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11/12/2025

Management of Cancer During Pregnancy Guideline

Dr. Alison Loren and Dr. Ann Partridge share the latest guideline from ASCO on the management of cancer during pregnancy. They highlight the importance of this multidisciplinary, evidence-based guideline and overarching principles for the management of cancer during pregnancy. Drs. Loren and Partridge discuss key recommendations from each section of the guideline, including diagnostic evaluation, oncologic management, obstetrical management, and psychological and social support. They also touch on the importance of this guideline and accompanying tools for clinicians and how this serves as a framework for pregnant patients with cancer. The conversation wraps up with a discussion on the unanswered questions and how future evidence will inform guideline updates. Read the full guideline, "Management of Cancer During Pregnancy: ASCO Guideline" at www.asco.org/survivorship-guidelines TRANSCRIPT This guideline, clinical tools, and resources are available at www.asco.org/survivorship-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-25-02115  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. Alison Loren from the Perelman School of Medicine of the University of Pennsylvania and Dr. Ann Partridge from Dana-Farber Cancer Institute, co-chairs on "Management of Cancer During Pregnancy: ASCO Guideline." Thank you for being here today, Dr. Loren and Dr. Partridge. Dr. Alison Loren: Thanks for having us. Dr. Ann Partridge: It's a pleasure. Brittany Harvey: And then just before we discuss this guideline, I would like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Partridge and Dr. Loren 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 the meat of this guideline, to start us off, Dr. Loren, could you provide an overview of the scope and purpose of this new guideline on the optimal management of cancer during pregnancy? Dr. Alison Loren: Sure, thanks, Brittany. So this was really born out of I think a lot of passion and concern for this really vulnerable patient population. We have observed, and I am sure it is not any surprise to your audience, that the incidence of cancer in young people is increasing. And simultaneously, people are choosing to become pregnant at older ages, and so we are seeing more and more people with a cancer diagnosis during their pregnancy. And for probably obvious reasons, there is really no way to do randomized clinical trials in this population. And so really trying to assemble and articulate the best evidence for safely managing the diagnosis of cancer, the management of cancer once it is confirmed, being thoughtful about obviously the health of the mom, but also attending to potential risks to the developing fetus, and really just trying to be really comprehensive and balanced about all the choices for these patients when they are facing some really challenging decisions in a very emotionally fraught environment. And I think it is really emotionally fraught for the providers, too. You know, this is obviously an extremely intense, very emotional set of decisions, and so trying to provide a rudder essentially to sort of help people frame the questions and trying to make as evidence-based a set of recommendations as possible. Dr. Ann Partridge: And I would just add that "evidence-based" is a strong word here because typically our, as you just heard, our gold standard evidence is a randomized trial, but you can't do that in this setting, in general. And so, what we were able to do with the support of the phenomenal ASCO staff was to pull together kind of the world's literature on the safety and outcomes of treatments during pregnancy, as well as consensus opinion. And I think that is a really, really critical difference about this particular guideline compared to many of the other ones that ASCO does, where consensus and good judgment needed to kind of rule the day when evidence is not available. So, there is a lot of that in our recommendations. Dr. Alison Loren: That is such a good point. And I just, before we move forward, I just want to reflect that the composition of the panel was really broad and wide-ranging. We had maternal medicine specialists, we had legal and ethical experts, we had representatives who understand pharmaceutical industries' perspectives, and then medical oncologists representing the full spectrum of oncology diagnoses. And so it was a really diverse, in terms of expertise, panel, internationally composed to try to really get the best consensus that we could in the absence of gold standard evidence. Brittany