at IMA203 in an efficacy population of melanoma patients who were refractory at checkpoint blockade and actually multiple lines of therapy. So here, there were 33 patients and a response rate of approximately 50% was observed in this population of patients, notably with a duration of response approximately a year in that treatment group. And I realize that these were heavily pretreated patients who had a range of very high-risk features. And approximately half the population had uveal melanoma, which people may be aware is a generally speaking more difficult-to-treat subtype of melanoma that metastasizes to the liver, which again has been a site of resistance to cancer immunotherapy. So these results are extremely promising. To summarize them from what I said, it's easier to make TCR-T cells because we can remove blood from the patient to transduce the T cells, and we don't have to put them through surgery. We can then infuse them, and based on these results, it looks like the response rate to IMA203 is a little bit more than double what we expect from lifileucel. And then, whereas with lifileucel or TILs, we have to give high-dose IL-2, here we do not have to give high-dose IL-2. And so that's pretty promising. And a clinical trial is ongoing now called the SUPREME phase 3 clinical trial, which is hoping to validate these results in a randomized global study. Dr. Diwakar Davar: Now, one thing that I wanted to go over with you, because you know this trial particularly well, is what you think of the likelihood of success, and then we'll talk a little bit about the trial design. But in your mind, do you think that this is a trial that has got a reasonable likelihood of success, maybe even a high likelihood of success? And maybe let's contextualize that to say an alternative trial, such as, for example, the TebeAM trial, which is essentially a T-cell bispecific targeting GP100. It's being compared against SOC, investigator's choice control, also in a similarly heavily pretreated patient population. Dr. Jason Luke: So both trials, I think, have a strong chance of success. They are very different kinds of agents. And so the CD3 bispecific that you referred to, tebentafusp, likely has an effect of delaying progression, which in patients with advanced disease could have a value that might manifest as overall survival. With TCR-T cells, by contrast, we see a very high response rate with some of the patients going into very durable long-term benefit. And so I do think that the SUPREME clinical trial has a very high chance of success. It will be the first clinical trial in solid tumor oncology randomizing patients to receive a cell therapy as compared with a standard of care. And within that standard of care control arm, TILs are allowed as a treatment. And so it will also be the first study that will compare TCR-T cells against TILs in a randomized phase 3. But going back to the data that we've seen in the phase 1 trial, what we observe is that the duration of response is really connected to the quality of the response, meaning if you have more than a 50% tumor shrinkage, those patients do very, very well. But even in patients who have less than 50% tumor shrinkage, the median progression-free survival right now is about 4.5 months. And again, as we think about trial design, standard of care options for patients who are in this situation are unfortunately very bad. And the progression-free survival in that population is probably more like 2 months. So this is a trial that has a very high likelihood of being positive because the possibility of long-term response is there, but even for patients who don't get a durable response, they're likely going to benefit more than they would have based on standard chemotherapy or retreatment with an anti–PD-1 agent. Dr. Diwakar Davar: Really, a very important trial to enroll, a trial that is first in many ways. First of a new generation of TCR-T agents, first trial to look at cell therapy in the control arm, a new standard of efficacy, but potentially also if this trial is successful, it will also be a new standard of trial conduct, a new kind of trial, of a set of trials that will be done in the second-line immunotherapy-refractory space. So let's pivot to the last trial that we were going to discuss, which was Abstract 2501. Abstract 2501 is a first-in-human phase 1/2 trial evaluating BNT142, which is the first-in-class mRNA-encoded bispecific targeting Claudin-6 and CD3 in patients with Claudin-positive tumors. We'll talk a little bit about this, but maybe let's start by talking a little bit about Claudin-6. So Claudin-6 is a very interesting new target. It's a target that's highly expressed in GI and ovarian tumors. There are a whole plethora of Claudin-6-targeting agents, including T-cell bispecifics and Claudin-6-directed CAR-Ts that are being developed. But BNT142 is novel. It's a novel lipid nanoparticle LNP-encapsulated mRNA. The mRNA encodes an anti–Claudin-6 CD3 bispecific termed RiboMAB-021. And it then is administered to the patient. The BNT142-encoding mRNA LNPs are taken up by the liver and translated into the active drug. So Jason, tell us a little bit about this agent. Why you think it's novel, if you think it's novel, and let's talk a little bit then about the results. Dr. Jason Luke: So I certainly think this is a novel agent, and I think this is just the first of what will probably become a new paradigm in oncology drug development. And so you alluded to this, but just to rehash it quickly, the drug is encoded as genetic information that's placed in the lipid nanoparticle and then is infused into the patient. And after the lipid nanoparticles are taken up by the liver, which is the most common place that LNPs are usually taken up, that genetic material in the mRNA starts to be translated into the actual protein, and that protein is the drug. So this is in vivo generation, so the patient is making their own drug inside their body. I think it's a really, really interesting approach. So for any drug that could be encoded as a genetic sequence, and in this case, it's a bispecific, as you mentioned, CD3-Claudin-6 engager, this could have a tremendous impact on how we think about pharmacology and novel drug development moving into the future in oncology. So I think it's an extremely interesting drug, the like of which we'll probably see only more moving forward. Dr. Diwakar Davar: Let's maybe briefly talk about the results. You know, the patient population was heavily pretreated, 65 or so patients, mostly ovarian cancer. Two-thirds of the patients were ovarian cancer, the rest were germ cell and lung cancer patients. But let's talk a little bit about the efficacy. The disease control rate was about 58% in the phase 1 population as a whole, but 75% in the ovarian patient population. Now tell us a little bit about the interesting things about the drug in terms of the pharmacokinetics, and also then maybe we can pivot to the clinical activity by dose level. Dr. Jason Luke: Well, so they did present in their presentation at ASCO a proportionality showing that as higher doses were administered, that greater amounts of the drug were being made inside the patient. And so that's an interesting observation, and it's an important one, right? Suggesting that the pharmacology that we classically think of by administering drugs by IV, for example, would still be in play. And that did translate into some level of efficacy, particularly at the higher dose levels. Now, the caveat that I'll make a note of is that disease control rate is an endpoint that I think we have to be careful about because what that really means is sometimes a little bit unclear. Sometimes patients have slowly growing tumors and so on and so forth. And the clinical relevance of disease control, if it doesn't last at least 6 months, I think is probably pretty questionable. So I think these are extremely interesting data, and there's some preliminary sense that getting the dose up is going to matter because the treatment responses were mostly observed at the highest dose levels. There's also a caveat, however, that across the field of CD3 bispecific molecules like this, there's been quite a bit of heterogeneity in terms of the response rate, with some of them only really generating stable disease responses and other ones having more robust responses. And so I think this is a really interesting initial foray into this space. My best understanding is this molecule is not moving forward further after this, but I think that this really does set it up to be able to chase after multiple different drug targets on a CD3 bispecific backbone, both in ovarian cancer, but then basically across all of oncology. Dr. Diwakar Davar: Perfect. This is a very new sort of exciting arena where we're going to be looking at, in many ways, these programmable constructs, whether we're looking at in vivo-generated, in this case, a T-cell bispecific, but we've also got newer drugs where we are essentially giving drugs where people are generating in vivo CAR T, and also potentially even in vivo TCR-T. But certainly lots of new excitement around this entire class of drugs. And so, what we'd like to do at this point in time is switch to essentially the fact that we've got a very, very exciting set of data at ASCO 2025. You've heard from Dr. Luke regarding the advances in both early drug development but also in advanced cutaneous melanoma. And Jason, as always, thank you so much for sharing your very valuable and great, fantastic insights with us on the ASCO Daily News Podcast. Dr. Jason Luke: Well, thanks again for the opportunity. Dr. Diwakar Davar: And thank you to our listeners for taking your time to listen today. You will find the links to the abstracts that we discussed today in the transcript of this episode. And finally, if you value the insights that you hear on the ASCO Daily News Podcast, please take a moment to rate, review, and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. Follow today's speakers:   Dr. Diwakar Davar   @diwakardavar   Dr. Jason Luke @jasonlukemd Follow ASCO on social media:    @ASCO on Twitter      ASCO on Bluesky  ASCO on Facebook      ASCO on LinkedIn Disclosures:    Dr. Diwakar Davar:     Honoraria: Merck, Tesaro, Array BioPharma, Immunocore, Instil Bio, Vedanta Biosciences    Consulting or Advisory Role: Instil Bio, Vedanta Biosciences    Consulting or Advisory Role (Immediate family member): Shionogi    Research Funding: Merck, Checkmate Pharmaceuticals, CellSight Technologies, GSK, Merck, Arvus Biosciences, Arcus Biosciences    Research Funding (Inst.): Zucero Therapeutics    Patents, Royalties, Other Intellectual Property: Application No.: 63/124,231 Title: COMPOSITIONS AND METHODS FOR TREATING CANCER Applicant: University of Pittsburgh–Of the Commonwealth System of Higher Education Inventors: Diwakar Davar Filing Date: December 11, 2020 Country: United States MCC Reference: 10504-059PV1 Your Reference: 05545; and Application No.: 63/208,719 Enteric Microbiotype Signatures of Immune-related Adverse Events and Response in Relation to Anti-PD-1 Immunotherapy    Dr. Jason Luke:    Stock and Other Ownership Interests: Actym Therapeutics, Mavu Pharmaceutical, Pyxis, Alphamab Oncology, Tempest Therapeutics, Kanaph Therapeutics, Onc.AI, Arch Oncology, Stipe, NeoTX    Consulting or Advisory Role: Bristol-Myers Squibb, Merck, EMD Serono, Novartis, 7 Hills Pharma, Janssen, Reflexion Medical, Tempest Therapeutics, Alphamab Oncology, Spring Bank, Abbvie, Astellas Pharma, Bayer, Incyte, Mersana, Partner Therapeutics, Synlogic, Eisai, Werewolf, Ribon Therapeutics, Checkmate Pharmaceuticals, CStone Pharmaceuticals, Nektar, Regeneron, Rubius, Tesaro, Xilio, Xencor, Alnylam, Crown Bioscience, Flame Biosciences, Genentech, Kadmon, KSQ Therapeutics, Immunocore, Inzen, Pfizer, Silicon Therapeutics, TRex Bio, Bright Peak, Onc.AI, STipe, Codiak Biosciences, Day One Therapeutics, Endeavor, Gilead Sciences, Hotspot Therapeutics, SERVIER, STINGthera, Synthekine    Research Funding (Inst.): Merck , Bristol-Myers Squibb, Incyte, Corvus Pharmaceuticals, Abbvie, Macrogenics, Xencor, Array BioPharma, Agios, Astellas Pharma , EMD Serono, Immatics, Kadmon, Moderna Therapeutics, Nektar, Spring bank, Trishula, KAHR Medical, Fstar, Genmab, Ikena Oncology, Numab, Replimmune, Rubius Therapeutics, Synlogic, Takeda, Tizona Therapeutics, Inc., BioNTech AG, Scholar Rock, Next Cure    Patents, Royalties, Other Intellectual Property: Serial #15/612,657 (Cancer Immunotherapy), and Serial #PCT/US18/36052 (Microbiome Biomarkers for Anti-PD-1/PD-L1 Responsiveness: Diagnostic, Prognostic and Therapeutic Uses Thereof)    Travel, Accommodations, Expenses: Bristol-Myers Squibb, Array BioPharma, EMD Serono, Janssen, Merck, Novartis, Reflexion Medical, Mersana, Pyxis, Xilio

university ai spring patients stage pittsburgh treatments phase fda iv pfizer supreme keynote gi werewolf cart relation mrna pd bayer immune abstract mg oncology merck endeavor caucasians janssen checkmate soc novartis melanoma relativity royalties lag cancer care accommodations immunotherapy gsk asco genentech orr abbvie bristol myers squibb drug development takeda stipe regeneron hla gilead sciences adverse events mek rfs nektar us fda lnp onc european medicines agency prognostic cancer immunotherapy braf eisai cd3 tils asco annual meeting pyxis iic iiib iib cd8 t servier rubius ctdna ctla rp1 incyte emd serono alnylam iiia genmab moderna therapeutics 76k braf v600e eortc tigit ajcc tesaro jason luke transcript dr array biopharma synlogic gp100

S13 Ep22: BRAF-Mutant and HER2+ mCRC Management Strategies Are Becoming Increasingly Tailored: With Chandler Park, MD, and Midhun Malla, MD

OncLive® On Air

Play Episode Listen Later Jun 26, 2025 9:27

In this episode of MedNews Week's Oncology Unplugged, host Chandler Park, MD, a medical oncologist at Norton Cancer Institute in Louisville, Kentucky, was rejoined by Midhun Malla, MD, a gastrointestinal oncologist at Allegheny Health Network in Pittsburgh, Pennsylvania, to discuss treatment personalization in metastatic colorectal cancer (mCRC), with a focus on BRAF V600E–mutant tumors, HER2-altered disease, and the clinical implications of tumor sidedness.

