ASCO Guidelines

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 strength of the recommendation is rather conditional for this subtype of patients. And so I think the take-home message is we do have these recommendations similar to the well-differentiated, but the strength of these recommendations for this particular subgroup of thyroid cancer patients is not as strong, given the under-representation in clinical trials. And that's basically the summary of this disease. Same applies to immunotherapy as well as chemotherapy here. Brittany Harvey: Absolutely. I think it's important to recognize where the evidence is not as strong, it's really important that the guideline panel has still offered up some recommendations to help clinicians in their daily practice as well. The next subtype the guideline panel addressed, what does the expert panel recommend regarding systemic therapy for anaplastic thyroid cancer? Dr. Nabil Saba: So it's important to remind the audience that this is a disease with dismal outcome, and this is rather a very, very rare type of thyroid cancer. So the challenge with anaplastic is we've had very little traditionally in terms of options for patients. However, this guideline highlights the advances that have happened in this disease over a relatively short period of time and stresses the important role of systemic agents. And so, for example, for non-genomically mutant anaplastic thyroid cancer in the first-line setting, the guideline does recommend lenvatinib with or without pembrolizumab. Even though the evidence of the quality is low and the strength of the recommendation is conditional, there is enough data that this recommendation could be made. The added complexity for anaplastic thyroid cancer is that this is a disease where multimodal approaches initially are really encouraged as well, including surgical resection primarily, but also potentially thinking about other modalities such as radiation therapy, as these patients have usually very aggressive disease. And so as far as genomically targeted approaches, the story of targeting BRAF I believe has been a successful story in this disease. And again, for patients with BRAF V600E mutated anaplastic thyroid cancer in the first-line setting, the guideline is clear in saying that we should offer BRAF/MEK inhibitor targeted therapy, namely dabrafenib and trametinib based on published data; the quality is moderate, though the strength of the recommendation is strong, essentially because of the compelling data in these rather small studies. In the first-line setting, again, we may offer also BRAF/MEK inhibition with or without pembrolizumab as well, and the strength here is low, with the recommendation being conditional as well. So you can see here that unlike the other types, immunotherapy may play a bigger role here in this type of cancer compared to the well-differentiated carcinoma because of the nature of the disease, and this has been also stressed in other guidelines. For patients who progress on genomically targeted therapy, there are not too many options, even though people can revert back to lenvatinib or lenvatinib and pembro. We do recommend participation in clinical trials for these patients because we really don't have any clear-cut options since the strength of these recommendations is conditional for these patients. As far as the question of immunotherapy per se, we talked about lenvatinib with pembrolizumab. There is also data on ipilimumab and nivolumab. So we include that also as an option for the first-line setting, and we also include, obviously, the dabrafenib and trametinib in combination with pembrolizumab. And even though all these recommendations are conditional, the size of these clinical trials are single-arm phase II studies. In terms of chemotherapy, again, no recommendation in the first-line setting. However, for patients who fail MKI or fail immunotherapy, clinicians may offer cytotoxic chemotherapy. So you can see that in this rare disease, the recommendations already in 2026 indicate a complex tree of decision-making for a number of these cases. And I think this is where these guidelines offer value to many of the practitioners out there. Certainly, they don't claim to answer any or every possible clinical scenario for these patients because anaplastic thyroid cancer, like any thyroid cancer or any malignancy, usually has to rely on careful evaluation on a case-by-case basis, and for this disease in particular, on a multidisciplinary evaluation based on evaluation by surgical team, by medical oncology, by radiation oncology. But hopefully, these guidelines help at least put in the systemic therapy within that context. Brittany Harvey: Absolutely. I think this is also where, in the guideline, the clinical interpretation can really be helpful for readers. And as you mentioned, that multidisciplinary collaboration along with shared decision-making with patients on the risks and benefits of each treatment option is really critical here. So the final subtype that the guideline expert panel addressed, what systemic therapies are recommended for medullary thyroid cancer? Dr. Nabil Saba: Yes, so medullary thyroid cancer is a separate disease in its own merit, and biologically it's different from the other diseases. And even though it's a relatively rare thyroid cancer, there has been quite substantial advances in systemic therapy, and I think the guideline importantly highlights these advances for this type of thyroid cancer, and this subtype adds to the value of the guideline as well. For these cancers, targeted therapy for patients who have RET alteration is really recommended as a first line. So for patients who have RET mutant disease, selpercatinib certainly is the treatment of choice, and this is based on high evidence and the recommendation being very strong here because it's based on randomized phase III data. In the subsequent line settings, however, patients with RET-altered disease who have progressed on selpercatinib, unfortunately, we don't have clear-cut recommendations, however, participation in clinical trials is recommended. If a trial is not available, we recommend that patients be offered vandetanib or cabozantinib in this situation. For patients without the RET alteration, in other words, for patient populations with wild-type disease, the first-line setting should include cabozantinib or vandetanib based also on improved progression-free survival in randomized clinical trial, and here the recommendation is quite strong. In terms of the role of immunotherapy here, there is very, very little role, and so we don't recommend using immunotherapy in the first-line setting or subsequent line setting. Similarly, for chemotherapy or cytotoxic chemotherapy, it's not recommended that patients be exposed to cytotoxic chemotherapy outside of a clinical trial, whether this be in the first-line setting or second-line setting. We say that in the second-line setting, if patients have failed genomically targeted therapy, clinicians may offer cytotoxic therapy, however, here the evidence is low, and the strength of the recommendation is conditional. And so clearly that tells you that advances have been substantial in this disease, specifically in the realm of targeted therapies, which is importantly highlighted in this guideline as well. Brittany Harvey: Yes, it's great to see the advances across these different subtypes. So thank you for reviewing all of these recommendations. It's clear you and the panel spent a lot of time reviewing the evidence to craft these recommendations. So you've already touched on this throughout our conversation already, but I'd like to ask, in your view, Dr. Saba, what is the importance of this guideline, and how will it impact both clinicians and patients with thyroid cancer? Dr. Nabil Saba: This is a guideline that's important because of the complexity of management of thyroid cancer, in addition to the fact that there has been quite a few systemic therapeutic agents that have come to the scene in the disease, and those are used in specific situations. We talked about medullary thyroid cancer and the story of RET inhibition, for example, the question of sequencing of these agents is important - what do you choose first in terms of your choice depending on the clinical scenario, I think, is highlighted in this guideline. I think this is going to be extremely helpful to practitioners inside and outside the United States because it is going to offer a guide for them to essentially decide on what would be the standard therapeutic option that should be offered to these patients. I know that many of these agents are not perhaps available in other countries, and I hope this guideline will also raise awareness, since it is coming from ASCO, that these agents need to be explored and considered for a large group of the population that may not have access to them, especially outside the United States and in third-world countries. And so I think from that angle, I think also the guideline is important in that it sets what is the accepted standard in terms of systemic therapy for these patients with these different diseases. Brittany Harvey: Yes, these evidence-based guidelines certainly set a standard and it will be really important to have these in the hands of many different people to inform best practices for care. Additionally, you've also mentioned earlier that several of the recommendations referred patients to clinical trials where there wasn't evidence. So I'd like to ask, what are the outstanding questions and ongoing research you are watching in the thyroid cancer space? Dr. Nabil Saba: This guideline I would like to look at it as a start. This is a much-needed start, however, it also exposes us to the fact that there are so many unanswered questions yet. We still don't know the exact way or best way to sequence these agents. The story of, for example, multikinase inhibitors in well-differentiated thyroid cancers that have BRAF alteration, what is to be started first? Do you start with a multikinase inhibitor, or do you start with a BRAF inhibition? This is a topic of a cooperative group trial currently answering these questions in terms of what is the best sequencing because, you know, you do have the approved cabozantinib in the second line, for example, but you also have the approved BRAF inhibition, which could be done in the first or second line. And so sometimes that is confusing to clinicians for a good reason because no studies have really examined the question of the appropriate sequencing of these agents. And so I think the more we get these agents as available options for treating patients, the more pressing the question would be of what would be the best sequencing. So I think that's a major question to tackle, and hopefully clinical trials will tackle that. I think the question of resistance to some of these agents, we don't talk too much about that in the guideline, but certainly these agents have limitations. Not every patient who gets a genomically targeted approach is to benefit from that. We've seen many patients who progress on these, and so the question is, how to overcome resistance? Even for the strong data that we have, for example, on RET alteration or NTRK, resistance mechanisms do happen, and we've seen patients who fail larotrectinib and then they need to go on other therapeutic options. And so I think clinical trials are crucial in answering all these questions, in addition to targeting other subtypes of thyroid cancers that have not really been very common. We know that RAS is also seen in some thyroid cancers, HRAS. There have been some studies along that line. ROS is another potential target. And so the question of resistance, I think the question of sequencing, in addition to the question of toxicity. Because, you know, how best to dose these agents? We talked about this a little in the guideline, but again, the focus on this guideline was not too much the toxicity management. So I think management of toxicities should also be a topic of interest that needs to probably accompany any systemic therapy guideline since we're using agents that people may not be too familiar with when they use it for the first time. Brittany Harvey: Definitely. We'll look forward to the results of these trials that you mentioned to inform sequencing, resistance, new targets, and addressing toxicity and potentially inform updates to this guideline. So I want to thank you so much for your work to develop this first ASCO guideline for thyroid cancer and for your time today, Dr. Saba. Dr. Nabil Saba: It's been my pleasure and it's been a pleasure to actually accomplish this and publish this guideline because I do believe it will be of great benefit to the oncologic community. Brittany Harvey: Absolutely. And finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/head-neck-cancer-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines app, available in the Apple App Store or the Google Play Store. If you have enjoyed what you've heard today, please rate and review the podcast and be sure to subscribe so you never miss an episode. 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.

Dr. Calvin Chou, physician and communication scholar in San Francisco, and Dr. Timothy Gilligan, oncologist and communication expert at Cleveland Clinic, discuss updated guidance on clinician-patient communication. They cover core skills for every visit, telehealth practices, cross-disciplinary teamwork, discussing prognosis and goals, addressing stigma and costs, training clinicians, and the potential impact of generative AI on communication.

Dr. Manish Shah, medical oncologist and guideline co-chair with expertise in GI clinical research, and Dr. Lakshmi Rajdev, medical oncologist and guideline co-chair skilled in interpreting trial evidence, discuss updated recommendations for immunotherapy and targeted therapy in advanced gastroesophageal cancers. They cover biomarker-driven testing, first-line choices for adenocarcinoma and squamous cancers, CLDN18.2 and HER2 advances, and upcoming trials that may change practice.