Harvey: Absolutely. That multidisciplinary panel is really key to developing this guideline and, as you said, looking at the evidence and even though it does not reach the level of randomized trials, still critically evaluating it and reviewing that along with consensus to come up with optimal management for diagnosis and management of cancer during pregnancy. So then to follow that up, I would like to next review the key recommendations of the guideline across the main sections that the expert panel provided. First, I will throw this out to either of you, but what are the important general principles for the management of cancer during pregnancy? Dr. Ann Partridge: I think there were three major principles that we hammer home in the guidelines. One is that this is a team sport. It is multidisciplinary care that is necessary in order to optimize outcomes for the patient and potentially for the fetus. And that you really need to, from the beginning, bring in a coordinated team, including not just oncologists but obstetricians, maternal-fetal medicine specialists, neonatologists, ethics consultants, and obviously the patient and potentially her family. So that, I think, is one of the most important things. Second would be that obviously in a pregnancy, there are two potential patients and that the nuances of safety and risk from treatment is really wrapped up in where in the trimester of the pregnancy the patient is diagnosed, along with the kind of cancer that it is, both the urgency of treatment and the risk of the cancer, as well as the potential risks of any given intervention across the cancer continuum. It is a broad guideline in that regard. And then finally, and this is particularly timely given what is going on from a sociopolitical standpoint in the U.S., really thinking about informed consent and potential ethical as well as legal implications of some of the choices that patients might have when they are thinking about, in particular, continuing a pregnancy or potential termination. Dr. Alison Loren: And I will just add that I think that the key to all of this guidance is nuance and individualization and also making sure that patients and their care providers understand all the choices that are available to them and also the consequences of those choices. You know, nobody would choose to receive chemotherapy during pregnancy if that wasn't necessary. So there are risks to treatment, but there are also risks to not treatment. And making sure that in a suboptimal situation where you do not have a lot of evidence, trying to weigh, the best you can, the risks and benefits of all of the choices so that the patient can come to a decision about the treatment plan that is right for her. Brittany Harvey: Definitely. And those core concepts really set the stage for individualized care on what is necessary for appropriate multidisciplinary care, prioritizing both patient autonomy and informed decision making. With those core concepts and key principles in mind, I would like to move into the recommendations section of the guideline. So what are the key recommendations regarding diagnostic evaluation for pregnant patients with signs or symptoms of cancer? Dr. Alison Loren: I think the most important thing is to not delay, that there are very careful and well-thought-out recommendations for how to evaluate a potential cancer. And while there are certain things that we know can be harmful, particularly when certain dose thresholds are exceeded - for instance, abdominal imaging, there are certain radiographic thresholds that you don't want to exceed because of risk of harm to the embryo or fetus - there are still lots of options for diagnosing cancer during pregnancy. And again, thinking about the costs of not doing versus the cost of doing, right? It is really important to make the diagnosis of cancer if that is a consideration or a concern. And sometimes going directly to biopsies or getting definitive studies, even if there is a small risk to the developing fetus, is really essential because if the mom does not survive, of course, the fetus is also not going to survive. And so we need to be thinking first about the patient who is sitting in front of us, the woman who needs to know what is going on in her body so she can make good decisions about her health. So, I think that is a key principle in thinking about this. Brittany Harvey: Absolutely. So, following that diagnosis of a new or recurrent cancer, what is recommended for oncologic management of patients who are diagnosed with cancer during their pregnancy? Dr. Ann Partridge: So, I think the general prin