GI Cancer Research at ASCO25: Plenary Highlights and More

Play Episode Listen Later Jun 24, 2025 20:47

Dr. Shaalan Beg and Dr. Kristen Ciombor discuss practice-changing studies in GI cancers and other novel treatment approaches that were presented at the 2025 ASCO Annual Meeting. Transcript Dr. Shaalan Beg: Hello, I'm Dr. Shaalan Beg, welcoming you to the ASCO Daily News Podcast. I'm a medical oncologist and an adjunct associate professor at UT Southwestern Medical Center in Dallas, Texas. There were some remarkable advances in gastrointestinal cancers that were presented at the 2025 ASCO Annual Meeting, and I'm delighted to be joined by Dr. Kristen Ciombor to discuss some exciting GI data. Dr. Ciombor is the Ingram Associate Professor of Cancer Research and a co-leader of Translational Research and the Interventional Oncology Research Program at the Vanderbilt Ingram Cancer Center. Our full disclosures are available in the transcript of this episode. Dr. Ciombor, it's great to have you on the podcast today. Dr. Kristen Ciombor: Thanks, Dr Beg. It's great to be here. Dr. Shaalan Beg: Alright, let's kick it off. Big year for GI cancers. We'll start off with LBA1. This was the ATOMIC study sponsored by NCI and the National Clinical Trials Network (NCTN) and the Alliance group. This is a randomized study of standard chemotherapy alone or combined with atezolizumab as adjuvant therapy for stage III mismatch repair deficient colorectal cancer. Dr. Kristen Ciombor: I think this study was really definitely practice-changing, as you can tell because it was a Plenary. But I do have some concerns in terms of how we're actually going to implement this and whether this is the final answer in this disease subtype. So, as you said, the patients were enrolled with stage III resected mismatch repair deficient colon cancer, and then they were randomized to either modified FOLFOX6 with or without atezolizumab. And that's where it starts to become interesting because not many of us give FOLFOX for 6 months like was done in this study. Obviously, the study was done over many years, so that was part of that answer, but also the patients received atezolizumab for a total of 12 months. So the question, I think, that comes from this abstract is, is this practical and is this the final answer? I do think that this is practice-changing, and I will be talking to my patients with resected mismatch repair deficient colon cancer about FOLFOX plus atezolizumab. I think the big question is, do these patients need chemotherapy? And can we do a neoadjuvant approach instead? And that's where we don't have all the answers yet. Dr. Shaalan Beg: Yeah, but it has been great to see immunotherapy make its way into the adjuvant space after having made such a big impact in the metastatic space, but still some unanswered questions in terms of the need for chemotherapy and then the duration of therapy, which I guess we'll have to stay tuned in for the next couple of years to to get a lot of those questions answered. Dr. Kristen Ciombor: Yeah, but a big congratulations to the study team, to the NCTN, the NCI. I mean, this is really a great example of federally funded research that needs to continue. So, great job by the study team. The DFS 10% difference is really very large and certainly a practice-changing study. Dr. Shaalan Beg: Yeah, and and sticking with colon cancer, and and this another federally funded study, but this time funded by a Canadian cancer clinical trials group was LBA3510. This is the CHALLENGE study. It's a randomized phase 3 trial of the impact of a structured exercise program on disease-free survival for stage III or high-risk stage II colon cancer. This study got a lot of buzz, a lot of mainstream press coverage, and a lot of discussions on what that means for us for the patients who we're going to be seeing next week in our clinic. What was your takeaway? Dr. Kristen Ciombor: Yeah, this is a really interesting study, and I was so glad to see it presented because this partially answers one of the questions that patients always have for us in clinic, right? You know, once they've completed their standard chemotherapy and surgery, what else can they do to help prevent recurrence? And so we've always known and sort of extrapolated that healthy lifestyle habits are good, but now we have data, particularly in these patients. Most of them were stage III colon cancer patients, those had high-risk stage II cancer. And basically, the goal was to increase their physical activity by at least 10 MET hours per week. So, my big question, of course, as I came into this presentation was, “Okay, what does that mean exactly? How does that translate to real life?” And really what the author presented and explained was that basically most patients could hit their target by adding a 45- to 60-minute brisk walk 3 to 4 times a week. So I think this is very approachable. Now, in the confines of the study, this was a structured exercise program, so it wasn't just patients doing this on their own. But I do think kind of extrapolating from that, that this is very achievable for most patients. And not only did this prevent recurrence of their prior cancer, but actually the rate of new primary cancer diagnoses, was less, which is really interesting, especially in the breast and prostate cancer. So this was a really interesting, and I think practice-changing study as well, especially given that this is something that most patients can do. Dr. Shaalan Beg: Yeah, and there was a lot of discussion in the hallways after the presentation in terms of how this really changes our existing practice because most folks already recommend exercise as a way for improving outcomes in cancer patients. So we've already been doing that. Now we have some data on how much it can impact the benefit. But there was some discussion about what the actual degree of impact was. There was a drop-off rate in terms of how long folks were able to stick with this exercise regimen. But you've seen this in clinic when someone have their surgery, they have their chemotherapy, they've been so intimately involved with the oncology world, with the oncology practice, and they somehow feel that they're being let loose into this mean, angry world without any guidance and they're looking for something to do. “What more can I do in terms of my lifestyle?” And then here we have very solid data, as solid as can be for an intervention like exercise, showing that there is an impact and you can give a prescription for exercise when someone wraps up their chemotherapy for colon cancer, thanks to the study. Dr. Kristen Ciombor: Yeah. It was a great study. Dr. Shaalan Beg: Moving to gastroesophageal cancer, another late-breaking abstract. This is LBA5. The MATTERHORN trial was a phase 3 trial of durvalumab plus FLOT for resectable GE junction and gastric cancer. And again, another area where immunotherapy has made an impact, and here we're seeing it move closer for earlier-stage disease. What was your take-home for the MATTERHORN trial? Dr. Kristen Ciombor: Yeah, so this study looked at neoadjuvant perioperative durvalumab plus our current standard chemotherapy of FLOT versus placebo plus FLOT. And this was a large study, almost 1,000 patients were randomized. And the primary endpoint was event-free survival, and it was definitely met in favor of the D + FLOT arm, as Dr. Klempner discussed after Dr Janjigian's presentation. I do think there are still some unanswered questions here. Overall survival is not yet mature, so we do have to wait and see how that shakes out. But it's very interesting and kind of is reflective of what, as you said, we're looking at earlier and earlier lines of therapy, particularly with immunotherapy, in these GI cancer spaces. So it makes a lot of sense to test this and and to look at this. So the toxicity was pretty similar to what we would expect. Primary endpoint was met, but again, we'll have to wait and see what the survival data looks like. Dr. Shaalan Beg: Yeah, and in oncology, we know, especially for treatment that does add additional cost, it does add additional potential toxicity that we want to see that overall survival nudged. I did see some polls on social media asking folks whether their practices changed from this, and I think the results were favoring adding durvalumab for this group of patients but understanding that there are caveats to the addition of treatments and the eventual FDA approval in that indication as well. Dr. Kristen Ciombor: Exactly. I completely agree with that. Dr. Shaalan Beg: All right. How about we stick with gastroesophageal cancer? LBA4002 was trastuzumab deruxtecan versus ramucirumab plus paclitaxel for second-line treatment in HER2-positive unresectable or metastatic gastric cancer or GE junction cancer. This was the DESTINY-Gastric04 study. And again, antibody-drug conjugates making a big impact across different diseases. And here we have more data in the HER2-positive gastric cancer space. Your thoughts on this study? Dr. Kristen Ciombor: Yeah, so this is a really important space in gastroesophageal cancer because the HER2 positivity rate is fairly high as compared to some of our other tumor types. So, I do think one of the important things was that patients did have biopsy confirmation of HER2 status, which was very important, and then they were randomized to either T-DXd versus the kind of second-line standard of ramucirumab-paclitaxel. So this was a great practical study and really answers a question that we had for a while in terms of does anti-HER2 therapy in the second-line really impact and improve survival. So we did see a statistically significant improvement favoring T-DXd. I do think it's always important to look at toxicity, though, too. And there was about almost 14% rate of interstitial lung disease, which of course is the most feared toxicity from some of these antibody-drug conjugates, especially T-DXd. So I do think it's important to keep that in mind, but this is definitely a great addition to the armamentarium for these HER2-positive patients. Dr. Shaalan Beg: And pancreas cancer was on the stage after a very long time with a positive clinical trial. This is Abstract 4006. These were preliminary results from a phase 2 study of elraglusib in combination with gemcitabine/nab-paclitaxel versus gemcitabine/nab-paclitaxel alone for previously untreated metastatic pancreas cancer. This is a frontline clinical trial of gemcitabine/nab-paclitaxel plus/minus the study drug. There were other cohorts in this study as well, but they reported the results of their part 3B arm. And great to see some activity in the pancreas space. And your thoughts? Dr. Kristen Ciombor: Yeah, we definitely need better treatments in pancreas cancer. This was a very welcome presentation to see. The elraglusib is an inhibitor of GSK-3beta, and it's thought that that mediates drug resistance and EMT. And so this is, I think, a perfect setting to test this drug. So patients basically were randomized. Patients with metastatic pancreas cancer were randomized 2: 1 to gemcitabine/nab-paclitaxel plus or minus this elraglusib. So, what we saw was that overall survival was better with the addition of this new drug. And overall, not only the 1-year overall survival, but also median overall survival. The thing that was interesting, though, was that we saw that the overall survival rates were 9.3 months with the combination versus 7.2 months with just gemcitabine/nab-paclitaxel. And that's a little bit lower than we've seen in other studies. So, not sure what was going on there. Was it the patients that were a bit sicker? Was it a patient selection, you know, thing? I'm not really sure how to explain that so much. Also, the toxicity profile was much higher in terms of visual impairment, with over 60% of patients being treated with the combination versus 9% with gemcitabine/nab-paclitaxel. So these were mild, grade 1 and 2, but still something to be cautious about. Dr. Shaalan Beg: And especially with this being a phase 2 trial, making sure that in a larger study we're able to better evaluate the toxicity and see if the control arm in the larger confirmatory study performs differently will be really important before this compound makes it to the clinic in our space. But very exciting to see these kinds of results for pancreas adenocarcinoma. Dr. Kristen Ciombor: Yeah. Dr. Shaalan Beg: We've talked, it seems, a couple of times on this podcast about the BREAKWATER clinical trial. We did hear PFS and updated OS data, updated overall survival data on first-line encorafenib plus cetuximab plus modified FOLFOX6 for BRAF-mutated colorectal cancer. This was LBA3500. And eagerly anticipated results – we have all previously heard the progression-free survival results – but here we heard updated overall survival results, and very well-received study it seemed from the audience that time. So what are your takeaways on the updated results for BREAKWATER? Dr. Kristen Ciombor: In my opinion, this was one of the most practice-confirming studies. As you mentioned, we've already seen some of the preliminary data of BREAKWATER at prior meetings. But really what was particularly impactful for me was the median overall survival with the BREAKWATER regimen. So, again, patients received FOLFOX, encorafenib cetuximab in the first line if they had BRAF-mutated V600E-mutated colorectal cancer. And the median PFS was 12.8 months, which was actually really remarkable in this traditionally very aggressive, poor prognosis subtype of tumors. So, by seeing a median overall survival of 30.3 months was just incredible, in my opinion. Just a few years ago, that was considered the median overall survival for all comers for metastatic colorectal cancer. And we know the median overall survival was more in the less than 12 months range for BRAF. So this was incredibly impactful, and I think should be absolutely practice-changing for anyone who is eligible for this regimen. I think again, where the practice meets the study is what's kind of important to think about too, how long did patients get FOLFOX, and certainly it adds toxicity to add a BRAF-targeted regimen on top of FOLFOX already. So, one of the other interesting things about the study, though, was that even though it didn't complete treatment, they actually did look at encorafenib/cetuximab alone and in the first line without chemotherapy. And those preliminary results actually looked okay, especially for patients who might not be able to tolerate chemotherapy, which we certainly see in practice. So, overall, definitely more data. And I agree that it's certainly practice-changing. Dr. Shaalan Beg: And it completely, as you mentioned, changes the outlook for a person who's diagnosed with BRAF-mutated metastatic colon cancer today versus even 7 or 8 years ago. Dr. Kristen Ciombor: And we're seeing this over and over in other subtypes too, but how you choose to treat the patient up front really matters. So really giving the right regimen up front is the key here. Dr. Shaalan Beg: And along the same lines, Abstract 3501 wanted to answer the question on whether people with MSI-high metastatic colorectal cancer need double checkpoint inhibitor therapy or is single therapy enough. So this [CheckMate-8HW] study compared nivo plus ipi with nivo alone, nivo monotherapy for MSI-high metastatic colorectal cancer. And we've known that both of these are fairly active regimens, but we also know the chance of immune-related adverse events is significantly higher with combination therapy. So this was a much-needed study for this group of patients. And what were your takeaways here? Dr. Kristen Ciombor: This, of course, has been really nivo-ipi in the first-line MSI-high metastatic colorectal cancer is now a standard of care. And not everybody is eligible for it, and there could be reasons, toxicity reasons, and other things too. But as we've been seeing for the last couple of years, immunotherapy clearly beats chemo in this space. And now looking at doublet versus single immunotherapy treatment in the first line, I think really nivo-ipi does beat out monotherapy. I will say, however, there is a caveat in that we still haven't seen the nivo-ipi versus nivo in the first line. So what has been presented thus far has been across all lines of therapy, and that does muddy the waters a little bit. So definitely looking forward and and we've asked this many times and based on the statistical plan and and what not, you know, we just haven't seen that data yet. But I do think it's becoming increasingly important to consider doublet immunotherapy for these patients as long as there are no contraindications. With the again, with the caveat that we have to have these toxicity discussions in the clinic with patients because many patients can tolerate it, you know, this regimen fairly well, but there can be very severe toxicities. So, I think an informed discussion should really be had with each patient before moving forward. Dr. Shaalan Beg: Yeah, informed decision, making them aware of the potential of real significant toxicities, immune-related toxicities with double therapy. But I am curious in your practice, how often do you see people choosing doublet therapy as frontline? Dr. Kristen Ciombor: So patients are really savvy, and a lot of times they've heard this data before or have come across it in patient advocacy groups and other things, and it's really nice to be able to have that conversation of the risk versus benefit. So I will say not all of my patients choose doublet, and many of them are still cured with immunotherapy monotherapy. So the big question there is, will we ever understand who actually needs the doublet versus who can still be cured or have very good long-term outcomes with just the single agent? And that has not been answered yet. Dr. Shaalan Beg: What a great point. So the last abstract I was hoping we could talk about is POD1UM-303 or the INTERAACT2 subgroup analysis and impact of delayed retifanlimab treatment for patients with squamous cell carcinoma of the anal canal. What were your thoughts here? Dr. Kristen Ciombor: This was a study, actually we saw at ESMO, we saw the primary data at ESMO last year, and this was an update with some exploratory analyses. But this was really an important study because once again, we're looking at immunotherapy in later lines of therapy. That's how we started looking at and investigating immunotherapy, and now we're moving it up and up in the treatment course. So this was a study of carboplatin/paclitaxel plus or minus retifanlimab. Actually it was retifanlimab versus placebo. And it was a positive study, as we heard last year. This actually led to FDA approval of this regimen last month, just before ASCO, and it has now been incorporated in the NCCN guidelines as the preferred first-line option. So what I thought was important from the additional data presented at ASCO was looking at the different subgroups, it did not appear that patients with liver mets or not had different outcomes. So that was really good to see because sometimes in colon cancer we see that immunotherapy doesn't work as well when patients have liver mets. And interestingly, because we use immunotherapy in anal cancer without any biomarkers, unlike with colon cancer or some of the other tumor types, also the authors looked at PD-L1 status, and it did look like maybe patients did a little bit better if they had higher PD-L1 expression, but patients still could benefit even if they were PD-L1 negative. So that was important, I think, and we will continue to see further data come out from this study. I want to mention also that EA2176 just completed accrual, so that was carbo-taxol plus or minus nivolumab. And so we should be seeing that data sometime soon, which will hopefully also confirm the ongoing role for immunotherapy in the first-line setting for anal cancer. Dr. Shaalan Beg: That was a fantastic review. Thank you, Dr Ciombor. Thanks for sharing your valuable insights with us today on the ASCO Daily News Podcast. Dr. Kristen Ciombor: Thanks for having me here. Dr. Shaalan Beg: And thank you to our listeners for your time today. You will find links to the abstracts discussed today in the transcript of this episode. And if you value the insights that you hear on the podcast, please take a moment to rate, review, and subscribe, wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. More on today's speakers:  Dr. Shaalan Beg @ShaalanBeg  Dr. Kristen Ciombor @KristenCiombor Follow ASCO on social media:   @ASCO on Twitter  @ASCO on BlueSky ASCO on Facebook   ASCO on LinkedIn   Disclosures:  Dr. Shaalan Beg:  Consulting or Advisory Role: Ipsen, Cancer Commons, Foundation Medicine, Science37, Nant Health, Lindus Health Speakers' Bureau: Sirtex Research Funding (Inst.): Delfi Diagnostics, Universal Diagnostics, Freenome Dr. Kristen Ciombor: Consulting or Advisory Role: Pfizer, Incyte, Exelixis, Bayer, ALX Oncology, Tempus, Agenus, Taiho Oncology, Merck, BeiGene Research Funding (Inst.): Pfizer, Boston Biomedical, MedImmune, Onyx, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Merck, Novartis, Incyte, Amgen, Sanofi, Bristol-Myers Squibb, Array BioPharma, Incyte, Daiichi Sankyo, Nucana, Abbvie, Merck, Pfizer/Calthera, Genentech, Seagen, Syndax Travel, Accommodations, Expenses: Incyte, Tempus

WIN International Molecular Tumor Board Recommends Tailored Treatment for Advanced Colorectal Cancer