Dr. Bishal Gyawali and Dr. Tessa Cigler share the new, comprehensive, evidence-based update of the ASCO guideline on the use of hematopoietic colony-stimulating factors in patients with cancer. They discuss recommendations on primary prophylaxis, secondary prophylaxis, and treatment of febrile neutropenia along with stem cell mobilization, efficacy, safety, duration, dosing, and administration of CSFs – including biosimilars. They highlight where it is appropriate to use a CSF, and importantly, when not to use a CSF. They touch on the significance of individual patient considerations and cost implications, and future work to refine the risk factors for the development of complications of febrile neutropenia. Read the full guideline, "White Blood Cell Growth Factors: ASCO Guideline Update" at www.asco.org/supportive-care-guidelines 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-25-02938 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. Bishal Gyawali from Queen's University in Kingston, Ontario, Canada, and Dr. Tessa Cigler from Weill Cornell Medicine in New York, New York, co-chairs on "White Blood Cell Growth Factors: ASCO Guideline Update." Thank you for being here today, Dr. Gyawali and Dr. Cigler. Dr. Bishal Gyawali: Thank you very much for having me. It's a pleasure. Dr. Tessa Cigler: Hi there. Nice to be here as well. Brittany Harvey: Great. And then 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. Cigler and Dr. Gyawali, 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'd like to dive into the guideline that we're here today to talk about. So first, what prompted an update to this guideline on the use of hematopoietic colony-stimulating factors in patients with cancer, and what is the scope of this updated guideline? Dr. Bishal Gyawali: The last version of the guidelines from ASCO on this topic was back in 2015, so it has been more than a decade since ASCO had a guideline on the use of G-CSF in patients with cancer receiving treatment. So it was due for an update because there has been a lot more evidence based on not necessarily new drugs, but evidence for proper timing of these agents and the duration of these agents, as well as there have been a lot of new biosimilars, and there are questions about are these biosimilars equivalent or how do we choose among these different options. One is that content of the evidence that has evolved over time in the last decade, but also I think the last time we had these guidelines, the ASCO guidelines were not incorporated to have those evidence GRADE tables. So the quality of the ASCO guidelines itself has evolved over the years, so we wanted to have a new version of the guideline that includes not only the new evidence, but also contains those evidence GRADE tables that will help to quantify the benefits. And so I think it was high time, and even more than that, the newer ASCO guidelines for any guideline, they also include considerations of cost, access, equity, and all these factors that were not included in the previous version of the guideline. So I think it's only natural that with time the guideline should also evolve. Dr. Tessa Cigler: I agree completely, and just as a framework, as we all know, neutropenia and its complications, including febrile neutropenia and infections, are still an important toxicity of many myelosuppressive chemotherapies. And these neutropenic complications do require prompt evaluation and treatment and often hospitalization, and we know that hematopoietic colony-stimulating factors, which I'm going to refer to as growth factors, can reduce the duration and severity of neutropenia and the risk of febrile neutropenia, so it remains an important topic in the practice of clinical oncology. Brittany Harvey: Absolutely. It's an important topic for both clinicians and for patients who are receiving treatment for their cancer. And as you said, there was a substantial amount of literature to review here and updating everything to be in line with the GRADE evidence rating system, so there was a lot of work that you both put into this. So then next, I'd like to review the key recommendations of this guideline by clinical question. So first, what factors did the expert panel identify that should influence the decision to administer primary prophylaxis of febrile neutropenia with a CSF? Dr. Bishal Gyawali: Yeah, so I think that constitutes one of the most important recommendations in our guidelines about primary prophylaxis with G-CSF. And this is important because not only it's about when to use it, it's also about when not to use it, as in the ASCO "Choosing Wisely" campaign has also made some recommendations about this. So our guideline recommendations are also aligned with that. So first of all, we recommend that primary prophylaxis with G-CSF is recommended when the risk of febrile neutropenia because of the chemotherapy regimen is equal to or more than 20% unless an alternative chemotherapy regimen with comparable efficacy and safety that does not need G-CSF is available. And the quality of evidence to make this recommendation is high, so we give a strong strength of recommendation for this. Having said that, even for patients where the risk of febrile neutropenia is not necessarily 20%, it's a little lower, but because of other patient-related factors, the patient is at a higher risk of complications from febrile neutropenia, such as age, comorbidities, and other factors, in such case primary prophylaxis with G-CSF should be offered. And we also make a recommendation that if G-CSF is not affordable or available, then antibiotic prophylaxis can also be offered, but the evidence quality for this is low, and the strength of recommendation is very conditional. A couple of things to highlight here would be that, I think Dr. Cigler can attest to that, we ran into lots of problems about finding the data for the evidence base to say what are the patient-related factors that actually make them at a higher risk of febrile neutropenia, you know, like how did that 20% benchmark come about? Why 20%? Or when we say even if it's less than 20%, if based on other comorbidities, if the risk is higher, we tried to dig into that evidence. For example, we're talking about our "Box 1" in the guideline, what is the evidence for each item we have included under that "Box 1"? And we tried to do a lot of search to find the evidence for that, and some of them do have strong evidence, and that will tie into our future research ideas as well. And some of them actually don't have such solid evidence too, so that was one of the reasons why we ran into lots of problems about how do we quantify whether someone is at a high risk of febrile neutropenia and where that 20% benchmark comes from. Dr. Tessa Cigler: And definitely, because there's not very clear data, our guidelines definitely leave room for physician discretion in all these situations. Brittany Harvey: Absolutely. I find that in a lot of these guidelines the key point is that there's a lot of shared decision-making with patients after talking through what risk factors they may have and what is best for them in their individual clinical scenario. So then moving on to secondary prophylaxis, what factors did the expert panel identify that should influence the decision to administer secondary prophylaxis of febrile neutropenia with a CSF? Dr. Tessa Cigler: So for patients who've already experienced a neutropenic complication from a previous cycle of chemotherapy, the question is which patients should then receive prophylactic G-CSF for subsequent cycles of chemotherapy. And without a lot of evidence again to guide us, the panel really felt strongly that secondary prophylaxis should be used when a treatment delay or when a reduced dose of chemotherapy would be thought to compromise cure rates or survival outcomes. We do note that in many situations, certainly a dose reduction or a delay would be a very reasonable alternative or an additional strategy to G-CSF administration. Dr. Bishal Gyawali: Yeah, I think it's more like if there is going to be compromise in outcomes without using G-CSF, as in if we can't maintain the dose intensity and that's going to lead to inferior outcomes, then we should. But if we can reduce the dose intensity and treatment frequency and still have the same outcomes, then I guess in simple words, we're just trying to say use it when it's absolutely needed, or you can also look into other alternatives that might not need G-CSF but you could maintain the same outcomes. Brittany Harvey: Understood. It's helpful to review those options for clinicians and showing that there's not just one way to address potential neutropenic complications for later cycles of chemotherapy. So then following those recommendations for prophylaxis, what does the expert panel recommend regarding CSFs for the treatment of febrile neutropenia? Dr. Bishal Gyawali: This is an important question because this ties strongly with the "Choosing Wisely" campaign. In other words, primary and secondary prophylaxis we talked about when CSF should be used; here we make a sort of negative recommendation in that we say when CSF should not be used, because this is where we see most overuse or overtreatment with G-CSF. So first, we say that we should not be using a CSF routinely simply because a patient has neutropenia. If they are afebrile but they only have neutropenia, we recommend against using CSF just to boost neutrophil counts; that's not a meaningful metric. Then the second recommendation we make is CSF should not be routinely used as an adjunctive treatment with antibiotic therapy for patients with fever and neutropenia. So the first one was neutropenia, no fever, don't use it. The second one is okay, there is neutropenia and fever, but the treatment for that is use of antibiotic therapy, and so in such situations routinely we should not be using G-CSF just to boost the neutrophil count. And that is tied on to the third recommendation where if the patient has fever and neutropenia but is also at a very high risk for infection-related complications or who have other prognostic factors that we think will lead to poor outcomes for the patient, then in such situations, a CSF can be used as an adjunctive treatment. But we talk about the data in the manuscript, but the data show that the most that this will do is reduce the days of hospitalization by a couple of days. It actually does not have any data that it's going to improve the mortality rates. So as of now, we use the word "may be offered," it's not "should be offered," it's "may be offered" if there are other factors that we think will make the patient at the very poor risk of mortality outcomes, and the evidence quality here therefore is low and our strength of recommendation is conditional. And we also have a box that lists those items that we think might be associated with poor prognosis for the patients, but again the data for those, are they really hard evidence? No. And that is also tied with our future research recommendation that we should study more about these factors that might lead to these poor outcomes. Dr. Tessa Cigler: And again, allowing for discretion of the treating physician. Brittany Harvey: Absolutely. It's just as important to know when not to use CSFs routinely, and those risk factor boxes that you mentioned are available in the full manuscript along with the full list of recommendations, and our listeners can refer to that; a link will be in the show notes of the episode . Dr. Tessa Cigler: Just so you know, the panel, we really discussed those criteria a lot and agonized over them and gave you our best recommendations. Brittany Harvey: