ASCO Guidelines

ASCO Podcasts
ASCO Podcasts
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ASCO Guidelines Podcast breaks down pivotal recommendations from the latest evidence-based clinical practice guidance and provides insight into daily patient care. Listen to stay up to date with the ever-evolving landscape of cancer research and treatment.

  1. -6 h

    Therapy for Stage IV NSCLC With Driver Alterations: ASCO Living Guideline Update 2026.3.2

    Dr. Sonam Puri joins the podcast to share the update to the living guideline on stage IV NSCLC with driver alterations. Dr. Puri discusses the practice-changing evidence reviewed for both NTRK rearrangements, including the TRIDENT-1 trial, and HER2 activating mutations, including the Beamion LUNG-1 study. She shares how these results impacted the clinical practice guideline with the addition of repotrectinib and zongertinib, what these new TKIs mean for patients, and where the panel is waiting for additional randomized data to clarify the role of therapeutic options. Dr. Puri encourages listeners to stay tuned for future updates to the living guideline as new evidence is published. Read the full living guideline "Therapy for Stage IV Non-Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2026.3.2" at www.ascopubs.org/guidelines/therapy-stage-iv-non-small-cell-lung-cancer-driver-alterations" LINK TO FULL TRANSCRIPT

  2. 29 juin

    Treatment of Multiple Myeloma: ASCO Living Guideline Update 2026.1.1

    Dr. Rahul Banerjee joins the podcast to discuss the latest update to the living guideline on the treatment of multiple myeloma. He explains how sensational results from the MajesTEC-3 trial, which evaluated teclistamab plus daratumumab, prompted a major shift in the recommendations for patients with relapsed or refractory disease. Dr. Banerjee details why immunotherapies, specifically CAR T-cell therapy and bispecific antibodies, are now the preferred treatment options at first relapse over traditional triplets. He also provides context on evidence that did not lead to recommendation changes, the importance of individualized decision-making when choosing between immunotherapy options, and what future updates may be on the horizon, including data on CELMoDs. Read the full living guideline, "Treatment of Multiple Myeloma: ASCO Living Guideline, Version 2026.1.1," at www.ascopubs.org/guidelines/treatment-multiple-myeloma-asco-living-guideline

  3. 18 juin

    Circulating Tumor DNA Testing in Solid Tumors and Lymphoma Guideline

    Drs. Tina Lockwood and Stacy Gray share the newly released evidence-based guideline on circulating tumor DNA (ctDNA) testing from ASCO. They highlight recommendations on when ctDNA testing should be offered—including scenarios where tissue biopsies are challenging, unsafe, or unavailable in time to guide management—and explicitly outline situations where testing should not be utilized. They dive into the evidence evaluating ctDNA for treatment selection, molecular residual disease (MRD), and response monitoring across solid tumors and lymphoma. Drs. Lockwood and Gray explain the importance of balancing ctDNA's high specificity with its moderate sensitivity. They also touch on outstanding questions, including standardizing definitions for MRD, disease-specific applications, and the use of multi-cancer early detection (MCED) screening.  Read the full guideline, "Circulating Tumor DNA Testing in Solid Tumors and Lymphoma: ASCO Guideline" at www.asco.org/molecular-testing-and-biomarkers-guidelines" LINK TO FULL TRANSCRIPT

  4. 26 mai

    Therapy for Stage IV NSCLC With Driver Alterations: ASCO Living Guideline Update 2026.3.1 Part 2

    Dr. Joshua Reuss returns to the podcast to discuss the update to the living guideline on stage IV NSCLC with driver alterations. The conversation focuses on new cancer treatment strategies for patients with advanced NSCLC and EGFR mutations, including classical EGFR alterations (exon 19 deletions, exon 21 L858R substitution) and rarer alterations (exon 20 insertion mutations). Dr. Reuss discusses results from clinical trials, including MARIPOSA and CHRYSALIS-2 and how these impacted first-line and subsequent line treatment recommendations. He looks to the future on what new evidence and potential updates are in the pipeline for this living guideline. Read the full living guideline "Therapy for Stage IV Non-Small Cell Lung Cancer with Driver Alterations, ASCO Living Guideline Version 2026.3.1"  LINK TO FULL TRANSCRIPT