Play Episode Listen Later Jun 24, 2025 4:40

BUFFALO, NY – June 24, 2025 – A new precision #oncology paper was #published in Volume 16 of Oncotarget on June 17, 2025, titled “Case Report WIN-MTB-2023001 WIN International Molecular Tumor Board A 62-year-old male with metastatic colorectal cancer with 5 prior lines of treatment.” In this report, led by Alberto Hernando-Calvo from Vall d'Hebron University Hospital and Vall d'Hebron Institute of Oncology; Razelle Kurzrock from WIN Consortium and Medical College of Wisconsin; Oncotarget Editor-in-Chief Wafik S. El-Deiry from WIN Consortium and Legorreta Cancer Center at Brown University; and corresponding author Shai Magidi, also from WIN Consortium, along with colleagues, describe the case of a 62-year-old man with metastatic colorectal cancer who underwent multiple lines of therapy. After analysis, the WIN International Molecular Tumor Board proposed different personalized treatment plans based on the tumor's unique genetic mutations. This case highlights the growing role of precision oncology in guiding therapies for patients with treatment-resistant cancers. Colorectal cancer is one of the deadliest cancers worldwide, and managing advanced cases remains a significant challenge. This patient had already received five prior treatment regimens, including chemotherapy and targeted therapies. Although some treatments were initially beneficial, the cancer eventually developed resistance. Molecular analysis revealed key mutations in genes such as BRAF, MET, APC, TP53, and NRAS, which are often linked to aggressive tumor behavior and reduced treatment effectiveness. With limited standard options left, the patient's case was presented and reviewed by the WIN International Molecular Tumor Board, a global panel of cancer experts. The team analyzed the clinical history and genetic profile to design new treatment approaches. These involved off-label drug combinations tailored to the specific mutations found in the tumor. For example, one approach combined trametinib, a drug that blocks cancer cell growth signals, with amivantamab, an antibody that attacks cancer-related proteins MET and EGFR, and regorafenib, which helps cut off blood supply to tumors and may counteract effects from APC and TP53 mutations. “Another option was trametinib at 1 mg daily, cetuximab (EGFR antibody), 250 mg/m² IV every two-weeks, and cabozantinib (MET and VEGFR inhibitor), 40 mg po daily.” This case reflects a shift in cancer care from standardized protocols to precision approaches, where therapy is selected based on a tumor's molecular features. Such strategies aim to delay resistance and slow disease progression more effectively. The WIN International Molecular Tumor Board also discussed practical challenges, including access to medications, combining off-label drugs, and the difficulties of enrolling patients in clinical trials after multiple prior treatments. Although the ultimate treatment decision remained with the patient's physician, this report shows how international collaboration and precision oncology can expand options for patients facing limited alternatives. It also emphasizes the value of repeat genetic analysis during disease progression to monitor new mutations in the tumor that may impact treatment. While the patient ultimately died from cancer progression, this case serves as a model for how molecular analysis and expert input can be used to guide treatment even in complex and metastatic colorectal cancer. As personalized cancer strategies continue to evolve, they may offer potential pathways for patients who have exhausted standard treatment options. DOI - https://doi.org/10.18632/oncotarget.28744 Correspondence to - Shai Magidi - shai.magidi@winconsortium.org Video short - https://www.youtube.com/watch?v=uWDtWNgpK7A To learn more about Oncotarget, please visit https://www.oncotarget.com. MEDIA@IMPACTJOURNALS.COM

ASCO25 Recap: CHALLENGE, DESTINY-Breast09, and More

Research To Practice | Oncology Videos

Play Episode Listen Later Jun 19, 2025 25:45

Dr. John Sweetenham and Dr. Erika Hamilton highlight key abstracts that were presented at ASCO25, including advances in breast and pancreatic cancers as well as remarkable data from the use of structured exercise programs in cancer care. Transcript Dr. Sweetenham: Hello, and welcome to the ASCO Daily News Podcast. I'm your host, Dr. John Sweetenham. Today, we'll be discussing some of the key advances and novel approaches in cancer care that were presented at the 2025 ASCO Annual Meeting. I'm delighted to be joined again by the chair of the Meeting's Scientific Program, Dr. Erika Hamilton. She is a medical oncologist and director of breast cancer and gynecologic cancer research at the Sarah Cannon Research Institute in Nashville, Tennessee. Our full disclosures are available in the transcript of this episode. Dr. Hamilton, congratulations on a fantastic meeting. From the practice-changing science to the world-renowned speakers at this year's Meeting, ASCO25 really reflected the amazing progress we're seeing in oncology today and the enormous opportunities that lie ahead of us. And thanks for coming back on to the podcast today to discuss some of these advances. Dr. Hamilton: Thanks, Dr. Sweetenham. I'm happy to join you today. It really was an impactful ASCO Annual Meeting. I probably am biased, but some great research was presented this year, and I heard lots of great conversations happening while we were there. Dr. Sweetenham: Yeah, absolutely. There was a lot of buzz, as well as a lot of media buzz around the meeting this year, and I think that's probably a good place to start. So I'd like to dive into abstract number LBA3510. This was the CHALLENGE trial, which created a lot of buzz at the meeting and subsequently in the media. This is the study that was led by the NCI Canada Clinical Trials Group, which was the first randomized phase 3 trial in patients with stage III and high-risk stage II colon cancer, which demonstrated that a post-treatment structured exercise program is both feasible and effective in improving disease-free survival in this patient group. The study was performed over a long period of time and in many respects is quite remarkable. So, I wonder if you could give us your thoughts about this study and whether you think that this means that our futures are going to be full of structured exercise programs for those patients who may benefit. Dr. Hamilton: It's a fantastic question. I think that this abstract did create a lot of buzz. We were very excited when we read it. It was highlighted in one of the Clinical Science Symposium sessions. But briefly, this was a phase 3 randomized trial. It was conducted at 55 centers, so really a broad experience, and patients that had resected colon cancer who completed adjuvant therapy were allowed to participate. There were essentially 2 groups: a structured exercise program, called ‘the exercise group,' or health education materials alone, so that was called just ‘the health education group.' And this was a 3-year intervention, so very high quality. The primary end point, as you mentioned, was disease-free survival. This actually accrued from 2009 to 2024, so quite a lift, and almost 900 patients underwent randomization to the exercise group or the health education group. And at almost 8 years of follow-up, we saw that the disease-free survival was significantly longer in the exercise group than the health education group. This was essentially 80.3% of patients were disease-free in exercise and 73.9% in the health education group. So a difference of over 6 percentage points, which, you know, at least in the breast cancer world, we make decisions about whether to do chemotherapy or not based on these kind of data. We also looked at overall survival in the exercise group and health education group, and the 8-year overall survival was 90.3% in the exercise group and 83.2% in the health education group. So this was a difference of 7.1%. Still statistically significant. I think this was really a fantastic effort over more than a decade at over 50 institutions with almost 900 patients, really done in a very systematic, high-intervention way that showed a fantastic result. Absolutely generalizable for patients with colon cancer. We have hints in other cancers that this is beneficial, and frankly, for our patients for other comorbidities, such as cardiovascular, etc., I really think that this is an abstract that deserved the press that it received. Dr. Sweetenham: Yeah, absolutely, and it is going to be very interesting, I think, over the next 2 or 3 years to see how much impact this particular study might have on programs across the country and across the world actually, in terms of what they do in this kind of adjuvant setting for structured exercise. Dr. Hamilton: Absolutely. So let's move on to Abstract 3006. This was an NCI-led effort comparing genomic testing using ctDNA and tissue from patients with less common cancers who were enrolled in but not eligible for a treatment arm of the NCI-MATCH trial. Tell us about your takeaways from this study. Dr. Sweetenham: Yeah, so I thought this was a really interesting study based, as you said, on NCI-MATCH. And many of the listeners will probably remember that the original NCI-MATCH study screened almost 6,000 patients to assess eligibility for those who had an actionable mutation. And it turned out that about 60% of the patients who went on to the study had less common tumors, which were defined as anything other than colon, rectum, breast, non–small cell lung cancer, or prostate cancer. And most of those patients lacked an eligible mutation of interest and so didn't get onto a trial therapy. But with a great deal of foresight, the study group had actually collected plasma samples from these patients so that they would have the opportunity to look at circulating tumor DNA profiles with the potential being that this might be another way for testing for clinically relevant mutations in some of these less common cancer types. So initially, they tested more than 2,000 patients, and to make a somewhat complicated story short, there was a subset of five histologies with a larger representation in terms of sample size. And these were cholangiocarcinoma, small cell lung cancer, esophageal cancer, pancreatic, and salivary gland cancer. And in those particular tumors, when they compared the ctDNA sequencing with the original tumor, there was a concordance there of around 84%, 85%. And in the presentation, the investigators go on to list the specific mutated genes that were identified in each of those tumors. But I think that the other compelling part of this study from my perspective was not just that concordance, which suggests that there's an opportunity there for the use of ctDNA instead of tumor biopsies in some of these situations, but what was also interesting was the fact that there were several clinically relevant mutations which were detected only in the circulating tumor DNA. And a couple of examples of those included IDH1 for cholangiocarcinoma, BRAF and p53 in several histologies, and microsatellite instability was most prevalent in small cell lung cancer in the ctDNA. So I think that what this demonstrates is that liquid biopsy is certainly a viable screening option for patients who are being assessed for matching for targeted therapies in clinical trials. The fact that some of these mutations were only seen in the ctDNA and not in the primary tumor specimen certainly suggests that there's some tumor heterogeneity. But I think that for me, the most compelling part of this study was the fact that many of these mutations were only picked up in the plasma. And so, as the authors concluded, they believe that a comprehensive gene profiling with circulating tumor DNA probably should be included as a primary screening modality in future trials of targeted therapy of this type. Dr. Hamilton: Yeah, I think that that's really interesting and mirrors a lot of data that we've been seeing. At least in breast cancer, you know, we still do a biopsy up front to make sure that our markers, we're still treating the right disease that we think we are. But it really speaks to the utility of using ctDNA for serial monitoring and the emergence of mutations. Dr. Sweetenham: Absolutely. And you mentioned breast cancer, and so I'd like to dwell on that for a moment here because obviously, there was a huge amount of exciting breast cancer data presented at the meeting this year. And in particular, I'd like to ask you about LBA1008, the DESTINY-Breast09 clinical trial, which I think has the potential to establish a new first-line standard of care for metastatic HER2+ breast cancer. And that's an area where we haven't seen a whole lot of innovation for around a decade now. So can you give us some of the highlights of this trial and what your thinking is, having seen the results? Dr. Hamilton: Yeah, absolutely. So this was a trial in the first-line metastatic HER2 setting. So this was looking at trastuzumab deruxtecan. We certainly have had no shortage of reports around this drug, initially approved for later lines. DESTINY-Breast03 brought it into our second-line setting for HER2+ disease and we're now looking at DESTINY-Breast09 in first-line. So this actually was a 3-arm trial where patients were randomized 1:1:1 against standard taxane/trastuzumab/pertuzumab in one arm; trastuzumab deruxtecan with pertuzumab in another arm; and then a third arm, trastuzumab deruxtecan alone. And what we did not see reported was that trastuzumab deruxtecan-alone arm. But we did have reports from the trastuzumab deruxtecan plus pertuzumab versus the chemo/trastuzumab/pertuzumab. And what we saw was a statistically significant improvement in median progression-free survival, 26.9 months up to 40.7, so an improvement of 13.8 months, over a year in PFS. Not to mention that we're now in the 40-month range for PFS in first-line disease. Really, across all subgroups, we really weren't able to pick out a subset of patients that did not benefit. We did see about a 12% ILD rate with trastuzumab deruxtecan. That really is on par with what we've seen in other studies, around 10%-15%. I think that this is going to become a new standard of care in the first-line. I think it did leave some unanswered questions. We saw some data from the PATINA trial this past San Antonio Breast, looking at the addition of endocrine therapy with or without a CDK4/6 inhibitor, palbociclib, for those patients that also have ER+ disease, after taxane has dropped out in the first-line setting. So how we're going to kind of merge all this together is, I suspect that there are going to be patients that we or they just don't have the appetite to continue 3 to 4 years of trastuzumab deruxtecan. And so we're probably going to be looking at a maintenance-type strategy for them, maybe integrating the PATINA data there. But how we really put this into practice in the first-line setting and if or when we think about de-escalating down from trastuzumab deruxtecan to antibody therapy are some lingering questions. Dr. Sweetenham: Okay, so certainly is going to influence practice, but watch this space for a little bit longer, it sounds as though that's what you're saying. Dr. Hamilton: Absolutely. So let's move on to GI cancer. Abstract 4006 reported preliminary results from the randomized phase 2 study of elraglusib in combination with gemcitabine/nab-paclitaxel versus the chemo gemcitabine/nab-paclitaxel alone in patients with previously untreated metastatic pancreatic cancer. Can you tell us more about this study? Dr. Sweetenham: Yeah, absolutely. As you mentioned, elraglusib is actually a first-in-class inhibitor of GSK3-beta, which has multiple potential actions in pancreatic cancer. But the drug itself may be involved in mediating drug resistance as well as in some tumor immune response modulation. Some of that's not clearly understood, I believe, right now. But certainly, preclinical data suggests that the drug may be effective in preclinical models and may also be effective in combination with chemotherapy and potentially with immune-modulating agents as well. So this particular study, as you said, was an open-label, randomized phase 2 study in which patients with pancreatic cancer were randomized 2:1 in favor of the elraglusib plus GMP—gemcitabine and nab-paclitaxel—versus the chemotherapy alone. And upon completion of the study, which is not right now, median overall survival was the primary end point, but there are a number of other end points which I'll talk about in just a moment. But the sample size was planned to be around 207 patients. The primary analysis included 155 patients in the combination arm versus 78 patients in the gemcitabine/nab-paclitaxel arm. Overall, the 1-year overall survival rate was 44.1% for the patients in the elraglusib-containing arm versus 23.0% in the patients receiving gemcitabine/nab-paclitaxel only. When they look at the median overall survival, it was 9.3 months for the experimental arm versus 7.2 months for chemotherapy alone. So put another way, there's around a 37% reduction in the risk of death with the use of this combination arm. The treatment was overall well-tolerated. There were some issues with grade 1 to 2 transient visual impairment in a large proportion of the patients. The most common treatment-related adverse effects with the elraglusib/GMP combination was transient visual impairment, which affected around 60% of the patients. Most of the more serious treatment-related adverse events included neutropenia, anemia, and fatigue in 50%, 25%, and 16% of the patients, respectively. So the early results from this study show a significant benefit for 1-year overall survival and for median overall survival with, as I mentioned above, a significant reduction in the risk of death. The authors went on to mention that the median overall survival for the control arm in this study is somewhat lower than in other comparable trials, but they think that this may be related to a more advanced disease burden in this particular study. Of interest to me was that right now: there is no apparent difference in progression-free survival between the 2 arms of this study. The authors described this as potentially indicating that this may be related in some way to immune modulation and immune effects on the tumor, which, if I'm completely honest, I don't totally understand. And so, the improvement in overall survival, as far as I can see at the moment, is not matched by an improvement in progression-free survival. So I think we probably need to wait for more time to elapse to see what happens with the study. And so, I think it certainly is an interesting study, and the results are intriguing, but I think it's probably a little early for it to actually shift the treatment paradigm in this disease. Dr. Hamilton: Fantastic. I think we've been waiting for advances in pancreatic cancer for a long time, but this, not unlike others, we learn more and then learn more we don't realize, so. Dr. Sweetenham: Right. Let's shift gears at this point and talk about a couple of other abstracts in kind of a very different space. Let's start out with symptom management for older adults with cancer. We know that undertreated symptoms are common among the older patient population, and Abstract 11002 reported on a randomized trial that demonstrated the effects of remote monitoring for older patients with cancer in terms of kind of symptoms and so on. Can you tell us a little bit about this study and whether you think this approach will potentially improve care for older patients? Dr. Hamilton: Yeah, I really liked this abstract. It was conducted through the Veterans Affairs, and it was based in California, which I'm telling you that because it's going to have a little bit of an implication later on. But essentially, adults that were 75 years or older who were Medicare Advantage beneficiaries were eligible to participate. Forty-three clinics in Southern California and Arizona, and patients were randomized either into a control group of usual clinic care alone, or an intervention group, which was usual care plus a lay health worker-led proactive telephone-based weekly symptom assessment, and this was for 12 months using the validated Edmonton Symptom Assessment System. So, there was a planned enrollment of at least 200 patients in each group. They successfully met that. And this lay health worker reviewed assessments with a physician assistant, who conducted follow-up for symptoms that changed by 2 points from a prior assessment or were rated 4 or greater. So almost a triage system to figure out who needed to be reached out to and to kind of work on symptoms. What I thought was fantastic about this was it was very representative of where it enrolled. There were actually about 50% of patients enrolled here that were Hispanic or Latinos. So some of our underserved populations and really across a wide variety of tumor types. They found that the intervention group had 53% lower odds of emergency room use, 68% lower odds of hospital use than the control group. And when they translated this to actual total cost of care, this was a savings of about $12,000 U.S. per participant and 75% lower odds of a death in an acute care facility. So I thought this was really interesting for a variety of reasons. One, certainly health care utilization and cost, but even more so, I think any of our patients would want to prevent hospitalizations and ER visits. Normally, that's not a fantastic experience having to feel poorly enough that you're in the emergency room or the hospital. And really showing in kind of concrete metrics that we were able to decrease this with this intervention. In terms of sustainability and scalability, I think the question is really the workforce to do this. Obviously, you know, this is going to take dedicated employees to have the ability to reach out to these patients, etc., but I think in value-based care, there's definitely a possibility of having reimbursement and having the funds to institute a program like this. So, definitely thought-provoking, and I hope it leads to more interventions. Dr. Sweetenham: Yeah, we've seen, over several years now, many of these studies which have looked at remote symptom monitoring and so on in this patient population, and many of them do show benefits for that in kinds of end points, not the least in this study being hospitalization and emergency room avoidance. But I think the scalability and personnel issue is a huge one, and I do wonder at some level whether we may see some AI-based platforms coming along that could actually help with this and provide interactions with these patients outside of actual real people, or at least in combination with real people. Dr. Hamilton: Yeah, that's a fantastic point. So let's talk a little bit about clinical trials. So eligibility assessment for oncology clinical trials, or prescreening, really relies on manual review of unstructured clinical notes. It's time-consuming, it's prone to errors, and Abstract 1508 reported on the final analysis of a randomized trial that looked at the effect of human-AI teams prescreening for clinical trial eligibility versus human-only or AI-only prescreening. So give us more good news about AI. What did the study find? Dr. Sweetenham: Yeah, this is a really, a really interesting study. And of course, any of us who have ever been involved in clinical trials will know that accrual is always a problem. And I think most centers have attempted, and some quite successfully managed to develop prescreening programs so that patients are screened by a health care provider or health care worker prior to being seen in the clinic, and the clinical investigator will then already know whether they're going to be eligible for a trial or not. But as you've already said, it's a slow process. It's typically somewhat inefficient and requires a lot of time on the part of the health care workers to actually do this in a successful way. And so, this was a study from Emory University where they took three models of ways in which they could assess the accuracy of the prescreening of charts for patients who are going to be considered for clinical trials. One of these was essentially the regular way of having two research coordinators physically abstract the charts. The second one was an AI platform which would extract longitudinal EHR data. And then the third one was a combination of the two. So the AI would be augmented by the research coordinator or the other way around. As a gold standard, they had three independent oncology reviewers who went through all of these charts to provide what they regarded as being the benchmark for accuracy. In a way, it's not a surprise to me because I think that a number of other systems which have used this combination of human verification of AI-based tools, it actually ultimately concluded that the combination of the two in terms of chart accuracy was for the most part better than either one individually, either the research coordinator or the AI alone. So I'll give you just a few examples of where specifically that mattered. The human plus AI platform was more accurate in terms of tumor staging, in terms of identifying biomarker testing and biomarker results, as well as biomarker interpretation, and was also superior in terms of listing medications. There are one or two other areas where either the AI alone was somewhat more accurate, but the significant differences were very much in favor of a combination of human + AI screening of these patient charts. So, in full disclosure, this didn't save time, but what the authors reported was that there were definite efficiency gains, and presumably this would actually become even more improved once the research coordinators were somewhat more comfortable and at home with the AI tool. So, I thought it was an interesting way of trying to enhance clinical trial accrual up front by this combination of humans and technology, and I think it's going to be interesting to see if this gets adopted at other centers in the future. Dr. Hamilton: Yeah, I think it's really fascinating, all the different places that we can be using AI, and I love the takeaway that AI and humans together are better than either individually. Dr. Sweetenham: Absolutely. Thanks once again, Dr. Hamilton, for sharing your insights with us today and for all of the incredible work you did to build a robust program. And also, congratulations on what was, I think, a really remarkable ASCO this year, one of the most exciting for some time, I think. So thank you again for that. Dr. Hamilton: Thanks so much. It was really a pleasure to work on ASCO 2025 this year. Dr. Sweetenham: And thank you to our listeners for joining us today. You'll find links to all the abstracts we discussed today in the transcript of this episode. Be sure to catch up on all of our coverage from the Annual Meeting. You can catch up on my daily reports that were published each day of the Annual Meeting, featuring the key science and innovations presented. And we'll have wrap-up episodes publishing in June, covering the full spectrum of malignancies from ASCO25. If you value the insights you hear on the ASCO Daily News Podcast, please remember to rate, review, and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. More on today's speakers: Dr. John Sweetenham  Dr. Erika Hamilton @erikahamilton9 Follow ASCO on social media: @ASCO on Twitter ASCO on Bluesky ASCO on Facebook  ASCO on LinkedIn  Disclosures:    Dr. John Sweetenham:    No relationships to disclose Dr. Erika Hamilton: Consulting or Advisory Role (Inst): Pfizer, Genentech/Roche, Lilly, Daiichi Sankyo, Mersana, AstraZeneca, Novartis, Ellipses Pharma, Olema Pharmaceuticals, Stemline Therapeutics, Tubulis, Verascity Science, Theratechnologies, Accutar Biotechnology, Entos, Fosun Pharma, Gilead Sciences, Jazz Pharmaceuticals, Medical Pharma Services, Hosun Pharma, Zentalis Pharmaceuticals, Jefferies, Tempus Labs, Arvinas, Circle Pharma, Janssen, Johnson and Johnson Research Funding (Inst): AstraZeneca, Hutchison MediPharma, OncoMed, MedImmune, Stem CentRx, Genentech/Roche, Curis, Verastem, Zymeworks, Syndax, Lycera, Rgenix, Novartis, Millenium, TapImmune, Inc., Lilly, Pfizer, Lilly, Pfizer, Tesaro, Boehringer Ingelheim, H3 Biomedicine, Radius Health, Acerta Pharma, Macrogenics, Abbvie, Immunomedics, Fujifilm, eFFECTOR Therapeutics, Merus, Nucana, Regeneron, Leap Therapeutics, Taiho Pharmaceuticals, EMD Serono, Daiichi Sankyo, ArQule, Syros Pharmaceuticals, Clovis Oncology, CytomX Therapeutics, InventisBio, Deciphera, Sermonix Pharmaceuticals, Zenith Epigentics, Arvinas, Harpoon, Black Diamond, Orinove, Molecular Templates, Seattle Genetics, Compugen, GI Therapeutics, Karyopharm Therapeutics, Dana-Farber Cancer Hospital, Shattuck Labs, PharmaMar, Olema Pharmaceuticals, Immunogen, Plexxikon, Amgen, Akesobio Australia, ADC Therapeutics, AtlasMedx, Aravive, Ellipses Pharma, Incyte, MabSpace Biosciences, ORIC Pharmaceuticals, Pieris Pharmaceuticals, Pieris Pharmaceuticals, Pionyr, Repetoire Immune Medicines, Treadwell Therapeutics, Accutar Biotech, Artios, Bliss Biopharmaceutical, Cascadian Therapeutics, Dantari, Duality Biologics, Elucida Oncology, Infinity Pharmaceuticals, Relay Therapeutics, Tolmar, Torque, BeiGene, Context Therapeutics, K-Group Beta, Kind Pharmaceuticals, Loxo Oncology, Oncothyreon, Orum Therapeutics, Prelude Therapeutics, Profound Bio, Cullinan Oncology, Bristol-Myers Squib, Eisai, Fochon Pharmaceuticals, Gilead Sciences, Inspirna, Myriad Genetics, Silverback Therapeutics, Stemline Therapeutics