Definitely, and it sounds like there was varying degrees of evidence to support a lot of those risk factors, and so it's really important that the evidence supports those, but also there was expert consensus of the panel in reviewing each of those factors individually to come up with recommendations that can be applicable for all clinicians. Dr. Bishal Gyawali: If I may add, we're proud of our panel because I think our panel is quite inclusive of people representing different specialties within cancer care, as in we had radiation oncologist, we had infectious disease expert, pharmacists, and most importantly, we also had patient partners. Brittany Harvey: Absolutely. Having a multidisciplinary panel is really important for each and every guideline. So then, this is probably relevant now, but addressing a few more specific sections addressed in the guideline, what is the role of CSFs as adjuncts to progenitor cell transplantation? Dr. Tessa Sigler: Great question, and so, as solid tumor oncologists, Dr. Gyawali and I really leaned heavily on our hematology experts within the panel. The panel decided that a CSF should be used alone after chemotherapy or in combination with a CXCR4 inhibitor to mobilize peripheral blood progenitor cells. Clearly the choice of mobilization strategy depends on the type of cancer and the type of transplantation. The panel noted that a CSF should be routinely administered after autologous stem cell transplantation to reduce the risk of severe neutropenia, and that a CSF may be administered after allogeneic stem cell transplant to reduce the duration of severe neutropenia. Again, this last recommendation has not a lot of evidence to support it, and so we kind of tempered our language that it may be administered or can be considered based on clinical judgment of the physician and the clinical status of the patient. Brittany Harvey: And that really highlights the need for a multidisciplinary panel, because as you are solid tumor oncologists, you need the hematologists to make recommendations for all sorts of patients and make sure that these guidelines are comprehensive. So then moving on to another smaller subset population, for patients receiving concomitant chemotherapy and radiation therapy, are CSFs recommended? Dr. Bishal Gyawali: I think there is very little evidence for patients who are receiving radiation therapy alone, so there is no evidence to suggest the use of CSF in patients with radiation therapy alone. The bigger question is in patients who are receiving both chemo and radiation together, chemoradiotherapy. In those patients, up until now, the classical recommendation has been to avoid G-CSF use. I think in our updated guidelines we discuss a couple newer trials that are trying to address this issue, but in the totality of evidence, we still stick with the same recommendation as before, which is CSFs are not recommended in patients receiving concomitant chemotherapy and radiation therapy, especially those involving the mediastinum because the biggest evidence of harm is for these patients. Dr. Tessa Cigler: I agree completely. Brittany Harvey: Definitely. It's important to recognize when that balance of benefits and harms leans more towards harms, and so that this should not be recommended for those patients. So there are several different CSFs that are recommended in the guideline, including biosimilars. So do the recommended CSFs differ in efficacy or safety? Dr. Tessa Cigler: So as supported by evidence, and the panel all agreed, that the various forms of CSFs, including the biosimilars, really have the same evidence for efficacy and for safety, and that the choice of agent really should depend on cost, availability, accessibility, patient convenience, and sometimes disease subtypes and treatment regimens. But, in essence, these can be used interchangeably without concern for efficacy or toxicity differences. Dr. Bishal Gyawali: I completely agree. I think in terms of efficacy outcomes, I don't think there is anything to choose between these agents. The choice between these agents would largely depend on different patient and treatment-related factors: cost, availability, affordability, feasibility. We even discuss things like where does the patient live, as in how frequently the patient can commit to the cancer center, and we also discussed things like even for the daily shots of filgrastim, patients can be taught and they can get it by themselves at home. So we discussed all these factors, but in a nutshell, the choice within these agents primarily depends not on efficacy factors, but simply based on all these other factors that are equally important but which can lead to informed decision-making about what is best for a given patient. But we mention it explicitly that the biosimilars, there is nothing to choose between them, especially the biosimilars; it's about price competition and what you can get at an affordable rate. Brittany Harvey: Understood. It's great to have many different options for patients so that there's something that can work for them based off access, cost, and all these factors that you listed. As you mentioned, it may be easier for some patients to get their treatment at home rather than in clinic, and so having different options and reviewing those with patients is very important. Dr. Bishal Gyawali: As we are having this conversation, I'm thinking that we might be a very unique guideline in that I don't think in many other settings you have this many options that you are asking about, you know, choices between equally good options and making decisions based on cost. I don't think there are any other areas in oncology where we have the privilege of making these decisions based on cost and convenience and all these factors, as well as we might be one of those guidelines where we have, as discussed before, so many recommendations about when not to do things and trying to promote judicial use of treatments. Dr. Tessa Cigler: As you might imagine, our panel discussions were very lively. Dr. Bishal Gyawali: Yes. But Dr. Cigler, do you recall any other guideline where there is so much discussion about when not to use things and how we have so many biosimilar options and we can choose the one that's most appropriate? I don't recall any other. Dr. Tessa Cigler: I agree with you. Brittany Harvey: It's certainly a unique guideline in that regard. So we'll move into the last clinical question that the expert panel addressed. But what does the expert panel recommend for the initiation, duration, dosing, and administration of CSFs? Dr. Bishal Gyawali: Yeah, I think there has been some new data in this regard that were not available in the previous guideline. For example, we have new trials testing a shorter duration of filgrastim injections compared to the standard of care. So we have some data, we call this 'de-escalation of treatment'. So we have more data supporting de-escalation of treatment. We have some data for lower dose of pegfilgrastim, we have data for lower duration of filgrastim, we have also some new data about timing of treatment, as in there has been some newer data presented about the relationship of timing of the drug and the frequency of adverse events from G-CSF such as bone pain. There is also the question about, for patients who don't live near the cancer center, can they get their pegfilgrastim shot on the day of chemo while they are in the cancer center? So all these questions that are very pragmatic and important questions, but were not answered before, we're glad that we had more evidence to talk about all these factors and give a more solid recommendation to our users of the guideline. Brittany Harvey: Definitely. And listeners can review the full list of dosing and administration recommendations in Table 2 in the guideline, and that will be linked in the show notes of the episode. So then I really want to thank you both for reviewing all of these recommendations. There's certainly a large amount of clinical questions and recommendations that you went through. I'd like to next ask, in your view, what is the importance of this updated guideline and how will it impact both clinicians and patients? Dr. Bishal Gyawali: I think the importance of this updated guideline is that, as mentioned before, we talk about newer data that have come up with regards to not just the most important two questions as in when to use it as primary prophylaxis and when to use it as secondary prophylaxis and when to use it as treatment, but also with regards to the duration and timing and dosing and multiple options and how these all factors as well as patient-related factors should be combined to make an informed decision, the most appropriate decision for the patient. And as mentioned before, we have the GRADE tables that were not in the previous version of this guideline. So I think even those users that are familiar with the 2015 guideline, I think they will find very novel content in this new updated guideline, and they will find it useful for their practice. I would encourage the readers to not only read the headlines of the box recommendations, but also read the full text of these guidelines because we have worked really hard to incorporate the latest evidence and also interpret them contextually. The discussion regarding de-escalation, patient considerations, cost implications; usually, people just skip these portions when they read a guideline. But I think these are also one of the most important paragraphs in our guideline, so they have been written with very careful thought, and I think reading the whole guideline is very much worth your time. Dr. Tessa Cigler: As you can imagine, I agree completely, having just spent several months thinking about these guidelines and all their nuances. Brittany Harvey: Certainly, this guideline is definitely a very comprehensive update, and that nuance in the manuscript is really important for clinicians to understand and read through and understand when it's appropriate to make certain decisions. So then to wrap us up, I'd like to ask, what are the outstanding questions and active research areas regarding the use of white blood cell growth factors in patients with cancer? Dr. Tessa Cigler: As you all know from clinical practice and that we've said several times already in this podcast is that the risk factors for the development of complications of febrile neutropenia are still not clearly worked out. And one of the things that is, I think, really needed in clinical practice is the development of predictive algorithms or biomarkers to really allow us to understand who might be more at risk and to allow for the clinician to be able to tailor the use of G-CSF as needed. Brittany Harvey: Yes, and so we'll look forward to future updates in this space to inform new recommendations and an updated guideline in the future. So I want to thank you both so much for your work to develop this comprehensive guideline. It was certainly a lot of effort, and thank you for your time today, Dr. Gyawali and Dr. Cigler. Dr. Tessa Cigler: Oh, my pleasure. It's nice to be here and to speak with you all. Dr. Bishal Gyawali: Yeah, it was great to speak with both of you but also through you to the audience, and we had a great time. Thank you. Brittany Harvey: And then finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/supportive-care-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines app, available in the Apple App Store or the Google Play Store. If you have enjoyed what you've heard today, please rate and review the podcast and be sure to subscribe so you never miss an episode. 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.