  5. 26 mai

    Therapy for Stage IV NSCLC Without Driver Alterations: ASCO Living Guideline Update 2026.3.1 Part 1

    Dr. Lyudmila Bazhenova joins the podcast to share the update to the living guideline on stage IV NSCLC without driver alterations. Dr. Bazhenova discusses the evidence reviewed for both non-squamous NSCLC, including the POD1IM-304 and BAP BRAIN trials, and squamous cell NSCLC, including the HARMONi-6 trial. She shares how these results impacted the clinical practice guideline, what they mean for patients receiving immunotherapy and chemotherapy, and where the panel is waiting for additional evidence to clarify the role of therapeutic options. Dr. Bazhenova encourages listeners to stay tuned for future updates to the living guideline after publication of data from the 2026 ASCO Annual Meeting. Read the full living guideline "Therapy for Stage IV Non-Small Cell Lung Cancer without Driver Alterations, ASCO Living Guideline Version 2026.3.1" LINK TO FULL TRANSCRIPT

  6. 1 avr.

    Systemic Treatment of Thyroid Cancer Guideline

    Dr. Nabil Saba shares the first evidence-based guideline on thyroid cancer from ASCO. He highlights recommendations on first- and subsequent-line systemic treatment – including multikinase inhibitors (MKIs), genomically targeted therapies, immunotherapy, and cytotoxic chemotherapy across four subtypes of thyroid cancer: well-differentiated, differentiated high-grade or poorly differentiated, anaplastic, and medullary thyroid cancer. He dives into the evidence supporting each recommendation and explains the importance of shared decision-making on the risks and benefits of each treatment option. Dr. Saba also touches on outstanding questions including sequencing of agents, addressing resistance, emerging biomarker targets, and management of toxicities. Read the full guideline, "Systemic Treatment of Thyroid Cancer: ASCO Guideline." TRANSCRIPT This guideline, clinical tools and resources are available at https://ascopubs.org/topics/asco-guidelines/head-neck-cancer. Read the full text of the guideline and review authors' disclosures of potential conflicts of interest in the Journal of Clinical Oncology. Brittany Harvey: Hello and welcome to the ASCO Guidelines podcast, one of ASCO's podcasts delivering timely information to keep you up to date on the latest changes, challenges, and advances in oncology. You can find all the shows, including this one, at asco.org/podcasts. My name is Brittany Harvey, and today I'm interviewing Dr. Nabil Saba from Emory University, lead author on "Systemic Treatment of Thyroid Cancer: ASCO Guideline." Thank you for being here today, Dr. Saba. Dr. Nabil Saba: Pleasure to be here. Brittany Harvey: And then just before we discuss this guideline, I'd like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Saba, who has joined us here today, are available online with the publication of the guideline in the Journal of Clinical Oncology, which is linked in the show notes. So then to dive into what we're here today to talk about, Dr. Saba, could you start us off by providing a general overview of the scope and purpose of this first ASCO guideline for thyroid cancer? Dr. Nabil Saba: So thyroid cancer is a complex disease, and the complexity has been added with the advent of multiple systemic therapeutic agents that have recently come on as part of the standard of care for treating this disease. The guidelines have lagged behind, I believe, in terms of being able to clearly delineate how to use these agents and what clinical settings to use them. And so this guideline, I think, is a much-needed and much-awaited guideline for clinicians to allow them to understand better the use of systemic agents in the treatment of thyroid cancer. And when we talk about systemic agents, what we want to specify is this applies mostly for patients with recurrent metastatic disease, patients who have failed the standard initial treatment, which continues to be surgical resection for these patients if surgery is possible, in addition to radioiodine therapy for the right clinical setting. Brittany Harvey: Absolutely. It's a good point that this patient population for this guideline focuses mainly on recurrent disease and patients who have already received surgery and radioactive iodine therapy. So then this guideline covers four subtypes of thyroid cancer, including well-differentiated, differentiated high-grade or poorly differentiated, anaplastic, and medullary thyroid cancer. As you mentioned, you address clinical questions on systemic therapies, including multikinase inhibitors, genomically targeted therapies, immunotherapy, and cytotoxic chemotherapy in both the first-line and subsequent lines for each of these subtypes. So I'd like to review the key recommendations by subtype. So first, what are the key points for systemic therapy for well-differentiated thyroid cancer? Dr. Nabil Saba: It's important to also stress the point that we have these different subtypes of thyroid cancer. So when we talk about radioiodine refractory, those are for patients who are candidates for radioiodine therapy, of course. This usually encompasses the well-differentiated thyroid cancer. So for this group of patients, the guideline focuses on whether the use of multikinase inhibitors compared to placebo or observation impacts the survival in the first-line setting, whether the