11/12/2025

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35 min
19/03/2025

Fertility Preservation in People with Cancer Guideline Update

Dr. Irene Su and Dr. Alison Loren present the latest evidence-based recommendations on fertility preservation for people with cancer. They discuss established, emerging, and investigational methods of fertility preservation for adults and children, and the role of clinicians including discussing the risk of infertility with all patients. Dr. Su and Dr. Loren also touch on other important aspects of fertility preservation, including the logistics of referral to reproductive specialists, navigating health insurance, and costs. They also discuss ongoing research and future areas to explore, including risk stratification, implementing screening, referral, and navigation processes in lower resource settings, fertility measurements, and health care policy impacts. Read the full guideline update, "Fertility Preservation in People with Cancer: ASCO Guideline Update" at www.asco.org/survivorship-guidelines." TRANSCRIPT This guideline, clinical tools, and resources are available at http://www.asco.org/survivorship-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-24-02782 In this guideline, the terms "male" and "female" were defined based on biological sex, specifically focusing on reproductive anatomy at birth. "Male" refers to individuals born with testes, while "female" refers to those born with ovaries. The guideline, and this podcast episode, we will refer to individuals as "males" or "females" based on this definition. 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. Irene Su from the University of California, San Diego, and Dr. Alison Loren from the University of Pennsylvania, co-chairs on "Fertility Preservation in People With Cancer: ASCO Guideline Update." Thank you for being here today, Dr. Su and Dr. Loren. Dr. Irene Su: Thanks for having us. Dr. Alison Loren: Thanks for having us. Brittany Harvey: 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. Su and Dr. Loren, 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 jump into the content here, Dr. Loren, this is an update of a previous ASCO guideline. So what prompted this update to the 2018 guideline on fertility preservation? And what is the scope of this particular update? Dr. Alison Loren: Yeah, thanks, Brittany. So, yeah, a couple of things, actually. I would say the biggest motivation was the recognition that the field was really moving forward in several different directions. And we felt that the previous guidelines really hadn't adequately covered the need for ongoing reproductive health care in survivorship, including the fact that fertility preservation methods can be engaged in even after treatment is finished. And then also recognizing that there is increasing data supporting various novel forms of fertility preservation in both male and female patients. And we wanted to be able to educate the community about the wide array of options that are available to people with cancer, because it really has changed quite a bit even in the last six years. And then lastly, as I'm sure this audience, and you definitely know, ASCO tries to update the guidelines periodically to make sure that they're current. So it sort of is due anyhow, but I would say motivated largely by those changes in the field. Brittany Harvey: Great. I appreciate that background information. So then I'd like to dive a little bit more into those updates that you discussed. So, Dr. Su, I'd like to review the key recommendations across the main topics of this guideline. So starting with what are the recommendations regarding discussing the risk of infertility with patients undergoing cancer treatment? Dr. Irene Su: Thanks, Brittany. So for every child, adolescent, and adult of reproductive age who's been diagnosed with cancer, the recommendation remains that healthcare clinicians should discuss this possibility of infertility as early as possible before treatment starts, because that allows us, as reproductive endocrinologists and fertility specialists, to preserve the full range of options for fertility preservation for these young people. Where it's possible, I think risk stratification should be a part of the clinical infertility risk counseling and then the decision making. And then for patients and families who have an expressed interest in fertility preservation, and for those who are uncertain, the recommendation is to refer these individuals to reproductive specialists. And it turns out this is because fertility preservation treatments are medically effective for improving post-treatment fertility and counseling can ultimately reduce stress and improve quality of life, even for those who don't undergo fertility preservation. And as Dr. Loren said, a change in the guideline is specifically about continuing these discussions post-treatment yearly or when cancer treatments change because that changes their infertility risk or when pregnancy is being considered. Brittany Harvey: Absolutely. Discussing that risk of infertility at the beginning, before any treatment is initiated, and when treatment changes, is key. So then talking about the options for patients, Dr. Loren, what are the recommended fertility preservation options for males? Dr. Alison Loren: There has been a little bit of an evolution in options for male patients. The standard of care option which is always recommended is cryopreservation of sperm, or otherwise known as sperm banking. And this is something that should be offered ideally prior to initiating cancer directed therapy. The guideline does reflect the fact that we're starting to understand in a little bit more depth the impact of cancer-directed treatments on the health and quantity of sperm. And so trying to understand when, if ever, it's appropriate to collect sperm after initiation of treatment, but before completion of treatment remains an area of active research. But the current understanding of the data and the evidence is that sperm banking should be offered prior to initiating cancer-directed therapy. And all healthcare clinicians should feel empowered to discuss this option with all pubertal and post-pubertal male patients prior to receiving their treatment. We do offer a little bit more information about the ideal circumstances around sperm banking, including a minimum of three ejaculates of sufficient quality, if possible, but that any collections are better than no collections. We also talk about the fact that there is a relatively new procedure known as testicular sperm extraction, which can be offered to pubertal and post-pubertal males who can't produce a semen sample before cancer treatment begins. There remains no evidence for hormonal protection of testicular function - that has been a long-standing statement of fact and that remains the case. And then we also begin to address some of the potential risk of genetic damage in sperm that are collected soon after initiation of cancer-directed therapy. We are starting to understand that there is a degradation in the number and DNA integrity of sperm that can occur even after a single treatment. And so, really highlighting the fact that collecting samples, again, to Dr. Su's point, as early as possible and as many as possible to try to optimize biological parenthood after treatment. Brittany Harvey: Yes. Thank you for reviewing those options and what is both recommended and not recommended in this scenario. So then, following those recommendations, Dr. Su, what are the recommended fertility preservation options for female patients? Dr. Irene Su: There are a number of established and effective methods for fertility preservation for people with ovaries, and this includes freezing embryos, freezing oocytes, freezing ovarian tissue. For some patients, it may be appropriate to do ovarian transposition, which is to surgically move ovaries out of the field of radiation in a conservative gynecologic surgery, for example, preserving ovaries or preserving the uterus in people with gynecologic cancers. We do recommend that the choice between embryo and oocyte cryopreservation should be guided by patient preference and clinical considerations, their individual circumstances, including future flexibility, the success rates of embryo versus egg freezing that we detail more in the guideline, and legal considerations. And what is new in this guideline, as Dr. Loren alluded to earlier, is consideration of post-treatment fertility preservation for oocyte and embryo freezing. And this is going to be because, for some females, there's going to be a shortened but residual window of ovarian function that may not match when they are in their life ready to complete their families. And so for those individuals, there may be an indication to consider post-treatment fertility preservation. We clarify that gonadotropin releasing hormone agonists, GNRH agonists, while they shouldn't be used in the place of established fertility preservation methods, e.g., oocyte and embryo freezing, they can definitely be offered as an adjunct to females with breast cancer. Beyond breast cancer, we don't really understand the benefits and risks of GNRH agonists and feel that clinical trials in this area are highly encou