Dr. Sonam Puri discusses the full update to the living guideline on stage IV NSCLC with driver alterations. She shares a new overarching recommendation on biomarking testing and explains the new recommendations and the supporting evidence for first-line and subsequent therapies for patients with stage IV NSCLC and driver alterations including EGFR, MET, ROS1, and HER2. Dr. Puri talks about the importance of this guideline and rapidly evolving areas of research that will impact future updates. Read the full living guideline update "Therapy for Stage IV Non-Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2026.3.0" at www.asco.org/thoracic-cancer-guidelines TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/thoracic-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-25-02822 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. Sonam Puri from Moffitt Cancer Center, co-chair on "Therapy for Stage IV Non-Small Cell Lung Cancer with Driver Alterations: ASCO Living Guideline, Version 2026.3.0." It's great to have you here today, Dr. Puri. Dr. Sonam Puri: Thanks, Brittany. 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. Puri, 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 the content that we're here today to talk about, Dr. Puri, this living clinical practice guideline for systemic therapy for patients with stage IV non-small cell lung cancer with driver alterations is updated on an ongoing basis. So, what data prompted this latest update to the recommendations? Dr. Sonam Puri: So Brittany, non-small cell lung cancer is one of the fastest-moving areas in oncology right now, particularly when it comes to targeted therapy for driver alterations. New data are emerging continuously from clinical trials, regulatory approvals, real-world experience, which is exactly why these are living guidelines. The goal is to rapidly integrate important advances as they happen, rather than waiting for years for a traditional update. Since the last full update of the ASCO Stage IV Non-small Cell Lung Cancer Guideline with Driver Alterations published in 2024, there have been seven new regulatory approvals and changes in first-line therapy for some driver alterations. [This version] of the "Stage IV Non-small Cell Lung Cancer Guidelines with Driver Alterations" represents a full update, which means that the panel reviewed and refreshed every applicable section of the guideline to reflect the most current evidence across therapies including sequencing and clinical decision-making. This is to ensure that clinicians have up-to-date practical guidelines that keep pace with how quickly the field is evolving. Brittany Harvey: Absolutely. As you mentioned, this is a very fast-moving space and this full update helps condense all of those versions that the panel reviewed before into one document, along with additional approvals and new trials that you reviewed during this time period. So then, the first aspect of the guideline is there's a new overarching recommendation on biomarker testing. Could you speak a little bit to that updated recommendation? Dr. Sonam Puri: Yeah, definitely. So the panel has discussed and provided recommendations on comprehensive biomarker testing and its importance in all patients diagnosed with non-small cell lung cancer. Ideally, biomarker testing should include a broad-based next-generation sequencing panel, rather than single-gene tests, along with immunohistochemistry for important markers such as PD-L1, HER2, and MET. These results really drive treatment decisions, both in frontline settings for all patients diagnosed with non-small cell lung cancer and in subsequent line settings for patients with non-small cell lung cancer harboring certain targetable alterations. Specifically in the frontline setting, it helps determine whether a patient should receive upfront targeted therapy or immunotherapy-based approach. We now have strong data that shows that complete molecular profiling results before starting first-line therapy is associated with better overall survival and actually more cost-effective care. Using both tissue and blood-based testing can improve likelihood of getting actionable results in a timely way, and we've also provided guidance on platforms that include RNA sequencing, which are specifically helpful for identifying gene fusions that might be otherwise missed with other platforms. On the flip side, outside of a truly resource-limited setting, single-gene PCR testing really should not be routine anymore. This is what the panel recommends. It's less sensitive and inefficient and increases the risk of missing important actionable alterations. Brittany Harvey: Understood. I appreciate you reviewing that recommendation. It really helps identify critical individual factors to match the best treatment option to each individual patient. So then, following that recommendation, what are the updated recommendations on first-line therapy for patients with stage IV non-small cell lung cancer with a driver alteration? Dr. Sonam Puri: Since the last full update in 2024, there have been four additional interim updates which were published across 2024 and 2025. Compared to the last version, there have been several updates which have been included in this full update. One of the most important shifts has been in first-line treatment of patients with non-small cell lung cancer harboring the classical, or what we call as typical, EGFR mutation. The current version of the recommendation is based on the updated survival data from the phase III FLAURA2 and MARIPOSA studies, based on which the panel recommended to offer either osimertinib combined with platinum-pemetrexed chemotherapy or the combination of amivantamab plus lazertinib in the first-line treatment of classical EGFR mutations. And these recommendations, as I mentioned, are grounded in the results of the FLAURA2 and MARIPOSA trials, both of which demonstrated improvement in progression-free survival and overall survival compared to osimertinib alone in patients with common EGFR mutations. That being said, the panel actually spent significant time discussing the toxicities associated with these treatments as well. These combination approaches come with higher toxicity, longer infusion time, increased treatment frequency. So while combination therapy is now recommended as preferred, the panel has recommended that osimertinib monotherapy remains a reasonable option, particularly for patients with poor performance status and for those who are not interested in treatment intensification after knowing the risks and benefits. Brittany Harvey: Absolutely. It's important to consider both those benefits and risks of those adverse events that you mentioned to match appropriately individualized patient care. So then, beyond those recommendations for first-line therapy, what is new for second-line and subsequent therapies? Dr. Sonam Puri: So this is a section that saw several major updates, particularly again in the EGFR space. The first was an update on treatment after progression on osimertinib for patients with classical EGFR mutation. Here the panel recommends the combination of amivantamab plus chemotherapy, and this recommendation was based on the phase III MARIPOSA-2 trial, which compared amivantamab plus chemotherapy with chemotherapy alone with progression-free survival as the primary endpoint. The study met its primary endpoint, showing an improvement in median PFS with the combination of amivantamab plus chemotherapy compared to chemotherapy alone. And as expected, the combination was associated with higher toxicity. So, although the panel recommends this regimen, the panel emphasizes that patients should be counseled on the side effects which may be moderate to severe with the combination therapy approach. In addition, a new recommendation was added for patients who are not candidates for amivantamab plus chemotherapy. In those cases, platinum-based chemotherapy with or without continuation of osimertinib may be offered, and the option of continuing osimertinib with chemotherapy was recommended and supported by data from a recently presented phase III COMPEL study, which randomized 98 patients with EGFR exon 19 deletion or L858R-mutated advanced non-small cell lung cancer who had experienced no CNS progression on first-line osimertinib, and these patients were randomized to receive platinum-pemetrexed chemotherapy with osimertinib or placebo. Although this study was small, it demonstrated a PFS benefit with continuation of osimertinib with chemotherapy, and this approach may be appropriate for patients without CNS progression who prefer or require alternatives to more intensive treatment strategies. Next was an update on options for patients with EGFR-mutated lung cancer after progression on osimertinib and platinum-based chemotherapy. Here the panel recommended that for patients whose disease has progressed after both osimertinib and platinum-based chemotherapy, a new drug known as datopotamab deruxtecan can be offered as a treatment option. And this treatment recommendation was based on evaluation of pooled data from the TROPION-Lung01 and TROPION-Lung05 study, in which in the pooled analysis about 114 patients with EGFR-mutant non-small cell lung cancer were treated with Dato-DXd, 57% of whom had received three or more prior lines of treatment, and what was observed was an overall response rate of 45% with a median duration of response of 6.5 months. So definitely promising results. Next, we focused on updates to subsequent therapy options for patients with another type of EGFR mutation known as EGFR exon 20 insertion mutations. In this section, the panel added sunvozertinib as a subsequent line option after progression on platinum-based chemotherapy with or without amivantamab. Sunvozertinib is an oral, irreversible, and selective EGFR tyrosine kinase inhibitor with efficacy demonstrated in the phase II WU-KONG6 study conducted in Chinese patient population. In this study, amongst 104 patients with platinum-pretreated EGFR exon 20 mutated non-small cell lung cancer, the observed response rate was 61%. Staying in the EGFR space, the panel added a recommendation for patients with acquired MET amplification following progression on EGFR TKI therapy. In these situations, the panel recommended that treatment may be offered with osimertinib in combination with either tepotinib or savolitinib. As our listeners may know, MET amplification occurs in approximately 10% to 15% of patients with EGFR-mutated non-small cell lung cancer when they progress on third-generation EGFR TKIs, and detection of MET amplification is done with various methods, such as tissue-based methods like FISH, NGS, and IHC, as well as ctDNA-based NGS with variable cut-offs. Over the last few years, several studies have informed this recommendation. I'm going to be discussing some of them. In the phase II ORCHARD trial, 32 patients with MET-amplified non-small cell lung cancer after progression on first-line osimertinib were evaluated, where the combination of osimertinib plus savolitinib achieved an overall response rate of 47% with a duration of response of 14.5 months. More recently, the phase II SAVANNAH trial reported outcomes in 80 patients with MET-amplified tumors after progression on osimertinib, and in this patient population, the combination of savolitinib and osimertinib achieved an overall response rate of 56% with a median PFS of 7.4 months. And lastly, the phase II single-arm INSIGHT 2 trial assessed the efficacy of osimertinib plus tepotinib in patients with advanced EGFR-mutant non-small cell lung cancer who had disease progression following first-line osimertinib therapy. And in this study, in a cohort of 98 patients with MET-amplified tumors confirmed by central testing, the overall response rate with the combination was 50% with a duration of response of 8.5 months. So definitely informing this guideline recommendation. Next, we had an update on recommendation in patients with ROS1-rearranged non-small cell lung cancer. For patients with ROS1-rearranged non-small cell lung cancer, the panel recommended specifically for patients who progressed after first-line ROS1 TKIs, the addition of taletrectinib as a new option alongside repotrectinib. And this recommendation was based on analysis of the results of the TRUST-I and TRUST-II studies, which showed that amongst 113 tyrosine kinase inhibitor-pretreated patients, taletrectinib achieved a confirmed overall response rate of 55.8% with a median duration of response of 16.6 months and a median PFS of 9.7 months, a very promising agent. Finally, for patients with HER2 exon 20 mutated non-small cell lung cancer, the panel added two new oral HER2 tyrosine kinase inhibitors, zongertinib and sevabertinib, as options in addition to T-DXd and after exposure to T-DXd. These recommendations are based on early phase data from two trials: the phase I Beamion LUNG-01 study, which evaluated zongertinib, and the phase I/II SOHO-01 study that evaluated sevabertinib. In this study, zongertinib demonstrated an overall response rate of 71% in previously treated patients, with an overall response rate of 48% amongst patients who had received prior HER2-directed ADCs including T-DXd. Sevabertinib in its early phase study showed an overall response rate of 64% in previously treated but HER2 therapy-naive patients, and an overall response rate of 38% in patients previously exposed to HER2-directed therapy. The panel believes that both agents had manageable toxicity profile and represent meaningful new options for this patient population. Brittany Harvey: Certainly, it's an active space of research, and I appreciate you reviewing the evidence underpinning all of these recommendations for our listeners. So, it's great to have these new options for patients in the later-line settings. And given all of these updates in both the first and the later-line settings, what should clinicians know as they implement this latest living guideline update, and how do these changes impact patients with non-small cell lung cancer? Dr. Sonam Puri: Some great questions, Brittany. I think for clinicians when implementing this update, I think about two practical steps. First is reiterating the importance of comprehensive biomarker testing. That is the only way to identify key drivers and resistance mechanisms that we are now targeting. And second, picking a first-line strategy that balances efficacy and toxicity and patient preference for your specific patient. I think informed decision-making, shared decision-making is more important than any time right now. It has always been important, but definitely very important now. For patients, this guideline brings recommendations on more personalized treatment options for both first-line and post-progression settings, which potentially means better outcomes. But it is also very important for our patients to continue to have informed conversations about side effects, time commitment, and what matters most to them with their providers. The panel in this version of the guideline specifically acknowledges the real-world barriers that prevent patients from receiving guideline-concordant therapy, including challenges with access to comprehensive molecular testing and treatment availability, and the panel emphasizes on the importance of shared decision-making, and we provide practical discussion points to help clinicians navigate these conversations with the patient. In addition, the panel has also addressed common real-world clinical complexities, such as treating elderly or frail patients, managing multiple chronic conditions, considerations around pregnancy and fertility, and certain disease scenarios such as oligoprogression or oligometastatic disease. And where available, the guideline summarizes this existing data to support informed individual decision-making in these complex situations. Brittany Harvey: Shared decision-making is really paramount, especially with all of the options and weighing the risks and benefits and considering the individual circumstances of each patient that comes before a clinician. We've talked a lot about all of the new studies that the panel has reviewed, but what other studies or areas of research is the panel examining for future updates to this living guideline as it continues to be updated on an ongoing basis? Dr. Sonam Puri: Yes, definitely, so much to look forward to, right? Looking ahead, the panel is closely monitoring several rapidly evolving areas that are likely to shape future updates of the guideline. This includes emerging data from ongoing later-phase studies, particularly the studies that are evaluating these new targeted agents moving to earlier lines of therapy, alongside studies evaluating additional combination strategies or more refined approaches to treatment sequencing. We're also closely watching advances in biomarker testing, the evolving understanding of resistance mechanisms, development of new targets, and promising therapeutic agents. I think ultimately the living guideline exists to help clinicians and patients navigate this rapidly evolving field, and we would like to ensure that scientific advances are rapidly translated into better, more personalized patient care. Brittany Harvey: Definitely. We'll look forward to those updates from those ongoing trials and future areas of research that you mentioned to provide better options for patients with non-small cell lung cancer and a driver alteration. So I want to thank you so much for your work to rapidly and continuously update this guideline, and thank you for your time today, Dr. Puri. Dr. Sonam Puri: Thanks so much. Thanks so much for the opportunity. Brittany Harvey: And finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/thoracic-cancer-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines app available in the Apple App Store or the Google Play Store. There's also a companion episode with Dr. Reuss on the related living guideline on stage IV non-small cell lung cancer without driver alterations that listeners can find in their feeds as well. And if you've enjoyed what you've heard today, please rate and review the podcast and be sure to subscribe so you never miss an episode. 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.