use of targeted therapies compared to placebo impacts also the survival in the first-line setting, all in the radioiodine refractory setting, of course. And then we tackle the issue of immunotherapy because this also is a topic that has entered the realm, if you like, of thyroid cancer and is being used in some subtypes of thyroid cancer. So we thought it would be important to raise the question of the role of immunotherapy compared to targeted agents or multikinase inhibitors, in addition to the role of cytotoxic therapy or chemotherapy, as we say, in this patient population. So the guideline goes through all of these questions and then makes specific recommendations as to the use of some of the agents in the first-line setting and second-line setting in case these patients progress after first-line setting. So, for example, it's clear that for patients who are radioiodine refractory and who have well-differentiated thyroid cancer, multikinase inhibitors are centerpiece of the first-line treatment option. And for this patient population, the recommendation essentially is to use lenvatinib or sorafenib, even though lenvatinib is considered to be the first choice in this patient population in the first-line setting. For the subsequent line settings, patients should be offered cabozantinib, which has been also proven in randomized trials. As far as genomically targeted therapy, there is always the contention of whether these agents should be initiated first in case the patient has a genomically altered disease. And so, for example, if the patient has a RET alteration or NTRK alteration, the recommendation here is in favor of using RET-targeted therapies such as selpercatinib or NTRK-targeted therapies such as larotrectinib or entrectinib for these patients as a first-line setting. If they do have the BRAF alteration, which is a commonly seen alteration in these settings, the guideline essentially indicates that this may be offered initially prior to treatment with multikinase inhibitors as well, even though the quality of the evidence here is rather lower, and the strength of the recommendation is conditional. And so it's clear that multikinase inhibitors, in the absence of any of these genomic alterations, is really the first line, and then the question becomes when do we use these genomically targeted approaches in patients who have genomically altered disease? Which basically introduces also the complexity of the question here because we have multiple agents depending on these genomic findings. And then it is sometimes confusing for practitioners which one to use or what do we use first? And so I think the guideline provides clarity in terms of what is acceptable, what is rather not acceptable, what is based on a strong recommendation, what is based on a rather weaker recommendation. I think that's part of the value of such a guideline. And then finally we have the question of radioiodine well-differentiated and the question of immunotherapy as a first line. And here we do not recommend using immunotherapy for this patient population. For patients with subsequent line settings, potentially adding pembrolizumab to a multikinase inhibitor is mentioned, however the evidence is low, and the strength of the recommendation is also conditional here. As far as chemotherapy, this is not recommended in this day and age for this patient population, however it may be considered also in patients who fail or progress on genomically targeted therapy and/or multikinase inhibitors. So this is the summary of the recommendations for well-differentiated thyroid cancer, but certainly, for details, I would refer you to the actual guideline since there are many nuances that cannot be covered during just this discussion. Brittany Harvey: Certainly. The full guideline will be available for listeners in our show notes, and there are many recommendation tables and figures that can help folks as they think through these recommendations. A lot of those key points are really important as clinicians think through which systemic therapies to offer and sequencing of these agents, as you mentioned. Following those recommendations for well-differentiated thyroid cancer, what are the recommendation highlights for systemic therapy for differentiated high-grade or poorly differentiated thyroid carcinoma? Dr. Nabil Saba: This entity is rather a rare entity. It's important to stress the fact that this entity has not really been very well represented in clinical trials, and so when we talk about differentiated high-grade or poorly differentiated, the information here is limited. However, the guideline infers on the recommendations to this subtype of thyroid cancer based on what we know for other subtypes. And I think because of the strength of evidence we have in the well-differentiated and the anaplastic thyroid cancer, this guideline for this subgroup of patients draws from these two guidelines and sort of makes recommendations based on this. So in the first-line setting, of course, if patients don't have a genomically altered disease, we certainly would recommend lenvatinib or sorafenib like we do in the well-differentiated disease. For patients with genomically altered diseases, we follow sort of the same guideline as we have followed for the well-differentiated setting, with the caveat that the quality is rather lower here and the stren