california ai arizona dna er tennessee nashville hamilton southern california pfizer hispanic breast cancer gi forty latinos astrazeneca emory university abstract oncology veterans affairs annual meetings janssen novartis cancer care millenium medicare advantage ehr asco torque amgen jefferies black diamond fujifilm abbvie gmp patina regeneron harpoon her2 boehringer ingelheim pfs gilead sciences nci braf ild curis eisai asco annual meeting daiichi sankyo jazz pharmaceuticals ctdna cdk4 myriad genetics incyte emd serono idh1 medimmune artios seattle genetics pharmamar erika hamilton arvinas compugen tesaro transcript dr inspirna gsk3 acerta pharma arqule sermonix pharmaceuticals syros pharmaceuticals effector therapeutics hamilton it

Non-Small Cell Lung Cancer and Therapeutic Targets Beyond EGFR — Year in Review Series on Relevant New Datasets and Advances

Play Episode Listen Later Jun 10, 2025 58:22

Featuring perspectives from Dr Jessica J Lin and Dr Joel W Neal, including the following topics: Introduction: Actionable Genomic Alterations (0:00) ALK (9:49) ROS1 (22:22) HER2 (31:00) RET (38:52) NTRK (45:30) MET (46:31) Novel Targeted Strategies (49:09) BRAF (54:19) KRAS G12C (55:38) CME information and select publications

relevant targets advances therapeutic ret cme her2 egfr alk datasets braf small cell lung cancer ros1

Non-Small Cell Lung Cancer | Joel W Neal, MD, PhD

Research To Practice | Oncology Videos

Play Episode Listen Later Jun 8, 2025 30:11

Year in Review: Clinical Investigator Perspectives on the Most Relevant New Datasets and Advances in Therapeutic Targets Beyond EGFR for Non-Small Cell Lung Cancer | Faculty Presentation 2: Therapeutic Approaches Targeting HER2, MET, BRAF and KRAS G12C — Joel W Neal, MD, PhD CME information and select publications

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JCO PO Article Insights: TMB and Real-World ICI Outcomes in Melanoma

JCO Precision Oncology Conversations

Play Episode Listen Later May 28, 2025 8:11

In this JCO Precision Oncology Article Insights episode, Jiasen He summarizes "Predictive Impact of Tumor Mutational Burden on Real-World Outcomes of First-Line Immune Checkpoint Inhibition in Metastatic Melanoma” by Dr. Miles C. Andrews, et al. published on June 07, 2024. Transcript The guest on this podcast episode has no disclosures to declare. Jiasen He: Hello and welcome to the JCO Precision Oncology Article Insights. I'm your host, Jiasen, and today we'll be discussing the JCO Precision Oncology article, "Predictive Impact of Tumor Mutational Burden on Real-World Outcomes of First-Line Immune Checkpoint Inhibition in Metastatic Melanoma," by Dr. Miles C. Andrews and colleagues. This study was supported by Foundation Medicine, a for-profit company that conducts FDA-regulated molecular diagnostics, including assays used to measure tumor mutational burdens, or TMB, as described in this article. Immune checkpoint inhibitor (ICI) therapy has become a cornerstone in the treatment of metastatic melanoma. They work by activating the patient's own immune system, representing a fundamentally different approach from traditional chemotherapy. Several biomarkers have emerged as promising tools to predict ICI therapy response, and TMB is one of the most extensively studied. TMB is defined as the number of somatic mutations per megabase of an interrogated genome sequence. In the KEYNOTE-158 study, patients with high TMB showed better response rates and longer progression-free survival compared to those with low TMB, which led to the FDA tumor-agnostic approval of TMB as a biomarker to guide ICI therapy. In this manuscript, Dr. Andrews and colleagues set out to answer an important question: does TMB predict outcomes of ICI therapy in real-world patients with advanced melanoma? To explore this, they analyzed de-identified data from the nationwide Flatiron Health-Foundation Medicine Clinico-Genomic Database (CGDB). To be included, patients needed to have had at least two visits to a Flatiron Health clinic and a Foundation Medicine Comprehensive Genomic Profiling report. Eligible patients had received first-line treatment with either monotherapy (nivolumab or pembrolizumab) or dual therapy with the combination of ipilimumab and nivolumab for metastatic melanoma. They also needed a tissue-based TMB score from either the FoundationOne or FoundationOne CDx genomic test. For this study, TMB less than 10 mutations per megabase was considered low TMB; TMB equal to or more than 10 mutations per megabase was considered high TMB; and TMB equal to or more than 20 mutations per megabase was considered very high TMB. Of the 497 patients in the final cohort, 29% had low TMB, while 71% had high TMB, and 50% had very high TMB. The authors observed that patients with very high TMB were more often male, had BRAF wild-type tumors, and were more likely to receive anti-PD-1 monotherapy. This group also had tumors more commonly sampled from brain and lung metastases. Patients with high TMB but not very high TMB were more likely to carry the BRAF V600K mutation and were least likely to have lung metastases. Meanwhile, those with low TMB tended to be younger and had disease limited to non-visceral sites. As expected, the presence of ultraviolet mutation signatures, a known driver of melanoma, was strongly associated with TMB. UV signatures were found in just 18% of the low TMB group, but in 89% of the high TMB and 93% of the very high TMB group. High TMB was found to be prognostic of improved real-world progression-free survival (PFS) and overall survival (OS) in patients receiving both monotherapy and dual immune checkpoint inhibitors, even after adjusting for other established prognostic factors. Interestingly, in the low TMB group, overall survival was likely confounded by the availability of effective second-line targeted therapy, particularly for BRAF-mutant patients. These patients had better outcomes compared to their BRAF wild-type counterparts, likely reflecting a greater reliance on salvage therapy in low TMB patients who derived less benefit from first-line immunotherapy. The authors then further examined the ICI outcomes using stepwise TMB thresholds, with TMB less than 10 as low, 10 to 19 as high, and equal to or more than 20 as very high. For those receiving ICI monotherapy, both PFS and OS were highest in the very high TMB group, followed by the high TMB group, and lowest in the low TMB group. However, in patients treated with dual ICI therapy, the results diverged. While low TMB patients still had the poorest outcomes, those with high TMB (mutations 10 to 19 per megabase) had better PFS and overall survival than those with very high TMB (mutations equal to or more than 20 per megabase). The authors then conducted exploratory multivariable modeling, showing that among very high TMB patients with BRAF mutations, dual ICI therapy was associated with a significantly higher hazard ratio compared to monotherapy. They concluded that dual ICI may not benefit, and could even harm, patients with very high TMB, whereas those with TMB between 10 and 20 mutations per megabase may get more from the intensified regimen. Importantly, as the authors stated in the manuscript, we need to note that in this cohort, very high TMB patients were more likely to have brain metastases at treatment initiation, be male, and lack BRAF V600E/K mutations—all factors associated with poorer prognosis. This might partially explain inferior outcomes to dual ICI in very high TMB patients, as patients were not randomly assigned to therapy in this retrospective, real-world study. As such, these findings should be interpreted with caution and validated in future studies. In summary, this study showed that in a real-world setting, high tumor mutational burden predicts better outcomes with immune checkpoint inhibitor therapy in patients with advanced melanoma. Interestingly, the authors found that dual ICI therapy may offer no added benefit for patients with very high TMB compared to ICI monotherapy. However, this was a retrospective, non-randomized study, and the cohorts were imbalanced for some known risk factors, which could confound outcomes. As a result, these findings should be interpreted with caution and will need to be validated in future prospective studies. Thank you for tuning into JCO Precision Oncology Article Insights. Don't forget to subscribe and join us next time as we explore more groundbreaking research shaping the future of oncology. Until then, stay informed and stay inspired. The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement.

patients os fda real world outcomes andrews keynote pd uv immune ici eligible melanoma asco pfs tmb braf flatiron health foundation medicine

Caroline Robert on treatments for patients with advanced melanoma with BRAFV600E or BRAFV600K mutations (EBIN trial)

The Lancet Oncology

Play Episode Listen Later May 28, 2025 10:45

Smriti Patodia, Senior Editor of The Lancet Oncology, is joined by Professor Caroline Robert from Gustave Roussy Cancer Campus, France to discuss the EBIN trial. EBIN was an open-label, randomised, controlled, phase 2 trial conducted at 37 centres in eight European countries, and aimed to investigate the use of a targeted-therapy induction regimen before treatment with immune checkpoint inhibitors in patients with metastatic melanoma with BRAFV600E or BRAFV600K mutations. They discuss the disease burden of advanced melanoma with BRAF mutations, the key findings from the EBIN trial, and the future implications of the study findings, especially for a select sub-population of patients with advanced melanoma.Read the full article:https://www.thelancet.com/journals/lanonc/article/PIIS1470-2045(25)00133-0/fulltext?dgcid=buzzsprout_icw_podcast_May_25_lanoncTell us what you thought about this episodeContinue this conversation on social!Follow us today at...https://thelancet.bsky.social/https://instagram.com/thelancetgrouphttps://facebook.com/thelancetmedicaljournalhttps://linkedIn.com/company/the-lancethttps://youtube.com/thelancettv

france european trial patients treatments senior editor mutation melanoma braf piis1470

Revolutionary Cancer Breakthroughs: From Digital Twins to Personalized Vaccines and Precision Targeting

Ask Doctor Dawn

Play Episode Listen Later May 24, 2025 56:02

Broadcast from KSQD, Santa Cruz on 5-22-2025: Dr. Dawn explores groundbreaking cancer research using high-throughput "digital twin" analysis to reverse colon cancer cells back to normal states, identifying three master molecular switches that can induce normal cell differentiation without killing the cancer cells, thus avoiding traditional chemotherapy side effects. She discusses remarkable results from Memorial Sloan Kettering showing 80% of patients with mismatch repair deficient tumors, including all 49 rectal cancer patients, saw complete tumor disappearance after six months of dostarlimab immunotherapy, with no recurrence at five years and minimal side effects. The program covers innovative CRISPR applications, including targeting previously "undruggable" cancer mutations like KRAS and BRAF by selectively degrading mutant RNA messages while preserving healthy genes, offering unprecedented precision in cancer treatment. Dr. Dawn explains a clever immunotherapy approach that disguises tumors as pig organs using Newcastle disease virus carrying alpha-gal enzyme, tricking the immune system into mounting fierce attacks against cancer cells, showing promising results in both monkey and human trials. She describes fascinating research using cryoshocked tumor cells as Trojan horses, where liquid nitrogen-treated cancer cells carrying CRISPR gene editing tools directly seek out tumors, offering superior targeting compared to injecting CRISPR. The show reveals how cancers create protective acid walls around themselves to repel immune cells, with individual cancer cells pumping lactic acid away from the tumor center to form pH 5.3 barriers that kill attacking CD8 T cells within hours. Dr. Dawn discusses breakthrough mRNA cancer vaccines for glioblastoma using patients' own tumor cells, showing rapid immune system activation within 48 hours and extending survival in both dogs and humans with this aggressive brain cancer. She explores the "flower code" mechanism where cancer cells gaslight healthy cells through epigenetic manipulation, expressing dominant "flower win" codes to overpower normal cells expressing "flower lose" codes in biological turf wars. The program addresses systemic problems in cancer classification, explaining how organ-based categorization delays access to effective treatments, with patients waiting years for drugs that could help based on molecular profiles rather than tumor location. Dr. Dawn concludes by highlighting medical discrimination against people with Duffy null phenotype, primarily affecting African Americans, whose naturally lower neutrophil counts lead to reduced chemotherapy doses and excluded clinical trial participation despite no increased infection risk.