Dr. Joshua Reuss is back on the podcast to discuss the full update to the living guideline on stage IV NSCLC without driver alterations. He discusses the new evidence and how this impacts the latest recommendations on first-line and subsequent therapeutic options. Dr. Reuss emphasizes the need for shared decision-making between clinicians and patients. He shares ongoing research that the panel will review in the future for further updates to this living guideline, and puts the updated recommendations into context for clinicians treating patients with stage IV NSCLC. Read the full living guideline update "Therapy for Stage IV Non-Small Cell Lung Cancer Without Driver Alterations: ASCO Living Guideline, Version 2026.3.0" at www.asco.org/thoracic-cancer-guidelines" TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/thoracic-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-25-02825 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. Joshua Reuss from Georgetown University, co-chair on "Therapy for Stage IV Non-Small Cell Lung Cancer Without Driver Alterations: ASCO Living Guideline, Version 2026.3.0." It is great to have you back on the show today, Dr. Reuss. Dr. Joshua Reuss: Happy to be here, Brittany. Brittany Harvey: 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. Reuss 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. Dr. Reuss, this living clinical practice guideline for systemic therapy for patients with stage IV non-small cell lung cancer without driver alterations is updated on an ongoing basis. So, what prompted this latest update to the recommendations? Dr. Joshua Reuss: Our committee is tasked with making routine updates to the living guidelines and really keeping them living, right? So, evaluating new data as it is coming in to see, is this practice changing? Is this data that should inform and potentially alter our guideline recommendations so that practitioners and other care providers could really make the best treatment decisions for their patients? So that is something that happens on a more routine basis, but periodically, we are tasked with performing a more comprehensive update of our guideline where we really evaluate every one of our point recommendations, the data associated with these recommendations, to be sure that these are up to date, these are comprehensive, and to see if we need to alter anything in the language of these updates. Brittany Harvey: Excellent. Thank you for providing that background. And yes, this is truly a comprehensive update that goes through all the latest literature. Given that, I would like to review what has changed and what is new in the recommendations. So, what are the updated recommendations on first-line therapy for patients with stage IV non-small cell lung cancer without driver alterations? Dr. Joshua Reuss: So there are two main guidelines that we recommend from this panel. One is a driver mutation-positive guideline and the other is a driver mutation-negative guideline. And I think on first blush, one might look at kind of the recent flurry of approvals and new data and say, well, all the excitement, you know, is in the driver mutation-positive guideline. But I would say that the driver mutation-negative guideline is equally as important and really has several unique challenges associated with it. You know, first and foremost is that there are really a multitude of regimens that can be considered for any one patient. And how to choose between one can be quite difficult and a stressful challenge that clinicians can have, particularly since there are really no randomized studies comparing these regimens in a head-to-head fashion. In addition, you know, these guidelines are really broken down by two key factors. One is disease histology, so namely squamous versus non-squamous histology. And the other is PD-L1 status, broken down into one of three tertiles: PD-L1 high, which is greater than or equal to 50% expression; PD-L1 low, which is 1% to 49% expression; and then PD-L1 negative or unknown. So what you are really looking at, if you do that math, is really six unique patient subpopulations where we need to make a recommendation on one of the multitude of treatment regimens that is approved. And what that means is you are oftentimes really looking at subset and sub-subset level data to help inform clinicians in their treatment decision making, which can be quite challenging because as those small subsets of data is more and more parsed, there are many confounders that can be interjected there. And so I think the committee is tasked with really quite a challenge in terms of how to really communicate and broadcast that data in a way that informs clinicians in making a decision on what is the right treatment for their patient. Brittany Harvey: Absolutely. It can be challenging to interpret that subgroup data across several different studies that are reporting on different regimens and different outcomes. And I appreciate you mentioning the driver mutation-positive guideline as well. Listeners can check out the companion episode with Dr. Puri for more information on what is changed in the driver mutation-positive guideline. Based on that primer, what is new for first-line therapy for patients with stage IV non-small cell lung cancer without driver alterations? Dr. Joshua Reuss: Even though I will say there is not a lot of new trial data that was incorporated into this guideline, there were some updates and just some meaningful long-term data that we incorporated. I think first and foremost, there is a new top-level recommendation in this guideline pertaining to molecular testing, which is absolutely critical in both the driver mutation-positive and driver mutation-negative space. I think we tend to think that, oh, well, molecular testing really only pertains to then finding a driver mutation. But the lack of a mutation is absolutely critical as well, right? Because that is what leads us down the mutation-negative pathway. We also need this molecular testing to assess PD-L1 status. We are seeing emerging data on molecular mutations that might confer resistance to certain immunotherapy-based strategies. So the committee felt strongly that a recommendation on molecular testing is critical to include in both the driver mutation-positive guideline and the driver mutation-negative guideline. I will also say that we are now seeing five and six-year updates from some of the landmark trials of immunotherapy in driver mutation-negative non-small cell lung cancer. It is really incredible to see that in some of these trials, we are seeing very impressive durability of the treatment in the patient subsets that we are commenting on. In others, perhaps that durability is less clear, and I think that leads to challenges in making a recommendation on any one particular regimen. And I think that is nowhere more clear than in the squamous subset. I think that was one perhaps subtle change that is in this guideline where, particularly in the PD-L1 negative squamous population, the committee felt that no one regimen really was worthy of standing above the others. Sometimes I think it is important to really champion one unique regimen if we feel that the data is there to support it. But I think it is equally important to list multiple regimens where the data is less clear. I think another point is that while perhaps there were no new regimens that we have added or that led to other clear changes in the prioritization of one regimen over another, there are other unique data subsets that I think come into play in making a decision and that really are important when looking at the discussion on any one recommendation from this guideline. For example, we know there is emerging data on perhaps the significance of molecular alterations in KEAP1 or STK11 and how that might influence frontline decision-making. You know, there is not a prospective phase III trial in this population, but I think we still need to use that data in certain scenarios to make recommendations for a particular patient. Another example of a trial that, again, did not change our recommendations, but I think one can incorporate in their decision making is the KEYNOTE-598 trial. Now, this is not a new study, but what it studied was pembrolizumab versus pembrolizumab plus ipilimumab in a PD-L1 high subset, and found that the addition of ipilimumab to pembrolizumab in the PD-L1 high population did not significantly improve clinical efficacy. And so while pembrolizumab plus ipilimumab is not an approved regimen, it is hard to extrapolate that to our combination treatments that are approved. I think some clinicians might find that data valuable when making a frontline treatment decision on a patient who has PD-L1 high status. So a bit of a whirlwind tour, but I think there are still multiple factors that went into this guideline that are important to review when making treatment decisions for any one patient. Brittany Harvey: Absolutely. I think what you just mentioned in having that upfront molecular testing is really key for individualized patient care. And the evidence summaries that you provide in addition to the recommendations are really important for clinicians to be able to refer to as they are making decisions in their clinic. So then beyond those changes for first-line therapy, what is updated for second-line and subsequent therapies? Dr. Joshua Reuss: For second-line and subsequent therapies, we did see one new treatment recommendation join these ranks, and that was telisotuzumab vedotin. Telisotuzumab vedotin, quite a mouthful. That is an antibody-drug conjugate. I like to think of that as smart chemotherapy, targeted chemotherapy, where you are trying to utilize some aspect of a marker that is selectively expressed or overexpressed on the cancer surface to then shepherd in the anticancer molecule, a highly potent chemotherapeutic in the case of currently approved antibody-drug conjugates, to exert antitumor killing effect. So in this case, the antibody-drug conjugate telisotuzumab vedotin targets MET overexpression. So telisotuzumab is an antibody targeting MET, and that is conjugated to an MMAE highly potent chemotherapeutic payload called vedotin. So we know MET can be selectively expressed and overexpressed in non-small cell lung cancer in both driver mutation-positive and mutation-negative subsets. The data that led to this approval was from the phase II LUMINOSITY trial which evaluated telisotuzumab vedotin, or Teliso-V, in many subsets. But the subset that really showed promise and was expanded was the EGFR wild-type, non-squamous, non-small cell lung cancer population with MET overexpression. And so in 78 patients with high levels of expression, the response rate here was 34.6%, median progression-free survival of 5.5 months, and a median overall survival of 14.6 months. With an overall acceptable safety profile; grade 3 or higher adverse events, neuropathy was perhaps the most common at 7%, also increased ALT at 3.5%, and pneumonitis at 2.9%. Now this was phase II data that led to an accelerated approval. There is an ongoing phase III study randomizing patients with high expression to Teliso-V versus docetaxel. That is the phase III TeliMET study. But it is nice that we now have another option for patients, perhaps a more biomarker-directed option with, again, this MET overexpression. And again, it further reinforces the importance of molecular testing in patients with traditionally driver mutation-negative non-small cell lung cancer, whether that is upfront or at progression, and in particular utilizing immunohistochemistry to assess MET expression in these patients. And this does join another ADC that we had previously made an update in our recommendation, which is trastuzumab deruxtecan, which is approved for those patients with HER2-overexpressing non-small cell lung cancer. So just again to reiterate the importance of molecular testing in patients both at the outset of their treatment and upon progression on frontline therapy. Brittany Harvey: Definitely. It is great to have this new antibody-drug conjugate join the treatment options, and as you mentioned, very important in this case to have that molecular testing done at the outset and at progression. So then in your view, what should clinicians know as they implement this living guideline, and how do these changes impact patients with non-small cell lung cancer? Dr. Joshua Reuss: Because there are so many different regimens that one can consider for any one patient, I think it is easy to become overwhelmed and stress on, "Am I making the right choice for my patient?" And I think one of the key take home points is that in many cases, there is no one right regimen. And I think one has to weigh several factors. It is the treatment schedule. It is the toxicity profile. It is the molecular profile of the patient. It is the patient preference. You know, there are so many factors here. And I would like to draw the reader and viewer's attention to an important section of these guidelines, particularly the Patient and Clinician Communication section, where we have a box focused on discussion points between patients and clinicians, which I think focuses on several of the high-level points that one can emphasize in making these decisions, ranging on things from: what are the goals of the treatment? What are the risks and benefits to any one approach? What are comorbidities that should be factored in? Common concerns, toxicity management, clinical trial consideration. All of these factors that I think