19/03/2025

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32 min
24/06/2025

GI Cancer Research at ASCO25: Plenary Highlights and More

Dr. Shaalan Beg and Dr. Kristen Ciombor discuss practice-changing studies in GI cancers and other novel treatment approaches that were presented at the 2025 ASCO Annual Meeting. Transcript Dr. Shaalan Beg: Hello, I'm Dr. Shaalan Beg, welcoming you to the ASCO Daily News Podcast. I'm a medical oncologist and an adjunct associate professor at UT Southwestern Medical Center in Dallas, Texas. There were some remarkable advances in gastrointestinal cancers that were presented at the 2025 ASCO Annual Meeting, and I'm delighted to be joined by Dr. Kristen Ciombor to discuss some exciting GI data. Dr. Ciombor is the Ingram Associate Professor of Cancer Research and a co-leader of Translational Research and the Interventional Oncology Research Program at the Vanderbilt Ingram Cancer Center. Our full disclosures are available in the transcript of this episode. Dr. Ciombor, it's great to have you on the podcast today. Dr. Kristen Ciombor: Thanks, Dr Beg. It's great to be here. Dr. Shaalan Beg: Alright, let's kick it off. Big year for GI cancers. We'll start off with LBA1. This was the ATOMIC study sponsored by NCI and the National Clinical Trials Network (NCTN) and the Alliance group. This is a randomized study of standard chemotherapy alone or combined with atezolizumab as adjuvant therapy for stage III mismatch repair deficient colorectal cancer. Dr. Kristen Ciombor: I think this study was really definitely practice-changing, as you can tell because it was a Plenary. But I do have some concerns in terms of how we're actually going to implement this and whether this is the final answer in this disease subtype. So, as you said, the patients were enrolled with stage III resected mismatch repair deficient colon cancer, and then they were randomized to either modified FOLFOX6 with or without atezolizumab. And that's where it starts to become interesting because not many of us give FOLFOX for 6 months like was done in this study. Obviously, the study was done over many years, so that was part of that answer, but also the patients received atezolizumab for a total of 12 months. So the question, I think, that comes from this abstract is, is this practical and is this the final answer? I do think that this is practice-changing, and I will be talking to my patients with resected mismatch repair deficient colon cancer about FOLFOX plus atezolizumab. I think the big question is, do these patients need chemotherapy? And can we do a neoadjuvant approach instead? And that's where we don't have all the answers yet. Dr. Shaalan Beg: Yeah, but it has been great to see immunotherapy make its way into the adjuvant space after having made such a big impact in the metastatic space, but still some unanswered questions in terms of the need for chemotherapy and then the duration of therapy, which I guess we'll have to stay tuned in for the next couple of years to to get a lot of those questions answered. Dr. Kristen Ciombor: Yeah, but a big congratulations to the study team, to the NCTN, the NCI. I mean, this is really a great example of federally funded research that needs to continue. So, great job by the study team. The DFS 10% difference is really very large and certainly a practice-changing study. Dr. Shaalan Beg: Yeah, and and sticking with colon cancer, and and this another federally funded study, but this time funded by a Canadian cancer clinical trials group was LBA3510. This is the CHALLENGE study. It's a randomized phase 3 trial of the impact of a structured exercise program on disease-free survival for stage III or high-risk stage II colon cancer. This study got a lot of buzz, a lot of mainstream press coverage, and a lot of discussions on what that means for us for the patients who we're going to be seeing next week in our clinic. What was your takeaway? Dr. Kristen Ciombor: Yeah, this is a really interesting study, and I was so glad to see it presented because this partially answers one of the questions that patients always have for us in clinic, right? You know, once they've completed their standard chemotherapy and surgery, what else can they do to help prevent recurrence? And so we've always known and sort of extrapolated that healthy lifestyle habits are good, but now we have data, particularly in these patients. Most of them were stage III colon cancer patients, those had high-risk stage II cancer. And basically, the goal was to increase their physical activity by at least 10 MET hours per week. So, my big question, of course, as I came into this presentation was, "Okay, what does that mean exactly? How does that translate to real life?" And really what the author presented and explained was that basically most patients could hit their target by adding a 45- to 60-minute brisk walk 3 to 4 times a week. So I think this is very approachable. Now, in the confines of the study, this was a structured exercise program, so it wasn't just patients