  7. 10 mars

    Patient-Clinician Communication Guideline Update

    Dr. Timothy Gilligan and Dr. Calvin Chou discuss the updated guideline on patient-clinician communication in oncology. They highlight clinical recommendations and strategies on topics such as communication skills and practices that apply at every visit, principles for telehealth interactions, cross-disciplinary communication, facilitating involvement of the patient's support network, discussing prognosis, goals of care, treatment selection – including clinical trials, end-of-life discussions, overcoming barriers to communication, facilitating discussions of cost of care and financial toxicity, mitigating stigma, and setting boundaries with patients. Dr. Gilligan and Dr. Chou also share how clinicians can enhance their communication skills through skills practice opportunities and experiential learning. They discuss how fundamental communication is to optimal patient care and look to the future on how generative AI may impact healthcare communication. Read the full guideline, "Patient-Clinician Communication: ASCO Guideline Update"  TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/supportive-care-guidelines. Read the full text of the guideline and review authors' disclosures of potential conflicts of interest in the Journal of Clinical Oncology,  https://ascopubs.org/doi/10.1200/JCO-26-00118       Brittany Harvey: Hello and welcome to the ASCO Guidelines podcast, one of ASCO's podcasts delivering timely information to keep you up to date on the latest changes, challenges, and advances in oncology. You can find all the shows, including this one, at asco.org/podcasts. My name is Brittany Harvey, and today I am interviewing Dr. Timothy Gilligan from Taussig Cancer Institute and the Center for Excellence in Healthcare Communication at Cleveland Clinic, and Dr. Calvin Chou from the University of California and Veterans Affairs Health Care System in San Francisco, co-chairs on "Patient-Clinician Communication: ASCO Guideline Update." Thank you for being here today, Dr. Gilligan and Dr. Chou. Dr. Timothy Gilligan: Thank you for having us. Dr. Calvin Chou: Delighted to be here. Brittany Harvey: And then just before we discuss this guideline, I would like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO Conflict of Interest Policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Gilligan and Dr. Chou who have joined us here today, are available online with the publication of the guideline in the Journal of Clinical Oncology, which is linked in the show notes. So then I would like to dive into what we are here really today to talk about. So Dr. Gilligan, this guideline updates the patient-clinician communication guideline that was first published in 2017. What prompted this update and what is the scope of this updated guideline? Dr. Timothy Gilligan: So I think with the first guideline, that was the first draft of it that we published five or six, seven years ago, really we were focused on getting the content right, what was the state of the knowledge at that time, and I was very happy with what came out of that. But when I looked back on it, I thought there were ways we could make it more accessible and more practical. Because what we really would like would be for people to apply what we know and then communicate more effectively with patients and colleagues. And one of the reasons I was really excited on the membership of the panel we had this time was I thought they were very well selected to help us do that, is to really think about what are practical guidelines, practical steps we can tell people to take that will improve their own experience and the experience of patients and the quality of care. Brittany Harvey: Absolutely, thinking about operationalizing that guideline really improves the dissemination and the uptake of these recommendations. So then, Dr. Chou, I would like to review the key recommendations and strategies across the clinical questions that the guideline addressed. I realize today with our limited time we may not be able to go through every recommendation and strategy, so we will start with some of the highlights. First, let's address the highlights of the process of communication with patients and their support networks. This includes the questions that address what communication skills and practices apply at every visit across the continuum of care, principles for telehealth interactions, cross-disciplinary communication, and facilitating involvement of the patient's support network. In your view, what are the most important recommendations across these clinical questions? Dr. Calvin Chou: I think the thing that all clinicians know in their bones that they want to be able to do effectively with patients is to communicate information clearly, as well as to communicate in a way that really deepens the relationship, demonstrates empathy, and