are incredibly important in making that frontline treatment decision and implementing a regimen that both the clinician and, more importantly, the patient feels comfortable with. Brittany Harvey: It is really important that there is shared decision-making in these scenarios. And I think that patient-clinician communication section can tease out some of those preferences from the patient end and talk through the risks and benefits of different regimens as well. As we mentioned at the top of this episode, this guideline is a living guideline and updated on an ongoing basis. So what is the panel examining and keeping an eye on for future updates to this guideline? Dr. Joshua Reuss: So I think there are a lot of exciting new therapies and more up-to-date trials that we are anxiously awaiting the results of on our committee, and I think the oncology community in general is awaiting the results of. When we will have these results, I think, is a bit of an open-ended question, but I can give some insight on several of the trials that our committee is really keeping a close eye on. One that we have mentioned for several guideline iterations is the ECOG-ACRIN INSIGNA trial. This is a phase III clinical trial comparing pembrolizumab versus pembrolizumab plus carboplatin and pemetrexed chemotherapy in PD-L1 positive, non-squamous, non-small cell lung cancer. We talk about there being different regimens that can be considered in PD-L1 positive and PD-L1 high subsets, namely immunotherapy alone or immunotherapy plus chemotherapy, but there is no direct head-to-head comparison here. So this trial hopefully will answer that question. It has now finished accrual. There are other very interesting molecules and trials. I think another interesting compound is ivonescimab. This is a PD-1/VEGF bispecific antibody that is currently approved in China as monotherapy in patients with PD-L1 positive non-small cell lung cancer based off of the HARMONi-2 trial, where the progression-free survival of this bispecific antibody, ivonescimab, appeared superior to pembrolizumab. And we are looking closely at ongoing trials to see if these results will be replicated in an ex-China population. And if so, I think it could have a real impact and change on our guidelines. Still other very interesting things. There are obviously confirmatory studies for antibody-drug conjugates, such as the TeliMET study that I alluded to earlier, and many promising antibody-drug conjugates, both bispecific and trispecific antibody-drug conjugates, that hopefully can inform practice. And then there are several unique subsets of populations that I think we now are utilizing data on to make decisions, but a lot of that is retrospective in small subsets where we do not have that prospective data. And there are several trials ongoing in some of these subsets to try to gain clarity on what regimen may be the best for patients. One example is the phase III TRITON trial, which is looking at comparing CTLA-4 containing regimen, particularly the POSEIDON regimen of durvalumab plus tremelimumab and chemotherapy, versus the KEYNOTE-189 regimen, which is pembrolizumab plus carboplatin and pemetrexed, in patients with non-squamous, non-small cell lung cancer that have alterations in either KRAS, KEAP1, and/or STK11. There is a lot of both preclinical and clinical data to suggest that patients with these alterations in STK11 and KEAP1 may be more resistant to a PD-1 based treatment approach, and perhaps the incorporation of CTLA-4 can lead to a more meaningful response in this unique subset. Obviously, that data, it is retrospective, it is in small subsets. And when you add in a CTLA-4 molecule, you are also introducing greater risk for toxicity. So this trial is going to be very important in elucidating: is there a benefit in that unique subset? Does that data that we see retrospectively in this small subset hold true when evaluated in a prospective fashion? So while our guideline, our most recent comprehensive panel update, may not have had a lot of new data in it that has influenced frontline treatment decision-making, I think the future is bright and there are a lot of novel studies and novel treatments on the horizon that will hopefully improve the outcomes for our patients. Brittany Harvey: Absolutely. We will look forward to the results of those ongoing trials to provide more options and particularly clarity for patients with non-small cell lung cancer and to inform this guideline and its many updates to come. So I want to thank you so much for your work to rapidly and continuously update this guideline, and thank you for your time today, Dr. Reuss. Dr. Joshua Reuss: Thank you so much. Brittany Harvey: And finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/thoracic-cancer-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines App available in the Apple App Store or the Google Play Store. If you have enjoyed what you have heard today, please rate and review the podcast and be sure to subscribe so you never miss an episode. 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.

Dr. Mary-Ellen Taplin joins the podcast to discuss the latest changes to the living guideline on metastatic castration-resistant prostate cancer (mCRPC). She reviews new treatment options for patients treated with ADT alone, ADT and an ARPI, ADT and docetaxel, and ADT, an ARPI, and docetaxel whose disease has progressed to mCRPC and the evidence that underpins these changes. Dr. Taplin highlights the updated algorithms within the guideline and the living format which will provide rapid, up-to-date, evidence-based information for clinicians and patients. Read the full living guideline update, "Systemic Therapy in Patients With Metastatic Castration-Resistant Prostate Cancer: ASCO Living Guideline, Version 2026.1." at www.asco.org/genitourinary-cancer-guidelines TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/genitourinary-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-25-02693 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. Mary-Ellen Taplin from Dana-Farber Cancer Institute, lead author on "Systemic Therapy in Patients With Metastatic Castration-Resistant Prostate Cancer: ASCO Living Guideline, Version 2026.1." Thank you for being here today, Dr. Taplin. Dr. Mary-Ellen Taplin: Thank you, Brittany. It is a pleasure. Brittany Harvey: 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. Taplin 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. To dive into the content here and what we are here today to talk about, this living clinical practice guideline for systemic therapy for patients with metastatic castration-resistant prostate cancer is updated on an ongoing basis. Dr. Taplin, what prompted this latest update to the recommendations? Dr. Mary-Ellen Taplin: Thank you, Brittany. Several things prompted the latest update. There have been several phase III trials that have been practice-changing that have resulted in the last several years that needed to be added to the guidelines to inform clinicians of comprehensive treatment options. Brittany Harvey: Great, and it is great to have this updated guideline for readers. I would like to review the changes to the recommendations in this latest iteration across the patient populations that are outlined in the guideline. So, starting with: What are the updated recommendations for patients previously treated with androgen deprivation therapy alone whose disease has progressed to metastatic castration-resistant prostate cancer? Dr. Mary-Ellen Taplin: A nice feature of this guideline is that in addition to the tables, which provide detailed options, is at the end of the guidelines, our readers will find very clear algorithms that describe past treatment scenarios that patients could have had and then outline their treatment options. So it is very clear. Our clinicians will love these algorithms. And one of the changes for the disease state that you mentioned, which is the least treated castration-resistant state of prostate cancer which is previously treated with ADT alone, is that we recommend testing for mutations in the HRR, homologous recombination repair, genes. And the ones that are specifically known and applicable to prostate cancer are the BRCA genes. So there is clear recommendation of testing to remind us, as treating physicians, that now is the time, if it hasn't been done before, to institute both germline and somatic testing. And somatic testing, if it can be done on tissue, is preferable, but if not, the liquid biopsy approaches, the ctDNA approaches, have now advanced to the point that most patients with metastatic prostate cancer will be able to successfully have testing on the liquid biopsies. So that is number one, testing. And then the new treatment options include, if a patient does have an HRR gene alteration, and maybe about 20-25 percent of patients will be in that category, the combinations of an androgen pathway inhibitor and a PARP inhibitor are now treatment options. So for instance, talazoparib and enzalutamide; olaparib and abiraterone; or niraparib and abiraterone are some of the newer treatment options if the patient is HRR-positive. So, Brittany, in regard to patients treated with ADT alone, another new treatment option is the combination of radium-223 with enzalutamide. This is data based on the PEACE-3 trial which did show both an rPFS and OS benefit. For the patient who is HRR-negative and has previously not had an ARPI, just ADT alone, the combination of radium and enzalutamide is a new recommendation added to the algorithm. Brittany Harvey: Great. Thank you for reviewing those options for that patient population. And as you mentioned, I think those algorithms are very helpful as figures in the document. They are clear and can be used as at-a-glance tools for clinicians in their busy clinics. So then the next patient population that the guideline addresses: What is new for patients previously treated with androgen deprivation therapy and an androgen receptor pathway inhibitor whose disease has now progressed to metastatic castration-resistant prostate cancer? Dr. Mary-Ellen Taplin: Right, so there are several new treatment options. So one is lutetium-PSMA-617, the trade name of which is Pluvicto. So that has now been FDA approved to use after progression on an AR pathway inhibitor and prior to the use of docetaxel chemotherapy. Brittany Harvey: Thank you for reviewing that new option for patients treated with androgen deprivation therapy and an ARPI whose disease has progressed. So then moving into the next set of recommendations, what does the panel now recommend for patients previously treated with androgen deprivation therapy and docetaxel whose disease has progressed to metastatic castration-resistant prostate cancer? Dr. Mary-Ellen Taplin: The next group of patients is those treated with ADT and docetaxel but haven't had an AR pathway inhibitor. Treatment options, again the HRR testing is important. So all patients with metastatic castration-resistant prostate cancer should be considered for both germline and somatic testing. I will repeat that. And if they are BRCA mutation positive, then the option of talazoparib and enzalutamide; olaparib and abiraterone; and niraparib and abiraterone. So the AR pathway inhibitors plus the PARPs. There are three choices, so that can be somewhat complicated to think through, but most practitioners will get familiar with one of those combinations and be their go-to. So those are for BRCA-positive or HRR-positive. The talazoparib/enzalutamide trial also included non-BRCA HRR-positive gene mutations. And if they are HRR-negative, the option that we discussed above of radium and enzalutamide is new to the guideline. Brittany Harvey: Great. And then the last category of patients that is addressed in this update: What has changed for patients previously treated with androgen deprivation therapy, an androgen receptor pathway inhibitor, and docetaxel whose disease has now progressed to metastatic castration-resistant prostate cancer? Dr. Mary-Ellen Taplin: Well, in this space, patients who are heavily pretreated with ADT and ARPI, one or even two, and chemotherapy, generally with docetaxel, the recommendations are not new within the last year or two. And they include Pluvicto; a PARP inhibitor if HRR-positive and they have not had one; second-line chemotherapy such as cabazitaxel. And if they are a very rare group and they have been sequenced and they are MSI-high, then considering a PD-1 inhibitor such as pembrolizumab can be considered. I will note that this is a very small percentage of mCRPC patients, probably in the order of 5 percent or less. Brittany Harvey: Understood. And I appreciate you reviewing the recommendations across all of these patient populations. It sounds like some of the key points is that HRR testing is very important for this patient population, and that the algorithms and the tables in the manuscript provide the full list of options that clinicians and patients can refer to. Dr. Mary-Ellen Taplin: Those are the highlights. And I will note in the tables, all the sections have "Special Considerations" sections because patients never fall into the black and white of one category. And those practical information or special situations sections of each of the recommendations can also help clinicians think about the individual patient in front of them and how they might choose one therapy over another since there are generally choices in all of these treatment situations. Brittany Harvey: Absolutely. That