Revolutionary Cancer Breakthroughs: From Digital Twins to Personalized Vaccines and Precision Targeting

Ask Doctor Dawn

Play Episode Listen Later May 24, 2025 56:02

Effectiveness and Cost-Effectiveness of Gene Panels in Melanoma

JCO Precision Oncology Conversations

Play Episode Listen Later May 21, 2025 32:53

JCO PO author Dr. Dean A. Regier at the Academy of Translational Medicine, University of British Columbia (UBC), and the School of Population and Public Health, BC Cancer Research Institute shares insights into his JCO PO article, “Clinical Effectiveness and Cost-Effectiveness of Multigene Panel Sequencing in Advanced Melanoma: A Population-Level Real-World Target Trial Emulation.” Host Dr. Rafeh Naqash and Dr. Regier discuss the real-world clinical effectiveness and cost-effectiveness of multigene panels compared with single-gene BRAF testing to guide therapeutic decisions in advanced melanoma. Transcript Dr. Rafeh Naqash:Hello and welcome to JCO Precision Oncology Conversations, where we bring you engaging conversations with authors of clinically relevant and highly significant JCO PO articles. I'm your host, Dr. Rafeh Naqash, Podcast Editor for JCO Precision Oncology and Assistant Professor at the OU Health Stephenson Cancer Center in the University of Oklahoma. Today, we are excited to be joined by Dr. Dean A. Regier, Director at the Academy of Translational Medicine, Associate Professor at the School of Population and Public Health, UBC Senior Scientist at the British Columbia Cancer Research Institute, and also the senior author of the JCO Precision Oncology article entitled "Clinical Effectiveness and Cost-Effectiveness of Multigene Panel Sequencing in Advanced Melanoma: A Population-Level Real-World Target Trial Emulation." At the time of this recording, our guest's disclosures will be linked in the transcript. Dean, welcome to our podcast and thank you for joining us today. Dr. Dean Regier:Thank you. I'm delighted to be here. Dr. Rafeh Naqash:So, obviously, you are from Canada, and medicine, or approvals of drugs to some extent, and in fact approvals of gene testing to some extent is slightly different, which we'll come to learn about more today, compared to what we do in the US—and in fact, similarly, Europe versus North America to a large extent as well. Most of the time, we end up talking about gene testing in lung cancer. There is a lot of data, a lot of papers around single-gene panel testing in non-small cell lung cancer versus multigene testing. In fact, a couple of those papers have been published in JCO PO, and it has shown significant cost-effectiveness and benefit and outcomes benefit in terms of multigene testing. So this is slightly, you know, on a similar approach, but in a different tumor type. So, could you tell us first why you wanted to investigate this question? What was the background to investigating this question? And given your expertise in health economics and policy, what are some of the aspects that one tends or should tend to understand in terms of cost-effectiveness before we go into the results for this very interesting manuscript? Dr. Dean Regier:Yeah, of course, delighted to. So, one of the reasons why we're deeply interested in looking at comparative outcomes with respect to single- versus multigene testing— whether that's in a public payer system like Canada or an insurer system, a private system in the United States— is that the question around does multigene versus single-gene testing work, has not typically tested in randomized controlled trials. You don't have people randomized to multigene versus single-gene testing. And what that does, it makes the resulting evidence base, whether it's efficacy, safety, or comparative cost-effectiveness, highly uncertain. So, the consequence of that has been uneven uptake around the world of next-generation sequencing panels. And so if we believe that next-gen sequencing panels are indeed effective for our patients, we really need to generate that comparative evidence around effectiveness and cost-effectiveness. So we can go to payers, whether it be single payer or a private insurer, to say, "Here are the comparative outcomes." And when I say that uptake has been uneven, uptake there's been actually plenty, as you know, publications around that uneven uptake, whether it be in Europe, in the United States, in Canada. And so we're really interested in trying to produce that evidence to create the type of deliberations that are needed to have these types of technologies accessible to patients. And part of those deliberations, of course, is the clinical, but also in some contexts, cost-effectiveness. And so, we really start from the perspective of, can we use our healthcare system data, our learning healthcare system, to generate that evidence in a way that emulates a randomized controlled trial? We won't be able to do these randomized controlled trials for various, like really important and and reasons that make sense, quite frankly. So how can we mimic or emulate randomized controlled trials in a way that allows us to make inference around those outcomes? And for my research lab, we usually think through how do we do causal inference to address some of those biases that are inherent in observational data. So in terms of advanced melanoma, we were really interested in this question because first of all, there have been no randomized controlled trials around next-gen sequencing versus single-gene testing. And secondly, these products, these ICIs, immune checkpoint inhibitors, and BRAF and MEK inhibitors, they are quite expensive. And so the question really becomes: are they effective? And if so, to what extent are they cost-effective? Do they provide a good reason to have information around value for money? Dr. Rafeh Naqash:So now going to the biology of melanoma, so we know that BRAF is one of the tumor-agnostic therapies, it has approvals for melanoma as well as several other tumor types. And in fact, I do trials with different RAF-RAS kinase inhibitors. Now, one of the things that I do know is, and I'm sure some of the listeners know, is the DREAMseq trial, which was a melanoma study that was an NCI Cooperative Group trial that was led by Dr. Mike Atkins from Georgetown a couple of years back, that did show survival benefit of first-line immunotherapy sequencing. It was a sequencing study of whether to do first-line BRAF in BRAF-mutant melanoma followed by checkpoint inhibitors, or vice versa. And the immune checkpoint inhibitors followed by BRAF was actually the one that showed benefit, and the trial had to stop early, was stopped early because of the significant benefit seen. So in that context, before we approach the question of single-gene versus multigene testing in melanoma, one would imagine that it's already established that upfront nivolumab plus ipilimumab, for that matter, doublet checkpoint inhibitor therapy is better for BRAF-mutant melanoma. And then there's no significant other approvals for melanoma for NRAS or KIT, you know, mucosal melanomas tend to have KIT mutations, for example, or uveal melanomas, for that matter, have GNAQ, and there's no targeted therapies. So, what is the actual need of doing a broader testing versus just testing for BRAF? So just trying to understand when you started looking into this question, I'm sure you kind of thought about some of these concepts before you delved into that. Dr. Dean Regier:I think that is an excellent question, and it is a question that we asked ourselves: did we really expect any differences in outcomes between the testing strategies? And what did the real-world implementation, physician-guided, physician-led implementation look like? And so, that was kind of one of the other reasons that we really were interested is, why would we go to expanded multigene panel sequencing at all? We didn't really expect or I didn't expect an overall survival a priori. But what we saw in our healthcare system, what happened in our healthcare system was the implementation in 2016 of this multigene panel. And this panel covered advanced melanoma, and this panel cost quite a bit more than what they were doing in terms of the single-gene BRAF testing. And so when you're a healthcare system, you have to ask yourself those questions of what is the additional value associated with that? And indeed, I think in a healthcare system, we have to be really aware that we do not actually follow to the ideal extent randomized controlled trials or trial settings. And so that's the other thing that we have to keep in mind is when these, whether it's an ICI or a BRAF MEK inhibitor, when these are implemented, they do not look like randomized controlled trials. And so, we really wanted to emulate not just a randomized controlled trial, but a pragmatic randomized controlled trial to really answer those real-world questions around implementation that are so important to decision making. Dr. Rafeh Naqash:Sure. And just to understand this a little better: for us in the United States, when we talk about multigene testing, we generally refer to, these days, whole-exome sequencing with whole-transcriptome sequencing, which is like the nuclear option of of the testings, which is not necessarily cheap. So, when you talk about multigene testing in your healthcare system, what does that look like? Is it a 16-gene panel? Is it a 52-gene panel? What is the actual makeup of that platform? Dr. Dean Regier:Excellent question. Yeah, so at the time that this study is looking at, it was 2016, when we, as BC Cancer—so British Columbia is a population right now of 5.7 million people, and we have data on all those individuals. We are one healthcare system providing health care to 5.7 million people. In 2016, we had what I call our "home-brew" multigene panel, which was a 53-gene panel that was reimbursed as standard of care across advanced cancers, one of them being advanced melanoma. We have evolved since then. I believe in 2022, we are using one of the Illumina panels, the Focus panel. And so things have changed; it's an evolving landscape. But we're specifically focused on the 53-gene panel. It was called OncoPanel. And that was produced in British Columbia through the Genome Sciences Centre, and it was validated in a single-arm trial mostly around validity, etc. Dr. Rafeh Naqash:Thank you for explaining that. So now, onto the actual meat and the science of this project. So, what are some of the metrics from a health economy standpoint that you did look at? And then, methodology-wise, I understand, in the United States, we have a fragmented healthcare system. I have data only from my institution, for that matter. So we have to reach out to outside collaborators and email them to get the data. And that is different for you where you have access to all the data under one umbrella. So could you speak to that a little bit and how that's an advantage for this kind of research especially? Dr. Dean Regier:Yeah. In health economics, we look at the comparative incremental costs against the incremental effectiveness. And when we think about incremental costs, we think not just about systemic therapy or whether you see a physician, but also about hospitalizations, about all the healthcare interactions related to oncology or not that a patient might experience during their time or interactions with the healthcare system. You can imagine with oncology, there are multiple interactions over a prolonged time period depending on survival. And so what we try to do is we try to—and the benefit of the single-payer healthcare system is what we do is we link all those resource utilization patterns that each patient encounters, and we know the price of that encounter. And we compare those incremental costs of, in this case, it's the multigene panel versus the single-gene panel. So it's not just the cost of the panel, not just the cost of systemic therapy, but hospitalizations, physician encounters, etc. And then similarly, we look at, in this case, we looked at overall survival - we can also look at progression-free survival - and ask the simple question, you know, what is the incremental cost per life-year gained? And in that way, we get a metric or an understanding of value for money. And how we evaluate that within a deliberative priority setting context is we look at safety and efficacy first. So a regulatory package that you might get from, in our case, Health Canada or the FDA, so we look at that package, and we deliberate on, okay, is it safe and is it effective? How many patients are affected, etc. And then separately, what is the cost-effectiveness? And at what price, if it's not cost-effective, at what price would it be cost-effective? Okay, so for example, we have this metric called the incremental cost-effectiveness ratio, which is incremental cost in the numerator, and in this case, life-years gained in the denominator. And if it is around $50,000 or $100,000 per life-year gained—so if it's in that range, this ratio—then we might say it's cost-effective. If it's above this range, which is common in oncology, especially when we talk about ICIs, etc., then you might want to negotiate a price. And indeed, when we negotiate that price, we use the economic evaluation, that incremental cost-effectiveness ratio, as a way to understand at what price should we negotiate to in order to get value for money for the healthcare system. Dr. Rafeh Naqash:Thank you for explaining those very interesting terminologies. Now, one question I have in the context of what you just mentioned is, you know, like the drug development space, you talked about efficacy and safety, but then on the safety side, we talk about all-grade adverse events or treatment-related adverse events—two different terminologies. From a healthcare utilization perspective, how do you untangle if a patient on a BRAF therapy got admitted for a hypoxic respiratory failure due to COPD, resulting in a hospitalization from the cost, overall cost utilization, or does it not matter? Dr. Dean Regier:We try to do as much digging into those questions as possible. And so, this is real-world data, right? Real-world data is not exactly as clean as you'd get from a well-conducted clinical trial. And so what we do is we look at potential adverse event, whether it's hospitalization, and the types of therapies around that hospitalization to try- and then engage with clinicians to try to understand or tease out the different grades of the adverse event. Whether it's successful or not, I think that is a real question that we grapple with in terms of are we accurate in delineating different levels of adverse events? But we try to take the data around the event to try to understand the context in which it happens. Dr. Rafeh Naqash:Thank you for explaining that, Dean. So, again to the results of this manuscript, could you go into the methodology briefly? Believe you had 147 patients, 147 patients in one arm, 147 in the other. How did you split that cohort, and what were some of the characteristics of this cohort? Dr. Dean Regier:So, the idea, of course, is that we have selection criteria, study inclusion criteria, which included in our case 364 patients. And these were patients who had advanced melanoma within our study time period. So that was 2016 to 2018. And we had one additional year follow. So we had three total years. And what we did is that we linked our data, our healthcare system data. During this time, because the policy change was in 2016, we had patients both go on the multigene panel and on the single-gene BRAF testing. So, the idea was to emulate a pragmatic randomized controlled trial where we looked at contemporaneous patients who had multigene panel testing versus single-gene BRAF testing. And then we did a matching procedure—we call it genetic matching. And that is a type of matching that allows us to balance covariates across the patient groups, across the multigene versus BRAF testing cohorts. The idea again is, as you get in a randomized controlled trial, you have these baseline characteristics that look the same. And then the hope is that you address any source selection or confounding biases that prohibit you to have a clean answer to the question: Is it effective or cost-effective? So you address all those biases that may prohibit you to find a signal if indeed a signal is there. And so, what we did is we created—we did this genetic matching to balance covariates across the two cohorts, and we matched them one-to-one. And so what we were able to do is we were able to find, of those 364 patients in our pool, 147 in the multigene versus 147 in the single-gene BRAF testing that were very, very similar. In fact, we created what's called a directed acyclic graph or a DAG, together with clinicians to say, “Hey, what biases would you expect to have in these two cohorts that might limit our ability to find a signal of effectiveness?” And so we worked with clinicians, with health economists, with epidemiologists to really understand those different biases at play. And the genetic matching was able to match the cohorts on the covariates of interest. Dr. Rafeh Naqash:And then could you speak on some of the highlights from the results? I know you did survival analysis, cost-effectiveness, could you explain that in terms of what you found? Dr. Dean Regier:We did two analyses. The intention-to-treat analysis is meant to emulate the pragmatic randomized controlled trial. And what that does is it answers the question, for all those eligible for multigene or single-gene testing: What is the cost-effectiveness in terms of incremental life-years gained and incremental cost per life-years gained? And the second one was around a protocol analysis, which really answered the question of: For those patients who were actually treated, what was the incremental effectiveness and cost-effectiveness? Now, they're different in two very important ways. For the intention-to-treat, it's around population questions. If we gave single-gene or multigene to the entire population of advanced melanoma patients, what is the cost-effectiveness? The per-protocol is really around that clinical question of those who actually received treatment, what was the incremental cost and effectiveness? So very different questions in terms of population versus clinical cost and effectiveness. So, for the intention-to-treat, what we found is that in terms of life-years gained is around 0.22, which is around 2.5 months of additional life that is afforded to patients who went through the multigene panel testing versus the single-gene testing. That was non-statistically significant from zero at the 5% level. But on average, you would expect this additional 2.5 months of life. The incremental costs were again non-statistically significant, but they're around $20,000. And so when we look at incremental cost-effectiveness, we can also look at the uncertainty around that question, meaning what percentage of incremental cost-effectiveness estimates are likely to be cost-effective at different willingness-to-pay thresholds? Okay? So if you are willing to pay $100,000 to get one gain of life-years, around 52.8% of our estimates, in terms of when we looked at the entire uncertainty, would be cost-effective. So actually that meets the threshold of implementation in our healthcare system. So it's quite uncertain, just over 50%. But what we see is that decision-makers actually have a high tolerance for uncertainty around cost-effectiveness. And so, while it is uncertain, we would say that, well, the cost-effectiveness is finely balanced. Now, when we looked at the population, the per-protocol population, those folks who just got treatment, we actually have a different story. We have all of a sudden around 4.5 or just under 5 months of life gained that is statistically significantly different from zero, meaning that this is a strong signal of benefit in terms of life-years gained. In terms of the changes in costs or the incremental costs, they are larger again, but statistically insignificant. So the question now is, to what extent is it cost-effective? What is the probability of it being cost-effective? And at the $100,000 per life-year gained willingness-to-pay, there was a 73% chance that multigene panel testing versus single-gene testing is cost-effective. Dr. Rafeh Naqash:So one of the questions I have here, this is a clarification both for myself and maybe the listeners also. So protocol treatment is basically if you had gene testing and you have a BRAF in the multigene panel, then the patient went on a BRAF treatment. Is that correct? Dr. Dean Regier:It's still physician choice. And I think that's important to say that. So typically what we saw in both in our pre- and post-matching data is that we saw around 50% of patients, irrespective of BRAF status, get an ICI, which is appropriate, right? And so the idea here is that you get physician-guided care, but if the patient no longer performs on the ICI, then it gives them a little bit more information on what to do next. Even during that time when we thought it wasn't going to be common to do an ICI, but it was actually quite common. Dr. Rafeh Naqash:Now, did you have any patients in this study who had the multigene testing done and had an NRAS or a KIT mutation and then went on to those therapies, which were not captured obviously in the single-gene testing, which would have just tried to look at BRAF? Dr. Dean Regier:So I did look at the data this morning because I thought that might come up in terms of my own questions that I had. I couldn't find it, but what we did see is that some patients went on to clinical trials. So, meaning that this multigene panel testing allowed, as you would hope in a learning healthcare system, patients to move on to clinical trials to have a better chance at more appropriate care if a target therapy was available. Dr. Rafeh Naqash:And the other question in that context, which is not necessarily related to the gene platform, but more on the variant allele frequency, so if you had a multigene panel that captured something that was present at a high VAF, with suspicion that this could be germline, did you have any of those patients? I'm guessing if you did, probably very low number, but I'm just thinking from a cost-effective standpoint, if you identify somebody with germline, their, you know, first-degree relative gets tested, that ends up, you know, prevention, etc. rather than somebody actually developing cancer subsequently. That's a lot of financial gains to the system if you capture something early. So did you look at that or maybe you're planning to look at that? Dr. Dean Regier:We did not look at that, but that is a really important question that typically goes unanswered in economic evaluations. And so, the short answer is yes, that result, if there was a germline finding, would be returned to the patient, and then the family would be able to be eligible for screening in the appropriate context. What we have found in economic evaluations, and we've recently published this research, is that that scope of analysis is rarely incorporated into the economic evaluation. So those downstream costs and those downstream benefits are ignored. And when you- especially also when you think about things like secondary or incidental findings, right? So it could be a germline finding for cancer, but what about all those other findings that we might have if you go with an exome or if you go with a genome, which by the way, we do have in British Columbia—we do whole-genome and transcriptome sequencing through something called the Personalized OncoGenomics program. That scope of evaluation, because it's very hard to get the right types of data, because it requires a decision model over the lifetime of both the patients and potentially their family, it becomes very complicated or complex to model over patients' and families' lifetime. That doesn't mean that we should not do it, however. Dr. Rafeh Naqash:So, in summary Dean, could you summarize some of the known and unknowns of what you learned and what you're planning in subsequent steps to this project? Dr. Dean Regier:Our North Star, if you will, is to really understand the entire system effect of next-generation sequencing panels, exome sequencing, whole genomes, or whole genomes and transcriptome analysis, which we think should be the future of precision oncology. The next steps in our research is to provide a nice base around multigene panels in terms of multigene versus single-gene testing, whether that be colorectal cancer, lung cancer, melanoma, etc., and to map out the entire system implications of implementing next-generation sequencing panels. And then we want to answer the questions around, “Well, what if we do exomes for all patients? What if we do whole genomes and transcriptomes for all patients? What are the comparative outcomes for a true tumor-agnostic precision oncology approach, accounting for, as you say, things like return of results with respect to hereditary cancers?” I think the challenge that's going to be encountered is really around the persistent high costs of something like a whole-genome and transcriptome sequencing approach. Although we do see the technology prices going down—the "$1,000 genome" or “$6,000 genome" on whatever Illumina machine you might have—that bioinformatics is continuing to be expensive. And so, there are pipelines that are automated, of course, and you can create a targeted gene report really rapidly within a reasonable turnaround time. But of course, for secondary or what I call level two analysis, that bioinformatics is going to continue to be expensive. And so, we're just continually asking that question is: In our healthcare system and in other healthcare systems, if you want to take a precision oncology approach, how do you create the pipelines? And what types of technologies really lend themselves to benefits over and above next-generation sequencing or multigene panels, allowing for access to off-label therapies? What does that look like? Does that actually improve patients? I think some of the challenges, of course, is because of heterogeneity, small benefiting populations, finding a signal if a signal is indeed there is really challenging. And so, what we are thinking through is, with respect to real-world evidence methods and emulating randomized controlled trials, what types of evidence methods actually allow us to find those signals if indeed those signals are there in the context of small benefiting populations? Dr. Rafeh Naqash:Thank you so much, Dean. Sounds like a very exciting field, especially in the current day and age where cost-effectiveness, financial toxicity is an important aspect of how we improve upon what is existing in oncology. And then lots more to be explored, as you mentioned. The last minute and a half I want to ask about you as an individual, as a researcher. There's very few people who have expertise in oncology, biomarkers, and health economics. So could you tell us for the sake of our trainees and early career physicians who might be listening, what was your trajectory briefly? How did you end up doing what you're doing? And maybe some advice for people who are interested in the cost of care, the cost of oncology drugs - what would your advice be for them very briefly? Dr. Dean Regier:Sure. So I'm an economist by training, and indeed I knew very little about the healthcare system and how it works. But I was recruited at one point to BC Cancer, to British Columbia, to really try to understand some of those questions around costs, and then I learned also around cost-effectiveness. And so, I did training in Scotland to understand patient preferences and patient values around quality of care, not just quantity of life, but also their quality of life and how that care was provided to them. And then after that, I was at Oxford University at the Nuffield Department of Population Health to understand how that can be incorporated into randomized control trials in children. And so, I did a little bit of learning about RCTs. Of course, during the way I picked up some epidemiology with deep understanding of what I call econometrics, what others might call biostatistics or just statistics. And from there, it was about working with clinicians, working with epidemiologists, working with clinical trialists, working with economists to understand the different approaches or ways of thinking of how to estimate efficacy, effectiveness, safety, and cost-effectiveness. I think this is really important to think through is that we have clinical trialists, we have people with deep understanding of biostatistics, we have genome scientists, we have clinicians, and then you add economists into the mix. What I've really benefited from is that interdisciplinary experience, meaning that when I talk to some of the world's leading genome scientists, I understand where they're coming from, what their hope and vision is. And they start to understand where I'm coming from and some of the tools that I use to understand comparative effectiveness and cost-effectiveness. And then we work together to actually change our methods in order to answer those questions that we're passionate about and curious about better for the benefit of patients. So, the short answer is it's been actually quite a trajectory between Canada, the UK. I spent some time at the University of Washington looking at the Fred Hutch Cancer Research Center, looking at precision oncology. And along the way, it's been an experience about interdisciplinary research approaches to evaluating comparative outcomes. And also really thinking through not just at one point in time on-off decisions—is this effective? Is it safe? Is it cost-effective?—not those on-off decisions, but those decisions across the lifecycle of a health product. What do those look like at each point in time? Because we gain new evidence, new information at each point in time as patients have more and more experience around it. And so what really is kind of driving our research is really thinking about interdisciplinary approaches to lifecycle evaluation of promising new drugs with the goal of having these promising technologies to patients sooner in a way that is sustainable for the healthcare system. Dr. Rafeh Naqash:Awesome. Thank you so much for those insights and also giving us a sneak peek of your very successful career. Thank you for listening to JCO Precision Oncology Conversations. Don't forget to give us a rating or review, and be sure to subscribe so you never miss an episode. You can find all ASCO shows at asco.org/podcast. Thank you. The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement.