doing this on their own. But I do think kind of extrapolating from that, that this is very achievable for most patients. And not only did this prevent recurrence of their prior cancer, but actually the rate of new primary cancer diagnoses, was less, which is really interesting, especially in the breast and prostate cancer. So this was a really interesting, and I think practice-changing study as well, especially given that this is something that most patients can do. Dr. Shaalan Beg: Yeah, and there was a lot of discussion in the hallways after the presentation in terms of how this really changes our existing practice because most folks already recommend exercise as a way for improving outcomes in cancer patients. So we've already been doing that. Now we have some data on how much it can impact the benefit. But there was some discussion about what the actual degree of impact was. There was a drop-off rate in terms of how long folks were able to stick with this exercise regimen. But you've seen this in clinic when someone have their surgery, they have their chemotherapy, they've been so intimately involved with the oncology world, with the oncology practice, and they somehow feel that they're being let loose into this mean, angry world without any guidance and they're looking for something to do. "What more can I do in terms of my lifestyle?" And then here we have very solid data, as solid as can be for an intervention like exercise, showing that there is an impact and you can give a prescription for exercise when someone wraps up their chemotherapy for colon cancer, thanks to the study. Dr. Kristen Ciombor: Yeah. It was a great study. Dr. Shaalan Beg: Moving to gastroesophageal cancer, another late-breaking abstract. This is LBA5. The MATTERHORN trial was a phase 3 trial of durvalumab plus FLOT for resectable GE junction and gastric cancer. And again, another area where immunotherapy has made an impact, and here we're seeing it move closer for earlier-stage disease. What was your take-home for the MATTERHORN trial? Dr. Kristen Ciombor: Yeah, so this study looked at neoadjuvant perioperative durvalumab plus our current standard chemotherapy of FLOT versus placebo plus FLOT. And this was a large study, almost 1,000 patients were randomized. And the primary endpoint was event-free survival, and it was definitely met in favor of the D + FLOT arm, as Dr. Klempner discussed after Dr Janjigian's presentation. I do think there are still some unanswered questions here. Overall survival is not yet mature, so we do have to wait and see how that shakes out. But it's very interesting and kind of is reflective of what, as you said, we're looking at earlier and earlier lines of therapy, particularly with immunotherapy, in these GI cancer spaces. So it makes a lot of sense to test this and and to look at this. So the toxicity was pretty similar to what we would expect. Primary endpoint was met, but again, we'll have to wait and see what the survival data looks like. Dr. Shaalan Beg: Yeah, and in oncology, we know, especially for treatment that does add additional cost, it does add additional potential toxicity that we want to see that overall survival nudged. I did see some polls on social media asking folks whether their practices changed from this, and I think the results were favoring adding durvalumab for this group of patients but understanding that there are caveats to the addition of treatments and the eventual FDA approval in that indication as well. Dr. Kristen Ciombor: Exactly. I completely agree with that. Dr. Shaalan Beg: All right. How about we stick with gastroesophageal cancer? LBA4002 was trastuzumab deruxtecan versus ramucirumab plus paclitaxel for second-line treatment in HER2-positive unresectable or metastatic gastric cancer or GE junction cancer. This was the DESTINY-Gastric04 study. And again, antibody-drug conjugates making a big impact across different diseases. And here we have more data in the HER2-positive gastric cancer space. Your thoughts on this study? Dr. Kristen Ciombor: Yeah, so this is a really important space in gastroesophageal cancer because the HER2 positivity rate is fairly high as compared to some of our other tumor types. So, I do think one of the important things was that patients did have biopsy confirmation of HER2 status, which was very important, and then they were randomized to either T-DXd versus the kind of second-line standard of ramucirumab-paclitaxel. So this was a great practical study and really answers a question that we had for a while in terms of does anti-HER2 therapy in the second-line really impact and improve survival. So we did see a statistically significant improvement favoring T-DXd. I do think it's always important to look at toxicity, though, too. And there was about almost 14% rate of interstitial lung disease, which of course is the most feared toxicity from some of these antibody-drug conjugates, especially T-DXd. So I do think it's important to keep that in mind, but this is definitely a great addition to the