also demonstrates understanding bilaterally between the various parties. So the communication guidelines that we established in this group, they are fundamental to communication in all conversations throughout healthcare. And the first guideline talks about how clinicians and their team can communicate effectively with the patient and the patient's support network. And those include things like preparing ahead of time; getting a list of the topics that are important to the patient support network so that we can consider them in the visit; making certain that we are hearing what the patients' and the patients' support networks are saying very, very closely; responding to those empathically; and being able to have conversations about care throughout the visit that demonstrate respect and deepen the trust; and then finally, to have some kind of bidirectional understanding, usually through teach-back, that allow both sides to know that communication has occurred as opposed to just been downloaded. The guidelines also talk about applying these same communication skills throughout telehealth communication - that is both in terms of synchronous communication, audio or video, as well as asynchronous communication, i.e., through secure messaging. We also talk about how we can use these same communication skills to communicate effectively with members of our own team. Interprofessional communication is an important part of all the work that we do, and how we can use these very, very same skills in communication with colleagues, with nursing staff, with social workers, and other allied health professionals. These are all very, very important, crucial members of our healthcare team in the delivery of care to our patients. And that is something that we really need to emphasize throughout to try to bring the best of communication in every conversation that we have. Dr. Timothy Gilligan: I totally agree with that. Those are really important points. When I was looking over it in preparation for this podcast, it struck me that we have a lot of recommendations and a lot of small things that we can do either well or not well. And it reminded me of a quotation from a famous chef, Marco Pierre White, who said that perfection is a lot of little things done well. This guideline has a lot of little things that if you do them well, you get better outcomes. And I think the chef's point was that if you want a really delicious dish, you have to pay attention to all those little details. And I think if people go through the guidelines carefully and apply the skills that are along the lines of what Dr. Chou was talking about, we get better results. And those results are really important results. It is not only patient satisfaction, which is really important, but it is also quality of care and outcomes for patients. It is better medical care. It is a better day for us, we have a better day if we have better conversations. Poor communication creates endless headaches for everybody. What I see in the guidelines is it is a lot of little best practices and it requires discipline to learn those. The good news is none of them I don't think are all that hard. The bad news is doing it consistently well every day requires discipline and practice. And what I would hope for these guidelines is that people will read them carefully and think about what they can do to apply what we know more consistently. And I think the interprofessional communication piece, that was something we added this year, is really critical. Medicine has a bad history of really disrespectful behavior. It was almost normalized that different specialties would make fun of each other, that different professions would talk disrespectfully of each other. And we know now that uncivil behavior results in more healthcare errors. And it is not only bad for our teams and our culture, but it is bad for our patients if we are not communicating well with each other. So I thought it was really critical that we added that piece to the update. Brittany Harvey: Absolutely. Those fundamental principles that Dr. Chou outlined are really key across every healthcare interaction, including those interdisciplinary interactions. And as you alluded to, Dr. Gilligan, I think it will really serve clinicians well to review the details and go through every table to read the recommendations and each individual strategy to help them improve their communication in day-to-day interactions. Moving to some of those day-to-day clinical communication scenarios, Dr. Gilligan, I'd like to think through some of those key points. So what is recommended for discussion of prognosis, goals of care, treatment selection, including discussion of clinical trials, and end-of-life discussions? Dr. Timothy Gilligan: So my perspective is that there is a broad theme of flattening the hierarchy that runs through these recommendations and this part of the guid