Treatment of Metastatic Non-Small Cell Lung Cancer With Targeted Mutations

Oncology Brothers

Play Episode Listen Later May 15, 2025 21:47

Join us in this episode of the Oncology Brothers podcast as we dive deep into the rapidly evolving treatment landscape for metastatic non-small cell lung cancer (NSCLC) with actionable mutations in frontline therapy. Hosted by community oncologists Drs. Rahul and Rohit Gosain, we are thrilled to welcome Dr. Susan Scott, a thoracic medical oncologist from the Johns Hopkins Hospital. In this episode, we covered: •⁠ ⁠Common EGFR mutations and the latest treatment options, including osimertinib, amivantamab, and chemotherapy combinations. •⁠ ⁠The importance of comprehensive NGS testing and the need for retesting at progression. •⁠ ⁠Insights into managing side effects associated with various therapies, including the proactive management of cutaneous toxicities. •⁠ ⁠Treatment strategies for less common mutations such as ALK, ROS1, BRAF, and RET, along with their respective targeted therapies. •⁠ ⁠The role of immunotherapy in specific mutations and the importance of patient choice and preferences in treatment decisions. Whether you're a practicing oncologist or simply interested in the latest advancements in cancer treatment, this episode is packed with valuable information to help guide your practice. YouTube: https://youtu.be/LMYDAjZcn5w Follow us on social media: •⁠ ⁠X/Twitter: https://twitter.com/oncbrothers •⁠ ⁠Instagram: https://www.instagram.com/oncbrothers •⁠ Website: https://oncbrothers.com/ Don't forget to like, subscribe, and hit the notification bell for more updates from the Oncology Brothers!

treatments drs targeted mutation rahul ret johns hopkins hospital metastatic alk ngs nsclc braf susan scott small cell lung cancer ros1