24/06/2025

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21 min
21/08/2025

The Gut Microbiome and Immunotherapy: Researching the Connection

Dr. Sumanta (Monty) Pal and Dr. Arielle Elkrief discuss the clinical relevance of the gut microbiome in cancer immunotherapy and the importance of antibiotic stewardship, as well as interventions currently being explored to treat gut dysbiosis and optimize immunotherapy response. TRANSCRIPT Dr. Sumanta (Monty) Pal: Hi everyone, I'm Dr. Monty Pal, welcoming you to the ASCO Daily News Podcast. I'm a medical oncologist. I'm a professor and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles. Today we're here to discuss one of my favorite topics, which is the gut microbiome. It's almost hard to avoid the gut microbiome nowadays if you look at medical literature within oncology. It's an emerging phenomenon, but there are a couple of individuals that I would really define as pioneers in the field. And one of them is actually with me today, Dr. Arielle Elkrief, to discuss the clinical relevance of the gut microbiome, particularly amongst patients receiving immunotherapy, although I imagine our conversation today will take many twists and turns. Arielle is an assistant professor and clinician scientist in the Department of Oncology at the University of Montreal, and she is co-director of the CHUM Microbiome Center there. FYI for the listeners, we have our full disclosures in the transcript of this episode. Arielle, thank you so much for joining us today. Dr. Arielle Elkrief: Thanks so much, Monty. This is going to be amazing. Dr. Sumanta (Monty) Pal: Well, I have to tell you what sort of inspired me to bring you on as a guest. It was one of many things, but it was this really terrific ASCO Educational [Book] article that you wrote. Now, I have to tell you, I've read all the articles sort of cover to cover in the book, and they're always a wonderful primer, so if our audience is studying for board research or something of that sort, it's a terrific resource to go through. I have to tell you, this piece on the gut microbiome that you wrote is nothing short of a masterpiece. If you read this cover to cover, it's actually going to give you, I think, a sense of the current state and future state of the field. I wanted to start by just sort of beginning with sort of the origin story for a lot of this, which is this association between the gut microbiome and immunotherapy response. This takes us back several years to this pivotal series of papers in Science. Maybe you could walk our audience through that. Dr. Arielle Elkrief: Absolutely. Well, thank you so much for your kind words about the ASCO [Educational] Book. It was a team effort with a lot of key opinion leaders in the field, so I'm really glad to learn that you've liked it. Moving backwards in terms of how we came to understand that the gut microbiome is essential to priming a response to cancer immunotherapy actually goes back to 2015 and seminal papers that looked at what happens when we take mice that are germ-free mice that have never been exposed to a microbiome. These are mice that are born by cesarean section and essentially live in a bubble. And when we give those mice tumors and treat them, in the first papers with anti-CTLA-4 treatment, we realized that these antibodies don't work at all. And that was the first observation that the presence of a gut microbiome was essential to mounting an anti-cancer immune response. When we supplemented those same mice with beneficial bacteria or feces from responder patients, we were able to restore the response to immunotherapy. And so those were really the first preclinical observations that made us understand the critical role of the microbiome in immunotherapy response. Moving a little bit in the future, we examined the fecal microbiome composition using shotgun metagenomic sequencing in different cohorts of patients with solid tumors, namely lung cancers, kidney cancers, and also skin tumors like melanoma, and found that patients who responded to immunotherapy had a distinct microbiome that was characterized by beneficial bacteria compared to patients who experienced resistance to immunotherapy that had a dysbiotic or diseased microbiome. Dr. Sumanta (Monty) Pal: So, you know, it's interesting, these techniques that we're using to sequence the gut, they're a little bit different. So I wonder if you can give the audience a quick primer on these techniques that you're so well versed in, shotgun metagenomic sequencing, 16S rRNA sequencing. If you had to describe this in 30 seconds, which is a tall task, how would you do that? Dr. Arielle Elkrief: That's a tall task. Much of what we know about the microbiome initially came from a technique called 16S rRNA sequencing. This is a technique that amplifies the 16S region and basically tells you at the genus level what's going on at the level of bacterial composition. This technique is fast, relatively cheap, and can be performed on a laptop computer, which is