  8. 26 févr.

    Immunotherapy and Targeted Therapy for Advanced Gastroesophageal Cancer Guideline Update

    Dr. Lakshmi Rajdev and Dr. Manish Shah join the podcast to discuss the updated guideline on immunotherapy and targeted therapy in unresectable locally advanced, advanced, or metastatic gastroesophageal cancer. They share first-line and subsequent-line recommendations for both gastroesophageal adenocarcinoma and esophageal squamous cell carcinoma based on actionable biomarkers including PD-L1 expression, MMR and/or MSI, CLDN18.2 expression, and HER2 status. They note the importance of the algorithms and tables in the guidelines that provide visual illustrations and quick reference guides of the evidence-based recommendations. They also comment on ongoing and recently presented trials that may impact future guidelines in this space. Read the full guideline, "Immunotherapy and Targeted Therapy for Advanced Gastroesophageal Cancer: ASCO Guideline Update" at www.asco.org/gastrointestinal-cancer-guidelines" TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/gastrointestinal-cancer-guidelines. Read the full text of the guideline and review authors' disclosures of potential conflicts of interest in the Journal of Clinical Oncology,  https://ascopubs.org/doi/10.1200/JCO-25-02958      Timestamps ·       00:00 – 02:15 Introduction and Overview ·       02:16 - 08:20 First-line treatment for patients with pMMR/MSS, HER2-negative gastroesophageal adenocarcinoma ·       08:21 –10:29 First-line treatment for patients with pMMR/MSS, HER2-positive gastroesophageal adenocarcinoma ·       10:30 – 14:39 First-line treatment for patients with dMMR/MSI-H, gastroesophageal adenocarcinoma ·       14:40 – 18:03 First-line treatment for ESCC ·       18:04 – 22:04 Second- and third-line therapy for gastroesophageal adenocarcinoma and ESCC ·       22:05 – 24:38 Importance of guideline ·       24:39 – 27:45 Outstanding questions and future research   Brittany Harvey: Hello and welcome to the ASCO Guidelines podcast, one of ASCO's podcasts delivering timely information to keep you up to date on the latest changes, challenges, and advances in oncology. You can find all the shows, including this one, at asco.org/podcasts.   My name is Brittany Harvey, and today I am interviewing Dr. Lakshmi Rajdev from the Icahn School of Medicine at Mount Sinai and Dr. Manish Shah from Weill Cornell Medicine, co-chairs on "Immunotherapy and Targeted Therapy for Advanced Gastroesophageal Cancer: ASCO Guideline Update." Thank you for being here today, Dr. Rajdev and Dr. Shah. Dr. Lakshmi Rajdev: Thank you. Dr. Manish Shah: Thank you for having us. It is wonderful. Brittany Harvey: And then just before we discuss this guideline, I would like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Rajdev and Dr. Shah, who have joined us here today, are available online with the publication of the guideline in the Journal of Clinical Oncology, which is linked in the show notes. So then to dive into what we are here today to talk about, Dr. Shah, I would like to start first with what prompted the update to this guideline, which was previously published in 2023, and what is the scope of this updated guideline? Dr. Manish Shah: Yes, terrific. So even in the last few years, the pace of drug development in gastroesophageal cancers has just been astounding. So, what prompted this guideline is actually the practice-changing results for a new biomarker, CLDN18.2 hat was based on the GLOW and SPOTLIGHT studies, as well as a practice-changing study in HER2-positive disease where we added pembrolizumab to trastuzumab and chemotherapy for tumors that are HER2-positive and PD-L1 CPS 1 or greater. And then there were also new studies and new approvals in esophageal squamous cell cancer that you will hear about as well. So there were several studies, overall more than 5,000 patients were reported on, and that led to several new therapies, new indications, and it really necessitated this guideline. Brittany Harvey: Excellent. It is great to hear about all of these exciting updates in this space. So then to next review the key recommendations of this guideline by clinical question that the expert panel addressed. So, Dr. Rajdev, what is the recommended first-line treatment for patients with proficient mismatch repair, microsatellite stable, HER2-negative gastroesophageal adenocarcinoma? Dr. Lakshmi Rajdev: Thank you for that question. So historically, we have sort of used fluoropyrimidine and platinum doublets, which yielded a survival of about one year. More recently, immunotherapy and targeted therapy options have improved outcomes in patients with advanced esophageal and gastric adenocarcinoma, as well as squamous cell carcinoma. Patients with gastric and GE junction adenocarcinoma have a high rate of actionable alterations, so it is imperative that physicians test the following biomarkers upfront so that it can help guide therapy. The markers recommended by the ASCO panel are HER2, MMR or MSI, CLDN18.2, and PD-L1. And also, it was recommended to use NGS if feasible in this patient population. HER2, as we know, is expressed