Pembrolizumab and Bevacizumab for Melanoma Brain Metastases

Journal of Clinical Oncology (JCO) Podcast

Play Episode Listen Later May 8, 2025 23:59

Host Dr. Davide Soldato and guest Dr. Harriet Kluger discuss the JCO article "Phase II Trial of Pembrolizumab in Combination With Bevacizumab for Untreated Melanoma Brain Metastases." Transcript The guest on this podcast episode has no disclosures to declare. Dr. Davide Soldato Hello and welcome to JCO After Hours, the podcast where we sit down with authors from some of the latest articles published in the Journal of Clinical Oncology. I am your host, Dr. Davide Soldato, Medical Oncologist at Ospedale San Martino in Genoa, Italy. Today, we are joined by JCO author Dr. Harriet Kluger. Dr. Kluger is a professor of medicine at Yale School of Medicine, Director of the Yale SPORE in Skin Cancer, and an internationally recognized expert in immuno-oncology for melanoma and renal cell carcinoma. She leads early-phase and translational trials that pair novel immunotherapies with predictive biomarkers to personalized care. Today, Dr. Kluger and I will be discussing the article titled "Phase 2 Trial of Pembrolizumab in Combination with Bevacizumab for Untreated Melanoma Brain Metastases." In this study, Dr. Kluger and colleagues evaluated four cycles of pembrolizumab plus the anti-VEGF antibody bevacizumab followed by pembrolizumab maintenance in patients with asymptomatic non-hemorrhagic melanoma brain metastases that had not previously received PD-1 therapy. Thank you for speaking with us, Dr. Kluger. Dr. Harriet Kluger Thank you for inviting me. The pleasure is really all mine. Dr. Davide Soldato So to kick off our podcast, I just wanted to ask if you could outline a little bit the biological and clinical rationale that led you to test this type of combination for patients with untreated brain metastases from metastatic melanoma. Dr. Harriet Kluger Back in approximately 2012, patients who had untreated brain metastases were excluded from all clinical trials. So by untreated, I mean brain metastases that had not received local therapy such as surgery or radiation. The reason for it was primarily because there was this fear that big molecules wouldn't penetrate brain lesions because they can't pass the blood-brain barrier. Turns out that the blood-brain barrier within a tumor is somewhat leaky and drugs sometimes can get in there. When PD-1 inhibitors were first identified as the next blockbuster class of drugs, we decided to conduct a phase 2 clinical trial of pembrolizumab monotherapy in patients with untreated brain metastases. We actually did it also in lung cancer, and we could talk about that later on. Responses were seen. The responses in the brain and the body were similar. They were concordant in melanoma patients. Now, at approximately that time, also another study was done by the Australian group by Dr. Georgina Long, where they did a randomized trial where patients who didn't require immediate steroid therapy received either nivolumab alone or nivolumab with ipilimumab, and the combination arm was substantially superior. Subsequently, also, Bristol Myers Squibb also conducted a large phase 2 multicenter trial of ipilimumab and nivolumab in patients with untreated brain metastases. And there, once again, they saw that the responses in the brain were similar to the responses in the body. Now, somewhere along the line there, we completed our anti-PD-1 monotherapy trial. And when we looked at our data, we still didn't have the data on ipilimumab and nivolumab. And our question was, “Well, how can we do better?” Just as we're always trying to do better. We saw two really big problems. One was that patients had a lot of perilesional edema. And the other one was that we were struggling with radiation necrosis in lesions that were previously Gamma Knifed. The instance of radiation necrosis was in excess of 30%. So the rationale behind this study was that if we added bevacizumab, maybe we could treat those patients who had some edema, not requiring steroids, but potentially get them on study, get that PD-1 inhibitor going, and also prevent subsequent radiation necrosis. And that was the main rationale behind the study. We had also done some preclinical work in mouse models of melanoma brain metastases and in an in vitro blood-brain barrier model where we showed that bevacizumab, or anti-VEGF, really tightens up those leaky basement membranes and therefore would be very likely to decrease the edema. Dr. Davide Soldato Thank you very much for putting in context the combination. So this was a phase 2 trial, and you included patients who had at least one lesion, and you wanted lesions that were behind 5 and 20 millimeters. Patients could be included also if the brain metastasis was higher in dimension than 20 millimeters, but it had to be treated, and it was then excluded from the evaluation of the primary objective of the trial. So regarding, a little bit, these characteristics, do you think that this is very similar to what we see in clinical practice? And what does this mean in terms of applicability of these results in clinical practice? Dr. Harriet Kluger So that's an excellent question. The brain metastasis clinical research field has somewhat been struggling with this issue of inclusion/exclusion criteria. When we started this, we showed pretty clearly that 5 to 10 millimeter lesions, which are below the RECIST criteria for inclusion, are measurable if you use MRIs with slices that are 1 to 2 millimeters. Most institutions in the United States do use these high-resolution MRIs. I don't know how applicable that is on a worldwide scale, but we certainly lowered the threshold for inclusion so that patients who have a smattering of small brain metastases would be eligible. Now, patients with single large brain metastases, the reason that we excluded those from the trial was because we were afraid that if a patient didn't respond to the systemic therapy that we were going to give them, they could really then develop severe neurological symptoms. So, for patient safety, we used 20 millimeters as the upper level for inclusion. Some of the other trials that I mentioned earlier also excluded patients with very large lesions. Now, in practice, one certainly can do Gamma Knife therapy to the large lesions and leave the smaller ones untreated. So I think it actually is very applicable to clinical practice. Dr. Davide Soldato Thank you very much for that insight, because I think that sometimes criteria for clinical trials, they have to be very restrictive. But then we know that in clinical practice, the applicability of these results is probably broader. So, going a little bit further in the results of the study, I just wanted a little bit of comment from you regarding what you saw in terms of intracranial response rate and duration of response among patients who obtained a response from the combination treatment. Dr. Harriet Kluger So we were actually surprised. When we first designed this study, as I said earlier, we weren't trying to beat out ipilimumab and nivolumab. We were really just trying to exclude those patients who wouldn't have otherwise been eligible for ipilimumab and nivolumab because of edema or possibly even previous radiation necrosis. So it was designed to differentiate between a response rate of 34%, and I believe the lower bound was somewhere in the 20s, because that's what we'd seen in the previous pembrolizumab study. What we saw in the first 20 patients that we enrolled was actually a response rate that far exceeded that. And so we enrolled another cohort to verify that result because we were concerned about premature publishing of a result that we might have achieved just by chance. The two cohorts were very similar in terms of the response rates. And certainly this still needs to be verified in a second study with additional institutions. We did include the Moffitt Cancer Center, and the response rate with Moffitt Cancer Center was very similar to the Yale Cancer Center response rate. Now, your other question was about duration of response. So the other thing that we started asking ourselves was whether this high response rate was really because the administration of the anti-VEGF will decrease the gadolinium enhancement and therefore we might actually just be seeing prettier scans but not tumor shrinkage. And the way to differentiate those two is by looking at the duration of the response. Median progression-free survival was 2.2 years. That's pretty long. The upper bound on the 95% confidence interval was not reached. I can't tell you that the duration is as good as the duration would be when you give ipilimumab. Perhaps it is less good. This was a fairly sick population of patients, and it included some who might not have been able to receive ipilimumab and nivolumab. So it provides an alternative. I do believe that we need to do a randomized trial where we compare it to ipilimumab and nivolumab, which is the current standard of care in this patient population. We do need to interpret these results with caution. I also want to point out regarding the progression-free survival that we only gave four doses of anti-VEGF. So one would think that even though anti-VEGF has a long half-life of three or four weeks, two years later, you no longer have anti-VEGF effect, presumably. So it does something when it's administered fairly early on in the course of the treatment. Dr. Davide Soldato So, in terms of clinical applicability, do you see this combination of pembrolizumab and bevacizumab - and of course, as we mentioned, this was a phase 2 trial. The number of patients included was not very high, but still you saw some very promising results when compared with the combination of ipilimumab and nivolumab. So do you see this combination as something that should be given particularly to those patients who might not be able to receive ipilimumab and nivolumab? So, for example, patients who are very symptomatic from the start or require a high dose of steroids, or also to provide a quicker response in terms of patients who have neurological symptoms, or do you think that someday it could be potentially used for all patients? Dr. Harriet Kluger The third part of your question, whether it can be used someday for all patients: I think we need to be very careful when we interpret these results. The study was substantially smaller than the ipilimumab/nivolumab trial that was conducted by Bristol Myers Squibb. Also going to point out that was a different population of patients. Those were all frontline patients. Here we had a mix of patients who'd had previous anti-CTLA-4 and frontline patients. So I don't think that we can replace ipilimumab and nivolumab with these results. But certainly the steroid-sparing aspect of it is something that we really need to take into consideration. A lot of patients have lesions in locations where edema can be dangerous, and some of them have a hard time coming off the steroids. So this is certainly a good approach for those folks. Dr. Davide Soldato And coming back to something that you mentioned in the very introduction, when you said that there were two main problems, which was one, the problem of the edema, and the second one, the problem of the radionecrosis. In your trial, there was a fair percentage of patients who received some type of local treatment before the systemic one. So the combination of pembrolizumab and bevacizumab. And most of the patients received radiosurgery. So I just wanted a brief comment regarding the incidence of radionecrosis in the trial and whether that specific component of the combination with bevacizumab was reduced. And how do you think that this fares in terms of what we see in clinical practice in terms of radionecrosis? Dr. Harriet Kluger I'm not sure that we really reduced the incidence of radiation necrosis. We saw radiation necrosis here. We saw less of it than in the trial of pembrolizumab monotherapy, but these were also different patients, different time. We saw more than we thought that we were going to see. It was 27%, I believe, which is fairly high still. We only gave the four doses of bevacizumab. Maybe to really prevent radiation necrosis, you have to continue to give the bevacizumab. That, too, needs to be tested. The reason that we gave the four doses of bevacizumab was simply because of the cost of the bevacizumab at the time. Dr. Davide Soldato Thank you very much for that comment on radionecrosis. And I really think that potentially this is a strategy, so continuing the bevacizumab, that really makes a lot of sense, especially considering that the tolerability of the regimen was really very, very good, and you didn't see any significant or serious adverse events related to bevacizumab. So just wondering if you could comment a little bit on the toxicities, whether you had anything unexpected. Dr. Harriet Kluger There was one patient who had a microperforation of a diverticulum, which was probably related to the bevacizumab. It was conservatively managed, and the patient did fine and actually remains alive now, many years later. We had one patient who had dehiscence of a previous wound. So there is some. We did not see any substantial hypertension, proteinuria, but we only gave the four doses. So it is possible that if you give it for longer, we would see some side effects. But still, relative to ipilimumab, it's very, very well tolerated. Dr. Davide Soldato Yeah, exactly. I think that the safety profile is really different when we compare the combination of ipilimumab/nivolumab with the pembrolizumab/bevacizumab. And as you said, this was a very small trial and probably we need additional results. But still, these results, in terms of tolerability and safety, I think they are very interesting. So one additional question that I think warrants a little bit of comment on your part is actually related to the presence of patients with BRAF mutation and, in general, to what you think would be the best course of treatment for these patients who present with the upfront brain metastases. So this, it's actually not completely related to the study, but I think that since patients with BRAF mutation were included, I think that this warrants a little bit of discussion on your part. Dr. Harriet Kluger So we really believe that long-term disease control, particularly in brain metastases, doesn't happen when you give BRAF/MEK inhibitors. You sometimes get long-term control if you've got oligometastatic disease in extracranial sites and if they've previously been treated with a lot of immune checkpoint inhibitors, which wasn't the case over here. So a patient who presents early in the course of the disease, regardless of their BRAF status, I do believe that between our studies and all the studies that have been done on immunotherapy earlier in the course of disease, we should withhold BRAF/MEK inhibitors unless they have overwhelming disease and we need immediate disease control, and then we switch them very quickly to immunotherapy. Can I also say something about the toxicity question from the bevacizumab? I have one more comment to make. I think it's important. We were very careful not to include patients who had overt hemorrhage from brain metastases. So melanoma brain metastases relative to other tumor types tend to bleed, and that was an exclusion criteria. We didn't see any bleeding that was attributable to the bevacizumab, but we don't know for sure that, if this is widely used, that that might not be a problem that's observed. So I would advise folks to use extreme caution and perhaps not use it outside of the setting of a clinical trial in patients with overt hemorrhage in the melanoma brain metastases. Dr. Davide Soldato Thank you very much. I think that one aspect that is really interesting in the trial is actually related to the fact that you collected a series of biomarkers, both circulating ones, but also some that were collected actually from the tissue. So just wondering if you could explain a little bit which type of biomarkers you evaluated and whether you saw any significant results that could suggest higher or lower efficacy of the combination. Dr. Harriet Kluger Thank you for that. So yes, the biomarker studies are fairly exploratory, and I want to emphasize that we don't have anything that's remotely useful in clinical practice at this juncture. But we did see an association between vessel density in the tumors and improved response to this regimen. So possibly those lesions that are more vascular are more fed by or driven by VEGF, and that could be the reason that there was improved response. We also saw that when there was less of an increase in circulating angiopoietin-2 levels, patients were more likely to respond. Whether or not that pans out in larger cohorts of patients remains to be determined. Dr. Davide Soldato Still, do you envision validation of these biomarkers in a potentially additional trial that will evaluate, again, the combination? Because I think that the signals were quite interesting, and they really make sense from a biological point of view, considering the mechanism of action of bevacizumab. So I think that, yeah, you're right, they are exploratory. But still, I think that there is very strong biological rationale. So really I wanted to congratulate you on including that specific part and on reporting it. And so the question is, really, do you envision validation of these biomarkers in larger cohorts? Dr. Harriet Kluger I would hope to see that, just as I'd like to see validation of the clinical results as well. The circulating biomarkers are very easy to do. It's a simple ELISA test. And the vessel density on the tumor is essentially CD34 staining and units per area of tumor. Also very simple to do. So I'd love to see that happen. Dr. Davide Soldato Do you think that considering the quality of the MRI that we are using right now, it would be possible to completely bypass even the evaluation on the tissue? Like, are we going in a direction where we can, at a certain point, say the amount of vessels that we see in these metastases is higher versus lower just based on MRI results? Dr. Harriet Kluger You gave me an outstanding idea for a follow-up study. I don't know whether you can measure the intensity of gadolinium as a surrogate, but certainly something worth asking our neuroradiology colleagues. Excellent idea. Thank you. Dr. Davide Soldato You're welcome. So just moving a step further, we spoke a lot about the validation of these results and the combination. And just wanted your idea on what do you think it would be more interesting to do: if designing a clinical trial that really compares pembrolizumab/bevacizumab with ipilimumab and nivolumab or going directly for the triplet. So we know that there has been some type of exploration of triplet combination in metastatic melanoma. So just your clinical impression: What would you do as an investigator? Dr. Harriet Kluger So it's under some discussion, actually. It's very difficult to compare drugs from different companies in an investigator-initiated trial. Perhaps our European colleagues can do that trial for us. In the United States, it's much harder, but it can be done through the cooperative groups, and we are actually having some discussions about that. I don't have the answer for you. It would be lovely to have a trial that compared the three drugs to ipi/nivo and to pembrolizumab/bevacizumab. So a three-arm trial. But remember, these are frontline melanoma patients. There aren't that many of them anymore like there used to be. So accrual will be hard, and we have to be practical. Dr. Davide Soldato Yeah, you're right. And in the discussion of the manuscript, you actually mentioned some other trials that are ongoing, especially one that is investigating the combination of pembro and lenvatinib, another one that is investigating the combination of nivolumab and relatlimab. So just wondering, do you think that the molecule in terms of VEGF inhibition, so bevacizumab versus lenvatinib, can really make a difference or is going to be just a mechanism of action? Of course, we don't have the results from this trial but just wondering if you could give us a general comment or your opinion on the topic. Dr. Harriet Kluger So that's a really great question. The trial of pembrolizumab and lenvatinib was our answer to the fact that bevacizumab is not manufactured by the same company as pembrolizumab, and we're trying to give a practical answer to our next study that might enable us to take this approach further. But it does turn out from our preclinical studies that bevacizumab and VEGF receptor inhibition aren't actually the same thing in terms of the effects on the blood-brain barrier or the perilesional tumor microenvironment in the brain. And these studies were done in mice and in in vitro models. Very different effects. The lenvatinib has stronger effect on the tumors themselves, the tumor cells themselves, than the bevacizumab, which has no effect whatsoever. But the lenvatinib doesn't appear to tighten up that blood-brain barrier. Dr. Davide Soldato Thank you. I think that's very interesting, and I think it's going to be interesting to see also results of these trials to actually improve and give more options to our patients in terms of different mechanism of action, different side effects. Because in the end, one thing that we discussed is that some combination may be useful in some specific clinical situation while others cannot be applicable, like, for example, an all immunotherapy-based combination. Just one final comment, because I think that we focused a lot on the intracranial response and progression-free survival. You briefly mentioned this but just wanted to reinforce the concept. Did you see any differences in terms of intracranial versus extracranial response for those patients who also had extracranial disease with the combination of pembro and bevacizumab? Dr. Harriet Kluger So the responses were almost always concordant. There were a couple of cases that might have had a body response and not an intracranial response and vice-versa, but the vast majority had concordant response or progression. We do believe that it's a biological phenomenon. The type of tumor that tends to go to the brain is going to be the type of tumor that will respond to whatever the regimen is that we're giving. In the previous trial also, we saw concordance of responses in the body and the brain. Dr. Davide Soldato Thank you very much. Just to highlight that really the combination is worth pursuing considering that there was not so much discordant responses, and the results, even in a phase 2 trial, were very, very promising. So thank you again, Dr. Kluger, for joining us today and giving us a little bit of insight into this very interesting trial. Dr. Harriet Kluger Thank you for having me. Dr. Davide Soldato So we appreciate you sharing more on your JCO article titled "Phase 2 Trial of Pembrolizumab in Combination with Bevacizumab for Untreated Melanoma Brain Metastases," which gave us the opportunity to discuss current treatment landscape in metastatic melanoma and future direction in research for melanoma brain metastasis. If you enjoy our show, please leave us a rating and review and be sure to come back for another episode. You can find all ASCO shows at asco.org/podcasts. The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement.

Protein GSK3β Offers New Angle on Overcoming Melanoma Drug Resistance

Play Episode Listen Later Apr 11, 2025 3:59

BUFFALO, NY - April 11, 2025 – A new research perspective was published in Oncotarget, Volume 16, on April 4, 2025, titled “GSK3β activation is a key driver of resistance to Raf inhibition in BRAF mutant melanoma cells." In this work, first author Diana Crisan and corresponding author Abhijit Basu from the University Hospital Ulm led a team that presents experimental evidence pointing to the protein GSK3β as a key contributor to drug resistance in melanoma. Their findings suggest that GSK3β becomes increasingly active in cancer cells during treatment, helping them survive and adapt despite ongoing therapy with BRAF inhibitors. Melanoma is a type of skin cancer in which nearly half of patients have mutations in the BRAF gene that accelerate tumor growth. While treatments targeting BRAF, known as BRAF inhibitors, initially work well, tumors often find ways to fight back. This research perspective explores how GSK3β, a protein involved in metabolism and cell survival, becomes more active in melanoma cells that develop resistance to BRAF inhibitors. Researchers treated melanoma cells with a common BRAF mutation using Dabrafenib, a widely used BRAF inhibitor. Over time, the cancer cells developed resistance and showed a marked increase in GSK3β levels. This pattern was confirmed across multiple melanoma cell models, suggesting that the finding is consistent and reliable. Importantly, the researchers observed that treating resistant cancer cells with a GSK3β inhibitor significantly reduced their growth. This result suggests that blocking this protein could restore sensitivity to treatment, highlighting GSK3β as a promising therapeutic target and supporting the idea of combining GSK3β inhibitors with existing melanoma therapies. “Remarkably, treatment of BRAFi-resistant melanoma cells with the GSK3 inhibitor LY2090314 for three weeks could overcome resistance and significantly decreased melanoma cell growth, confirming the causal role of GSK3 activation for BRAFi resistance development.” The research perspective adds to ongoing efforts to understand and overcome melanoma drug resistance. It shows that resistance is not driven only by genetic mutations but may also involve adaptive changes in the cell's internal signaling and survival mechanisms. By identifying GSK3β as a potential contributor, the authors offer a new direction for improving the durability of targeted treatments in melanoma. As research continues, GSK3β may be a critical factor in the long-term success of melanoma therapy, particularly for patients who have stopped responding to standard BRAF-targeted drugs. Continue reading: DOI: https://doi.org/10.18632/oncotarget.28711 Correspondence to: Abhijit Basu — abhijit.basu@alumni.uni-ulm.de Video short - https://www.youtube.com/watch?v=G2Tq4_r6xLw Subscribe for free publication alerts from Oncotarget - https://www.oncotarget.com/subscribe/ About Oncotarget Oncotarget (a primarily oncology-focused, peer-reviewed, open access journal) aims to maximize research impact through insightful peer-review; eliminate borders between specialties by linking different fields of oncology, cancer research and biomedical sciences; and foster application of basic and clinical science. Oncotarget is indexed and archived by PubMed/Medline, PubMed Central, Scopus, EMBASE, META (Chan Zuckerberg Initiative) (2018-2022), and Dimensions (Digital Science). To learn more about Oncotarget, please visit https://www.oncotarget.com and connect with us: Facebook - https://www.facebook.com/Oncotarget/ X - https://twitter.com/oncotarget Instagram - https://www.instagram.com/oncotargetjrnl/ YouTube - https://www.youtube.com/@OncotargetJournal LinkedIn - https://www.linkedin.com/company/oncotarget Pinterest - https://www.pinterest.com/oncotarget/ Reddit - https://www.reddit.com/user/Oncotarget/ Spotify - https://open.spotify.com/show/0gRwT6BqYWJzxzmjPJwtVh MEDIA@IMPACTJOURNALS.COM

overcoming reddit buffalo researchers offers protein angle doi melanoma braf drug resistance scopus ny april embase oncotarget gsk3 dabrafenib