excellent. The problem is that it's prone to a lot of technical variations. Different primers might give you different results, and you're really limited at the genus resolution. You can't get a good resolution in terms of species, and we're learning that different species from the same genus might have different physiological properties, and the same thing goes at the strain level. So when we really zone in and look at inter-species changes, we're seeing that these actually have specific functions in the host. So that brings us to metagenomic sequencing, which is a whole genome sequencing, next-generation sequencing based method that looks at the whole composition and gives you information not only on bacteria, but you might also get fungal and viral properties. You can zoom in on the strain level. You can also get functional output, so we can examine what the metabolic properties of specific species or strains might look like. The negative aspects of shotgun metagenomic sequencing is that it takes a lot of computational power in order to analyze the results and it might take a little bit longer. And certainly, within the clinical setting, not something that's feasible yet. And that brings us to more novel point-of-care biomarker tools that we've collaborated in developing along with Dr. Laurence Zitvogel and Dr. Lisa Derosa at Gustave Roussy, that learning from the shotgun metagenomics results designed a probe using quantitative PCR which looks for this specific bacteria we know to be important and developed a ratio of harmful bacteria to beneficial bacteria. This is called the TOPOSCORE, and it actually is able to predict quite nicely the response to immunotherapy using a stool sample and a really good turnaround time of almost 72 hours. Dr. Sumanta (Monty) Pal: That was a perfect overview and a lot of information in a short amount of time. It also makes you take out your high school biology textbooks, doesn't it, to understand that the bacterial ribosome, right, is a different size and shape, and that's what we're sequencing here. But these techniques I think are incredibly important, and I'm glad you actually discussed this, this RT-PCR based strategy of calculating the TOPOSCORE. It lends itself to this phenomenon of dysbiosis, and I think for our audience, that's going to be an important term to understand as time goes on. There's the normal healthy gut and then there's this phenomenon of dysbiosis, which is, I guess, simply put, an unhealthy gut. But tell us about, you know, how often you see dysbiosis in a cancer patient, maybe versus a normal healthy adult. Dr. Arielle Elkrief: So, I think we can split up your question into two parts. One is we know from cohort studies and population level-based studies that the microbiome of patients with cancer is distinct from healthy patients or healthy people. And we know that because of the global composition. We also think that there are diversity metrics that lend themselves to being described as dysbiotic. But we do know that the microbiome of people with cancer is distinct from healthy volunteers. That's the first point. In terms of how frequently dysbiosis occurs in patients with cancer, it's not very well defined. We know that even among healthy people, there is a certain level of dysbiosis. Laurence in her talk mentioned that to be about 10% to 20%. And the other fascinating component is that when we're thinking about dysbiosis and the cancer associated microbiome, in terms of the species that are enriched, it's quite striking that a lot of these dysbiotic or negative bacteria are also found to be enriched in patients with metabolic disease, like cardiovascular disease, for example. And so it's unclear if dysbiosis is the cause or consequence, but there definitely seems to be a general pattern of disease when looking at the microbiome compared to healthy people. Dr. Sumanta (Monty) Pal: That's interesting. So, I'll tell you, my second favorite portion of your article, and I'll tell you my favorite portion as well in the context of this podcast, but my second favorite part was the section around antibiotic stewardship. You know, the utilization of antibiotics in a very pragmatic fashion amongst our patients. Can you describe why that's so critical in the context of the microbiome? Dr. Arielle Elkrief: Antibiotics can disrupt the gut microbiome composition. We know this from mouse studies, but also cohort studies of patients that are exposed to antibiotics. And most importantly, we know that patients who are exposed to antibiotics, either before or during the immunotherapy period, have significantly worse progression-free survival and overall survival to immunotherapy. And this is true for immunotherapy in the monotherapy setting, but also when combined with chemotherapy. What's striking is that when we look at patients who are just treated with chemotherapy, we don't see the negative outcome of antibiotics on outcome and progression-free survival and overall survival, suggesting that th