information for the individualized patient-clinician decision-making is really key when, as you said, there is a list of options to choose from. So in your view, what should clinicians know as they implement this living guideline update, and how do these changes impact patients? Dr. Mary-Ellen Taplin: I am so excited about this living document. ASCO has invested to developing the software to, in real time and iteratively, assess the new data that is published in prostate cancer and other diseases. So now we don't have to wait many years for the next guideline to come out. The guidelines will be updated every six months in prostate cancer based on this automatic search of the literature and a standing panel of both academic and community experts in prostate cancer treatment. So we no longer have to wait. That is what makes this guideline stand out to other guidelines. And in the digestible format that we have made, a clinician can seek out the table and read some details, seek out practical information for the recommendations, or they can just go right to the clear figure algorithm and take a quick snapshot. "Yep, I need to do HR testing. Done. Oh, okay. HR-positive or negative, these are my options," and then think about the individual patient in front of them when there is more than one option. For instance, a patient with cardiovascular history, abiraterone might not be a good choice for them. Or a patient with neuropathy, docetaxel might not be a good choice for them. But, within this guideline, it really will be up to date and focused on the busy clinician and knowing what the options are for their patient. Brittany Harvey: Definitely. This new era of living guidelines is very exciting and can provide even more up-to-date, evidence-based recommendations to really support clinicians and patients with metastatic castration-resistant prostate cancer. So in that vein, finally, what is the panel examining, and what are you excited for for new data coming out for future updates to this living guideline? Dr. Mary-Ellen Taplin: The future updates will depend on the results of phase III clinical trials. You know, there are many phase III trials ongoing in advanced prostate cancer, some of which include targeted therapy, which has been long awaited in prostate cancer. So such compounds as antibody-drug conjugates that are targeting certain proteins in prostate cancer cells, such as STEAP1, KLK2, B7-H3. So I think we are entering a new era in prostate cancer where we will be targeting cells and delivering drugs and applying them to prostate cancer if the trials are positive. So I think with AI and a large investment in prostate cancer clinical drug development, I think the treatment options for our patients will be rapidly evolving in a manner not previously seen. So the guidelines need to follow along with these developments. Brittany Harvey: Definitely. It sounds like an exciting time for research in metastatic castration-resistant prostate cancer. And we will await the result of those phase III trials to inform this guideline and lead to future updates. So I want to thank you so much for your work to rapidly and continuously update these guidelines and for your time today, Dr. Taplin. Dr. Mary-Ellen Taplin: Oh, it was my pleasure. ASCO has been a leader in this area, and as a practicing clinician, we are thankful for the investment and guidance that ASCO gives us. Brittany Harvey: Absolutely. And finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/genitourinary-cancer-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines App, available in the Apple App Store or the Google Play Store. If you have enjoyed what you have heard today, please rate and review the podcast, and be sure to subscribe so you never miss an episode. 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.

Dr. Lisa Hicks and Dr. Joseph Mikhael discuss the updated guideline from ASCO and Ontario Health (Cancer Care Ontario) on the treatment of multiple myeloma. They cover recommendations for therapeutic options across smoldering multiple myeloma, transplant eligible multiple myeloma, transplant ineligible multiple myeloma, and relapsed or refractory multiple myeloma. They highlight the importance of shared decision making and patient-centric care. They comment on the explosion of new treatment options in this space and the impetus for this guideline becoming a living guideline, which will be updated on an ongoing, regular basis. Read the full guideline, "Treatment of Multiple Myeloma: ASCO-Ontario Health (Cancer Care Ontario) Living Guideline" at www.asco.org/hematologic-malignancies-guidelines. TRANSCRIPT This guideline, clinical tools and resources are available at www.asco.org/hematologic-malignancies-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-25-02587 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. Lisa Hicks from St. Michael's Hospital and University of Toronto, and Dr. Joseph Mikhael from the Translational Genomics Research Institute, an affiliate of City of Hope Cancer Center, co-chairs on "Treatment of Multiple Myeloma: American Society of Clinical Oncology-Ontario Health (Cancer Care Ontario) Living Guideline." Thank you for being here today, Dr. Hicks and Dr. Mikhael. Dr. Lisa Hicks: Thanks so much. Dr. Joseph Mikhael: It is a pleasure to be with you, Brittany. Thank you. Brittany Harvey: 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. Hicks and Dr. Mikhael 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. Mikhael, I would like to start by recognizing that this guideline updates the 2019 ASCO-CCO Guideline on the Treatment of Multiple Myeloma. So what prompted this update and what is the scope of this updated guideline? Dr. Joseph Mikhael: It is amazing when we think back in myeloma years, 2019 actually seems a very, very long time ago because really so much has changed in myeloma over these last six to seven years. Indeed, there have been over 150 randomized controlled trials that we didn't have at the prior guideline that we reviewed for this. Myeloma is a disease that has really changed so dramatically over these last several years. Multiple new agents have been introduced. We now have CAR-T cell therapy, bispecific antibodies, and multiple other agents that were not available at the time. Furthermore, with this growing complexity, it is becoming more important than ever to be able to provide practical advice and guidelines to the oncology community. For most oncologists, they have less than 5% of their time dedicated to multiple myeloma. It is important to bring a clarity to them that allows them to care for their patients. And the scope of these guidelines, furthermore, really cover the whole spectrum of myeloma. They go further than our prior guideline where now we have included smoldering multiple myeloma along with frontline therapy and relapsed multiple myeloma. So, we have really tried to provide the full spectrum to our colleagues in oncology to ensure that they have the tools they need to provide the best care possible for their patients. Dr. Lisa Hicks: That is a really terrific summary. And maybe one thing I will just add is it is really unique to have this much literature. I can't think of another guideline that I have ever been involved with that has seen a field move so quickly and develop so many advancements in a period of just over four or five years. Brittany Harvey: Certainly, there is a large volume of evidence that you all had to review for this guideline update. I think to your point probably one of the greater volumes of literature for a guideline update that you both mentioned. Based on that, I would like to review the key recommendations that are updated in this guideline. So Dr. Hicks, that new patient population that Dr. Mikhael mentioned earlier, what are the key recommendations for patients with smoldering multiple myeloma? Dr. Lisa Hicks: So this is the first time that an ASCO guideline is addressing this branch of multiple myeloma care. It is an area where I think some guidance is needed, and smoldering myeloma is not an active cancer. And so one thing that I really want to highlight is that the panel felt very strongly that to recommend any therapy in this space we needed a higher level of evidentiary certainty, of evidentiary confidence, to make recommendations for active therapy. The panel really made two very important recommendations. First of all, the panel did not recommend treatment for low or intermediate risk smoldering myeloma. That is important. And then the area where I think for the first time we have recommended consideration of treatment is patients with high risk smoldering myeloma. And for patients with high risk smoldering myeloma, the panel recommended that it was appropriate to consider either treatment with daratumumab or careful observation. Dr. Joseph Mikhael: And I think that move forward as you have mentioned, Dr. Hicks, is particularly important because it is an area to some degree still of equipoise and many trials are going on in the area. But we do now have a strong phase III trial that supports the use of daratumumab monotherapy for three years when compared to close observation. But of course, that is not for everyone. And one of the key themes of all of our recommendations are going to be now that more and more choices are available, that we have discussions with our patients to ensure that we match the right treatment with the preference of the patient. And I think that is particularly important here in smoldering myeloma. Dr. Lisa Hicks: Multiple myeloma care and the multiple myeloma evidence is really so nuanced, and one of the nuances that readers will appreciate if they read the guideline is that how smoldering myeloma is risk stratified has been different across different trials. And that really adds to the complexity of this recommendation and is one of the reasons that the panel felt that it was appropriate to recommend either observation or treatment. Brittany Harvey: It is great to have these new recommendations for this unique patient population. And as you both mentioned, that individualized patient care is really important across this entire guideline. So then following those recommendations, Dr. Mikhael, what is recommended for initial therapy, autologous stem cell transplantation, post transplant therapy, and measurement of response for patients with transplant eligible multiple myeloma? Dr. Joseph Mikhael: Well, that is an area that has really considerably also grown since the last guideline. Obviously one would have to consult the guidelines to get every last detail, but in essence, we want to assess whether or not patients are transplant eligible or ineligible. And that assessment is not based on age or renal function alone, but indeed on a careful assessment of that patient. When that assessment is made and deemed that a patient is transplant eligible, our recommendation is that a patient typically would receive a quadruplet. That is to say, a monoclonal antibody directed against CD38, a proteasome inhibitor, an immunomodulatory drug, and dexamethasone to be given for approximately four to six cycles followed by the stem cell transplant, followed by potentially another two cycles of consolidation, and then maintenance therapy. A couple of important caveats. One, we do have two different CD38 antibodies that can be used, either daratumumab or isatuximab. Although typically bortezomib is the preferred proteasome inhibitor, consideration can be given to carfilzomib by virtue of the potential toxicity from bortezomib. And then lastly in the maintenance setting, we are typically recommending at least lenalidomide alone, but consideration can be given to dual maintenance therapy as the data is emerging to either add to that daratumumab or carfilzomib. All the while using the IMWG criteria for response. The goal of course is to achieve the deepest response possible and to maintain that response until such time as patients would relapse. Finally, the length of maintenance therapy continues to be an area of equipoise and study in multiple myeloma. And so at minimum, patients would receive two to three years of maintenance therapy, and based on risk status and depth of response it can be considered that patients would potentially come off maintenance therapy, of course always with the caveat that toxicity would influence length of therapy as well. Brittany Harvey: Yes, as you mentioned, evaluating which patients are eligible is extremely important for considering what is recommended in the guideline for both transplant eligible and transplant ineligible patients. So then Dr. Hicks, following those recommendations for transplant eligible multiple myeloma, what are the recommended treatments, goals of therapy, and measurement of response for patients with transplant ineligible multiple myeloma? Dr. Lisa Hicks: You know, I really can't emphasize enough how important an individualized patient assessment is. When we are thinking about the range of patients that are included in this category of transplant ineligible patients, it is a huge range. You may have fairly fit patients in their late 70s all the way to patients in their 90s. And we really want to see that treatments are tailored both to the fitness of the patient, their individual circumstances, and their preferences. And it is a wonderful thing to have lots of options for patients in this circumstance. What the guidelines have recommended for most patients who are transplant ineligible but fit enough for a stronger therapy is quadruplet