in about 15% to 25% of patients; PD-L1 expression occurs in about 80% of patients; MSI-high, deficient MMR is present in about 5% to 8% of patients; and CLDN18.2 expression is present in about 40% of patients. There is, of course, biomarker overlap. About 13% to 22% of CLDN18.2 patients are also PD-L1 positive. For patients with pMMR or microsatellite stable HER2-negative disease with PD-L1 expression greater than 1 and absence of CLDN18.2, the panel recommended a first-line therapy with fluoropyrimidine and platinum-based therapy in combination with immunotherapy. These recommendations stem from large phase 3 trials, and the agents approved in the United States are pembrolizumab, nivolumab, and tislelizumab. It has been shown that immunotherapy benefit is greater in patients with higher PD-L1 expression, and it is not possible to comment on the individual PD-L1 cutoff scores and sort of identify the optimal PD-L1 cutoff score that sort of balances benefits and harms. But what is recommended is that immunotherapy-based treatments can be offered in patients with a CPS score of greater than 1. With regard to the choice of immunotherapy agents, that is pembrolizumab, nivolumab, or tislelizumab, these agents are considered to have similar efficacy, and the selection of an agent could be based on dosing schedule, cost considerations, toxicity, and the method of administration. Typically, clinicians should avoid withholding the start of chemotherapy while awaiting biomarker testing, depending on the clinical scenario. Now, for patients with pMMR microsatellite stable disease that is HER2-negative with PD-L1 expression less than 1 and positive CLDN18.2 expression, zolbetuximab-based treatments or in combination with chemotherapy is recommended, and this is based on two global phase III randomized controlled trials, the GLOW and the SPOTLIGHT. And across both studies, the hazard ratio for the overall survival was 0.78, and similarly, there was also an improvement in progression-free survival favoring the zolbetuximab group compared to the chemotherapy group alone. An important note is that nausea, vomiting is commonly associated with zolbetuximab-based treatments, and the panel recommended prophylactic antiemetics, adjusting zolbetuximab infusion rates, pausing infusion temporarily, using non-prophylactic antiemetics, and hydration intravenously prior to discontinuation of zolbetuximab-based chemotherapy. So effective handling of the GI-related symptoms with zolbetuximab is recommended prior to discontinuation of therapy. Now, for patients with pMMR microsatellite stable HER2-negative gastric, GE junction adenocarcinoma with PD-L1 expression greater than 1 and CLDN18.2 positivity, the ones with the dual expression with CLDN18.2 as well as PD-L1 chemotherapy, the choice of therapy can be based on the degree of PD-L1 expression, the toxicity profile, the burden of symptoms, and the anticipated improvement in symptoms associated with response to treatment, the patient comorbidities, the prior medical and treatment history. So this decision needs to be made on a case-by-case basis, and these are some of the factors that we suggested that could potentially influence the choice of therapy. For patients with pMMR microsatellite stable disease that is HER2-negative and a PD-L1 expression less than 1 and an absence of CLDN18.2 expression, first-line therapy with fluoropyrimidine and platinum-based chemotherapy is recommended. So you can see we have segmented out patients based on PD-L1 expression, pMMR and microsatellite stable disease expression, and also based on CLDN expression. Brittany Harvey: Absolutely. And that first point you noted, I think is really important, that biomarker testing is really critical for treatment decision-making in this space. So then the next subgroup of patients that the panel looked at, Dr. Shah, what first-line therapy is recommended for patients with proficient mismatch repair, microsatellite stable, HER2-positive gastroesophageal adenocarcinoma? Dr. Manish Shah: So this was an update from a few years ago. So we have known for 15 years now that if you are HER2-positive, you should get trastuzumab plus chemotherapy. That was based on the ToGA trial. And the update now is based on a trial called KEYNOTE-811, where it examined the addition of pembrolizumab to trastuzumab and chemotherapy versus trastuzumab and chemotherapy, and there was a progression-free and overall survival benefit. And again, here, the biomarkers are important. If your CPS PD-L1 is l

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ASCO Guidelines Podcast breaks down pivotal recommendations from the latest evidence-based clinical practice guidance and provides insight into daily patient care. Listen to stay up to date with the ever-evolving landscape of cancer research and treatment.

Informations

  • Chaîne
    ASCO Podcasts
  • Création
    American Society of Clinical Oncology (ASCO)
  • Années d’activité
    2018 - 2026
  • Épisodes
    200
  • Classification
    Tous publics
  • Site web de l’émission
    ASCO Guidelines

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