Mutational Testing in mCRC: Methods and Data Driving Treatment Selection

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/MutationalTestinginmCRcMethodsandDataDrivingTreatmentSelection/32942/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

data testing driving treatments methods selection cme colorectal cancer rmd braf gynecologic cancers reachmd mcrc cme/ce mutational oncology and hematology global oncology academy

Case Consult: Adverse Effect Monitoring, Management, and Mitigation During Targeted Therapy for BRAF-Mutant mCRC

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/case-consult-adverse-effect-monitoring-management-and-mitigation-during-targeted-therapy-for-braf-mutant-mcrc/33134/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

management monitoring consult mutant mitigation cme adverse rmd targeted therapy braf gynecologic cancers reachmd mcrc cme/ce global oncology academy

Proactive Adverse Effect Management in mCRC: Improving Tolerability to Optimize Patient Outcomes

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/ProactiveAdverseEffectManagementinmCRCImprovingTolerabilitytoOptimizePatientOutcomes/32945/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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Defining the Standard of Care and Optimal Sequencing in BRAF-Mutant mCRC: Second Line and Beyond

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/DefiningtheStandardofCareandOptimalSequencinginBRAFMutantmCRcSecondLineandBeyond/32944/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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From Guidelines to Practice: First-Line Treatment Choices in mCRC

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/from-guidelines-to-practice-first-line-treatment-choices-in-mcrc/32943/ This series provides expert perspectives on the management of metastatic colorectal cancer (mCRC), with a focus on the timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, and the management of treatment-related adverse events.

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Proactive Adverse Effect Management in mCRC: Improving Tolerability to Optimize Patient Outcomes

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/ProactiveAdverseEffectManagementinmCRCImprovingTolerabilitytoOptimizePatientOutcomes/32945/ In this series, Dr. Fortunato Ciardiello and Dr. Jenny Seligmann review the management of metastatic colorectal cancer (mCRC), with a focus on timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, the management of treatment-related adverse events.

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Mutational Testing in mCRC: Methods and Data Driving Treatment Selection

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/MutationalTestinginmCRcMethodsandDataDrivingTreatmentSelection/32942/ In this series, Dr. Fortunato Ciardiello and Dr. Jenny Seligmann review the management of metastatic colorectal cancer (mCRC), with a focus on timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, the management of treatment-related adverse events.

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From Guidelines to Practice: First-Line Treatment Choices in mCRC

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/from-guidelines-to-practice-first-line-treatment-choices-in-mcrc/32943/ In this series, Dr. Fortunato Ciardiello and Dr. Jenny Seligmann review the management of metastatic colorectal cancer (mCRC), with a focus on timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, the management of treatment-related adverse events.

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Defining the Standard of Care and Optimal Sequencing in BRAF-Mutant mCRC: Second Line and Beyond

Oncology Peer Review On-The-Go

Play Episode Listen Later Mar 31, 2025

CME credits: 1.00 Valid until: 21-11-2026 Claim your CME credit at https://reachmd.com/programs/cme/DefiningtheStandardofCareandOptimalSequencinginBRAFMutantmCRcSecondLineandBeyond/32944/ In this series, Dr. Fortunato Ciardiello and Dr. Jenny Seligmann review the management of metastatic colorectal cancer (mCRC), with a focus on timing and methodology of molecular testing, targeted treatment combinations for BRAF-mutant mCRC, the management of treatment-related adverse events.

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S1 Ep153: Redefining the Treatment Paradigm in Low Grade Serous Ovarian Cancer

Play Episode Listen Later Mar 17, 2025 31:09

Molecular differences in the profiles of low grade serous ovarian cancer (LGSOC) and high-grade SOC substantiate the need to find unique, differentiated treatment options for each epithelial ovarian cancer subtype, according to Kathleen N. Moore, MD, MS. CancerNetwork® spoke with Moore, Virginia Kerley Cade Endowed Chair of Cancer Development, associate director of Clinical Research at the Stephenson Cancer Center, director of the Oklahoma TSET Phase I Program and professor in the Section of Gynecologic Oncology the University of Oklahoma Health Sciences Center, about distinguishing low grade serous ovarian cancer from other types of ovarian cancer, current treatment options and clinical trials evaluating new regimens, as well as managing treatment in younger patients with or those seeking to preserve fertility. Moore began by differentiating LGSOC from high grade SOC, stating that this disease typically occurred in younger patients and was primarily characterized by MAP kinase alterations, specifically KRAS and BRAF mutations. She then discussed the emergence of endocrine therapies in this indication owing to the presence of estrogen receptors. Additionally, first line treatment was discussed, with the standard of care defined by primary cytoreduction followed by paclitaxel and carboplatin. She then highlighted multiple clinical trials assessing alternative treatment in this indication, particularly involving the use of letrozole (Femara). Other clinical trials evaluated the use of CDK4/6 inhibition plus fulvestrant or BRAF and MEK inhibition with letrozole, with Moore emphasizing the potential for these studies to shift the treatment paradigm in the frontline setting. Furthermore, she suggested that CDK4/6 inhibition may help enhance responses in patients with recurrent LGSOC. Moore then highlighted treatment concerns for younger patients and those seeking to preserve fertility, while expressing the importance of understanding a patient's goals, which may help optimize outcomes. She concluded by reiterating the importance of designing trials and tailoring treatment considering the molecular profile of LGSOC.

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S3E1 The Oncology Journal Club Podcast: ASCO GI Highlights 2025

The Oncology Podcast

Play Episode Listen Later Mar 12, 2025 46:13 Transcription Available

Send us a textWelcome to The Oncology Journal Club Podcast Series 3! Proudly produced by The Oncology NetworkThree respected oncologists dive deep into the most significant research presented at ASCO GI 2025, bringing you practice-changing insights amidst a backdrop of political uncertainty affecting medical research.Professor Chris Karapetis joins hosts Professor Craig Underhill and Professor Christopher Jackson to unpack ground-breaking colorectal cancer studies that are reshaping treatment paradigms. The conversation explores how targeted therapies are dramatically improving survival rates, with the DEEPER study demonstrating cetuximab's superiority over bevacizumab for left-sided RAS wild-type disease, achieving an impressive 50-month median survival when combined with chemotherapy.The experts dissect the BREAKWATER trial, which shows promising benefits of combining encorafenib and cetuximab with chemotherapy for notoriously aggressive BRAF-mutant colorectal cancer. This combination achieved a 61% response rate versus 40% with standard care, with responses lasting significantly longer – representing a potential new standard of care for this difficult-to-treat subgroup.Perhaps most surprisingly, our panel discusses how an inexpensive, familiar medication – aspirin – could reduce colorectal cancer recurrence by 40% in patients with PIK3CA mutations according to the ALASCCA study. This finding highlights how molecular profiling is becoming essential across treatment stages, not just for expensive targeted therapies but also for optimising use of accessible interventions.The discussion extends to exciting developments in pancreatic cancer with a novel pan-RAS inhibitor showing meaningful activity, and advancements in immunotherapy for MSI-high colorectal cancer, confirming combination therapy's superiority. For gastrointestinal oncologists navigating an increasingly complex treatment landscape, this episode offers crucial insights to optimise patient outcomes through precise, personalised approaches.Subscribe to The Oncology Newsletter for regular updates on the latest cancer research and join our community at oncologynetwork.com.au.The Oncology Podcast - An Australian Oncology Perspective

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JCO PO Article Insights: Therapy of Infantile Midline Low-Grade Gliomas

JCO Precision Oncology Conversations

Play Episode Listen Later Feb 20, 2025 5:32

In this JCO Precision Oncology Article Insights episode, Jiasen He summarizes “Midline Low-Grade Gliomas of Early Childhood: Focus on Targeted Therapies.” by Dr. Ludmila Papusha et al. published on July 08, 2024. TRANSCRIPT Jiasen He: Hello and welcome to JCO Precision Oncology Article Insights. I'm your host Jiasen He, a JCO Journal's Editorial Fellow. Today, I will provide a summary on “Midline Low-Grade Gliomas of Early Childhood: Focus on Targeted Therapies.” This is an observational study by Dr. Ludmila Papusha and colleagues that investigated the use of target therapies in early childhood with midline low grade glioma. Low grade glioma located in the hypothalamic chiasmatic region, thalamus and the brain stem are classified as midline low grade gliomas. Due to their unique locations, complete surgical resection is usually not able to be achieved. In young children with low grade glioma, radiation therapy is generally not favored. Traditionally, chemotherapy regimens such as carboplatin and vincristine have been used. However, as Dr. Papusha noted, this population often exhibits poor response to chemotherapy. With a growing understanding of the RAS-RAF-MEK pathways in low grade glioma, targeted therapy has emerged as a promising treatment option for this group. However, limited data is available regarding the mutation status of midline low grade glioma in early childhood and real world evidence on their response to targeted therapy remains scarce. Dr. Papusha's research aimed to address this critical gap by evaluating the effectiveness of targeted therapy in midline gliomas of early childhood. In this observational study, 40 patients under the age of three with midline low grade glioma were enrolled. Somatic genetic aberrations associated with activation of RAS-RAF signaling pathway were identified in 95% of the cohort with BRAF fusion being the most common aberration followed by the BRAF V600E mutation. These findings confirm the presence of targetable mutations in this specific population and provide a foundation for the use of targeted therapy. Diencephalic syndrome is a rare neurologic disorder typically affecting infants and young children with tumors located in the diencephalon. In this cohort, 43% of the optic pathway and hypothalamic gliomas manifested diencephalic syndrome. Among 30 patients who received first line chemotherapy, primary carboplatin and vincristine, the two-year and five-year progression-free survival rate were only 24% and 6.4% respectively, indicating that most patients experience disease progression with chemotherapy. Targeted therapy was administered to 27 patients of whom 22 experienced disease progression during or after chemotherapy. A total of 26 patients were available for evaluation. Dr. Papusha reported that all patients benefited from targeted therapy with 12 achieving a partial response, 2 showing a minor response and 12 maintaining stable disease. The median duration of targeted therapy was 16 months. These findings demonstrate the efficacy of targeted therapy in this population. Regarding toxicity from targeted therapy in this population, the most common adverse event was grade 1 to 2 skin toxicity observed in 52% of patients. Severe toxicity occurred in 36% of patients treated with trametinib including grade 3 skin toxicity, mucositis and hematuria. Additionally, grade 3 gastrointestinal toxicity was reported. Interestingly, all three patients who experienced grade 3 gastrointestinal toxicity had diencephalic syndrome at the time of targeted therapy initiation. The author also noted cases of disease progression during treatment breaks. However, tumor response was restored in all affected patients upon resumption of targeted therapy. The two-year progression-free survival rate was 59%. In conclusion, Dr. Papusha states the unique characteristics of infantile midline low grade glioma, including the high prevalence of diencephalic syndrome and resistance to chemotherapy. The study contributes valuable information on the targetable mutation profile in this population and provides further evidence supporting the use of targeted therapy while emphasizing the need for low monitoring of severe adverse events. As the author notes, important questions remain regarding the long term side effects of kinase inhibitors in infants and children as well as optimal duration of therapy. Thank you for listening to JCO Precision Oncology Article Insights and please tune in for the next topic. Don't forget to give us a rating or review and be sure to subscribe so you never miss an episode. You can find all ASCO shows at asco.org/podcasts. The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement.

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Panitumumab with Low-Dose Capecitabine as a Maintenance Regimen: A Viable Option?

Play Episode Listen Later Feb 18, 2025 4:23

BUFFALO, NY - February 18, 2025 – A new #researchpaper was #published in Oncotarget, Volume 16, on February 12, 2025, titled “Could Panitumumab with very low dose Capecitabine be an option as a maintenance regimen." In this study, researchers Doaa A. Gamal, Aiat Morsy, and Mervat Omar from Assiut University Hospital, evaluated a new maintenance treatment for metastatic colorectal cancer (mCRC). Their findings suggest that a combination of two drugs—Panitumumab, a targeted therapy that blocks a protein called epidermal growth factor receptor to slow cancer growth, and low-dose Capecitabine, a chemotherapy drug that converts into 5-fluorouracil (5-FU) inside the body to stop cancer cells from growing and dividing—could help extend survival in patients with mCRC. This regimen appears to be both effective and well-tolerated, especially for patients with wild-type KRAS mCRC who had previously responded to treatment. Colorectal cancer is one of the leading causes of cancer-related deaths worldwide. Standard treatment often involves a combination of chemotherapy and targeted therapies, but many patients face challenges related to treatment toxicity and resistance, which can lead to treatment interruptions. This study tested whether a lower-intensity maintenance treatment could help keep the cancer under control after initial treatment. The study involved 25 mCRC patients with wild-type KRAS and BRAF, who first received six rounds of standard 5-FU-based chemotherapy with Panitumumab. Patients who responded well then switched to a maintenance treatment of Panitumumab every two weeks and a low, continuous dose of Capecitabine. The results showed that patients had a median progression-free survival of 18 months and a median overall survival of 45 months, indicating a strong potential benefit. Patients with metastases detected at the same time as the primary tumor showed a longer progression-free survival than those with metastases appearing later. The treatment was also well tolerated, with only 8% of patients experiencing severe side effects such as skin rash or diarrhea, which were managed with standard treatments. "In our research, the toxicity profile was very acceptable, and no patients needed to stop treatment or had a dose modification due to toxicity." Finding a way to keep cancer under control while reducing side effects is a major goal in cancer treatment. While other maintenance therapies like Bevacizumab and Cetuximab have been studied, this research suggests that Panitumumab with low-dose Capecitabine could be a promising new option. Panitumumab is already an FDA-approved drug, but its role in maintenance therapy had not been extensively explored. The results of this study suggest that this combination may help delay disease progression while keeping side effects manageable, ultimately improving patients' quality of life. Although larger studies are needed, these findings open the door for further clinical trials to confirm the benefits of this regimen. If validated, this approach could change the standard of care for mCRC patients, particularly those who cannot tolerate more intensive chemotherapy. DOI - https://doi.org/10.18632/oncotarget.28687 Correspondence to - Doaa A. Gamal - doaaalygamaal@gmail.com Video short - https://www.youtube.com/watch?v=wuPSS0EdK-8 To learn more about Oncotarget, please visit https://www.oncotarget.com and connect with us: Facebook - https://www.facebook.com/Oncotarget/ X - https://twitter.com/oncotarget Instagram - https://www.instagram.com/oncotargetjrnl/ YouTube - https://www.youtube.com/@OncotargetJournal LinkedIn - https://www.linkedin.com/company/oncotarget Pinterest - https://www.pinterest.com/oncotarget/ Reddit - https://www.reddit.com/user/Oncotarget/ Spotify - https://open.spotify.com/show/0gRwT6BqYWJzxzmjPJwtVh MEDIA@IMPACTJOURNALS.COM

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Therapeutic Advances Across GI Cancers: Highlights From GI25