therapy. So actually therapy that is very similar to what is being recommended in the transplant eligible population but for a longer period of time. And then for those patients who for whatever reason, be it their fitness or their preference, are not appropriate for that quadruplet therapy, the recommendation is for triplet therapy with a combination of lenalidomide, bortezomib, dexamethasone, or very often, more often in most cases, an antibody based approach with an anti-CD38 plus lenalidomide plus dexamethasone. Dr. Joseph Mikhael: The only thing I would add to that, I think we have to also, as we do mention in our recommendations, be particularly cautious with the dosing of these medications. Because even though we think of them as a single agent or a particular class, there can be quite a variation within the dosing regimen that can affect a patient's side effects and their quality of life. And so being very careful with dose modifications, and particularly in the transplant ineligible patient, is an important part of the recommendation as well. Dr. Lisa Hicks: Yeah, this is a podcast so no one can see me nodding vigorously that dose modification is so important particularly with those older and frailer patients, and with particular attention to trying to reduce dexamethasone doses and favoring weekly administration of bortezomib when that drug is used. Brittany Harvey: Absolutely. Considering the risks and benefits and patient preferences is really key to selecting therapy for these patients. So then Dr. Mikhael, for the final overarching patient population addressed in this guideline, for patients with relapsed or refractory multiple myeloma, what treatment options are recommended? Dr. Joseph Mikhael: This of course is, if you will, the biggest part of the guideline because there has been so much done in the relapse setting. And I think we start the guideline by saying a decision has to be made as to when to institute therapy. That there may be some patients with slow biochemical relapse that may be monitored for a period of time. But when the decision is made to initiate treatment, instead of a simple algorithm, the guideline emphasizes the fact that there are multiple choices that can be given to a patient that are going to match what comorbidities the patient has, what they have been treated with before, and of course what their preferences are. I think we highlight two particular areas. That now that CAR-T cell therapy is available as early as first relapse, it should be a consideration by virtue of the fact that it has resulted in such deep and durable responses. But that triplets should also be considered in that earlier relapse setting because we do have multiple classes of agents that can be used. We know that in later relapse options exist including bispecific antibodies for which we have four different choices. And that in general, patients will ultimately receive either a triplet or CAR-T cell therapy in earlier relapse, but there are some patients who may be eligible only for a doublet by virtue of their comorbidities and of their prior therapies. Lastly, it really does emphasize the point as we have mentioned a few times in this podcast, and I am so glad it keeps coming up, is that as I often say we don't treat myeloma, we treat people. And engaging the patient in that conversation to ensure that the right treatment gets matched to the right patients is particularly important because with all the new classes that we have with antibody drug conjugates, with XPO1 inhibitors, the traditional three classes of proteasome inhibitors, immunomodulatory drugs, monoclonal antibodies, along with as we have already mentioned CAR-T and bispecific antibodies, it really is an incredible laundry list of choice. And making that choice specific to the patient becomes absolutely critical. I should also lastly note that there are patients who may defer their initial transplant. There may be patients who may be eligible for a second transplant. So autologous stem cell transplant, although primarily used in the frontline setting, may still be a consideration for a smaller subset of patients in the relapse setting. Dr. Lisa Hicks: I think maybe one thing that I would add is an overarching principle which is actually similar to a principle in the first guideline, and that is that in the relapsed or refractory setting, there are many different treatment options. And in fact, the number of treatment options feels like it is evolving every day. But an overarching principle for clinicians to consider is to try and choose combinations of drugs that the patient has either not been exposed to in the past or certainly that they are not refractory to. We really want to be pulling new options out of the toolbox as much as we can. Dr. Joseph Mikhael: Very often we do see where someone may be on a triplet and they are progressing on it and someone just changes out one drug. We have suggested not to take that approach but to take the approach of completely introducing a new therapy when someone is progressing on their current therapy. I think that point is particularly important and the consensus panel was very clear. Brittany Harvey: Understood. That is very helpful when thinking about what options to offer to patients in the relapsed and refractory setting. And as you mentioned earlier, the figures in this guideline provide an outline of options and then the tables really go into some of the details and outcomes of the trials, and those are very helpful for clinicians to refer to. So then Dr. Hicks, we have talked a little bit about some of the nuances of the guideline, but what should clinicians know as they implement these new and updated recommendations? Dr. Lisa Hicks: I think they should feel comfortable that these are trustworthy guidelines. So these are evidence-based guidelines that have been rigorously developed after a very thorough evidence review and put together by a panel of experts who were extremely thoughtful in their review of the evidence. And so all of this contributes to the trustworthiness of the guidance. And then I would also encourage people to take a deep look at the guidelines because of the importance of nuance that is addressed in them, and then to also explore some of the tools that ASCO is developing that helps with implementation including the flow charts that are contained within the guidelines and some additional tools that are available online. Brittany Harvey: Absolutely. The tools and resources for this guideline are available online with the publication and we will provide links to that in the show notes of the episode. So then following that, Dr. Mikhael, how does this guideline update affect patients with multiple myeloma? Dr. Joseph Mikhael: As we sort of intimated earlier, I like to say I don't treat myeloma, I treat people. I think we should always be patient-centric and patient-focused. And I think in the discussion we always were. We always wanted to ensure that multiple factors go into a decision-making process. We are not just looking at the biology of the disease, we are looking at patient factors. Those patient factors include their frailty as we commented in a frailty assessment, their preferences, their comorbidities. And I think, in a day where we have so many choices, we emphasize in the guideline the importance of that conversation with the patient. That, if you will, shared decision-making model where options are laid out and based on the patient factors and the treatment factors they can then be meshed together in the best way so that patients can make the right choice. And of course in conjunction with the guidelines, we have patient friendly summaries of them. And we involved, of course, patients in the development of these guidelines. And I think that is one of the greatest strengths of the ASCO guidelines is that there is a patient with us at the table who is giving their perspective on the guideline as we go forward. So I am very thankful that we have created a product that is, if you will, not only for the providers, the practitioners that are prescribing these agents and that are directly giving the care, but indeed for the very patients who of course have the most at stake here. Dr. Lisa Hicks: Yeah Joe, I am so glad you called out the participation of patient partners in the guideline. It is such an important part and they were really- the patient partner was such an important part of this panel in helping us understand the patient perspective as we developed this guidance. Brittany Harvey: Definitely. It is a hugely important role for the panel and for all of the panel including the patient partners and the experts in the disease to review the evidence and come up with comprehensive recommendations. And yes, as you mentioned, the individualized treatment and the shared decision-making is really paramount to this guideline. Finally, Dr. Hicks, you alluded to earlier the vast number of treatment options that is really exploding in multiple myeloma. And so this guideline is becoming a living guideline continuously updated by ASCO. So what are the outstanding questions regarding this topic and what evidence is the panel looking forward to for future updates? Dr. Lisa Hicks: I am really excited about this. This is one of the first guidelines that will be a living guideline for ASCO and it is such a good fit. You have heard Joe and I say a few times how quickly this field is moving, how complex the field is. I think everyone on the panel knew that no matter how quickly we did it and how deeply we reviewed the evidence, it was inevitable that more evidence would be generated as we were putting out the guideline. In a field like that, it is really important that we find a way to provide evidence-based guidelines quickly to the community. You know, waiting another five years, letting another 150 trials accrue before we do another guideline is not what the community needs. And so ASCO has really risen to this challenge and is committed to living guidelines. And so a living guideline is a guideline that commits to reviewing the evolving evidence on an ongoing basis, watching for practice changing trials, and having a standing panel that will review evidence and update recommendations on a regularly scheduled basis. So that is what a living guideline is, and that is what this guideline is becoming. That is just the first thing in terms of what a living guideline is. And then what are we watching? Well, honestly what aren't we watching? There is so much happening in multiple myeloma. We knew as we put the guideline out that there were trials in process, some trials that had been released at conferences but not yet published. We will be waiting for those and if they are practice changing they will be addressed in upcoming updates. There is new evidence just recently presented around combined anti-CD38 and bispecific antibodies. I don't know yet whether that will be addressed but I wouldn't be surprised if it was. There are so many things coming down the pipeline and it is just wonderful that there is going to be a way to try and address them in a robust fashion. Dr. Joseph Mikhael: Yeah I agree with you, Lisa. I can't think of another disease that would be more relevant for a living guideline. I mean we had difficulty because new data kept coming in as we were making recommendations. And so at some point we had to draw a line and say this is where we will stop and produce this guideline and have it ongoing. And I really look forward to seeing the updates because we know as you mentioned that there are so many things that are on the verge of approval and on the verge of changing the way we manage this terrible disease. And before I close, I would love to remind all of our listeners that as we commented from the start, patient engagement is critical at ASCO and in our guidelines process. Unfortunately we lost a very dear patient during the guidelines process, and that is Jack Aiello. Jack Aiello had been a patient and a patient advocate for many, many years in the myeloma community. And indeed we have actually dedicated these guidelines to his honor. And so I thought it would be valuable for us to mention that today. And we miss you Jack, but we are very grateful that we have been able to dedicate this excellent body of work to your memory. Brittany Harvey: Absolutely. This guideline and your dedication to him is an honor to his memory and we really recognize him in thinking about this guideline. We will look forward to those future trial results that you mentioned, Dr. Hicks, to update this guideline and continue to provide options for patients with multiple myeloma and improve upon those options and shared decision-making with patients. So I want to thank you both for all of your work to develop this guideline and for your time today, Dr. Hicks and Dr. Mikhael. Dr. Lisa Hicks: You are so welcome. Thanks for featuring this guideline. Dr. Joseph Mikhael: Thank you so much, Brittany. It has been a privilege. Brittany Harvey: Finally, thank you to all of our listeners for tuning in to the ASCO Guidelines podcast. To read the full guideline, go to www.asco.org/hematologic-malignancies-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines App, which is available in the Apple App Store or the Google Play Store. If you have enjoyed what you have heard today, please rate and review the podcast and be sure to subscribe so you never miss an episode. 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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