21/08/2025

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19 min
07/08/2025

Why Are Early-Onset GI Cancers on the Rise?

Dr. Sumanta (Monty) Pal and Dr. Kimmie Ng discuss the disturbing rise of early-onset gastrointestinal cancers, the unique challenges faced by younger patients, and key research that is shedding light on potential drivers of early diagnoses in colorectal cancer. TRANSCRIPT Dr. Sumanta (Monty) Pal: Hello, everyone. I'm Dr. Monty Pal, and I'm a medical oncologist and professor and vice chair of medical oncology at the City of Hope Comprehensive Cancer Center in Los Angeles. I'm really delighted to welcome you all to the ASCO Daily News Podcast as the show's new host. I'll be bringing you discussions with leaders in the oncology space on a variety of topics. I've been working hard with the ASCO team on picking the ideal topics to bring to you, and I'm really delighted to introduce my first guest, a dear friend, Dr. Kimmie Ng, to discuss this huge problem that we're seeing nowadays of early-onset GI cancers. Dr. Ng is the associate chief of the Division of Gastrointestinal Oncology at the Dana-Farber Cancer Institute, and she's an associate professor of medicine at Harvard Medical School in Boston. She serves as co-director of the Colon and Rectal Cancer Program. She's also the founding director of the Young-Onset Colorectal Cancer Center at Dana-Farber. I'm sure we'll talk a little bit about that today. Just to note, our full disclosures are available in the transcript of this episode. Dr Ng, it's so great to have you on the podcast. Thanks so much for joining us. Dr. Kimmie Ng: Thank you so much for having me. It's great to be here. Dr. Sumanta (Monty) Pal: I'm going to refer to you as Kimmie, if you don't mind, for the rest of the podcast here. Please, we'll go by first names, if you don't mind. Your research has really done so much to help improve our understanding of early-onset GI cancers. You've done a lot of work to increase awareness in this space. I don't think there's a couple of months that passes by when I don't see you on television on Good Morning America or other shows really broadcasting this really critical message. I think there's a certain sensitivity that we all have to this issue, right? I mean, because receiving a cancer diagnosis at any age is very challenging, but I'm sure that young patients who face a colorectal cancer diagnosis have some very unique challenges. Could you give us a sense of some of those? Dr. Kimmie Ng: I think the other reason why so many people are interested in this and feel touched by this is that it's not just gastrointestinal cancers that are increasing in young people, but actually a multitude of different cancers have been rising in young individuals. And while it is difficult at any age to receive a cancer diagnosis, we do all know that young people getting a diagnosis like this do face unique challenges. Studies have shown that over 80% have children under the age of 18 when they are diagnosed with colorectal cancer, for example, under the age of 50. And many experience career and education disruptions. They are in what we call the 'sandwich generation,' where they're not only taking care of young families or starting to think about starting a young family, but they're also taking care of elderly parents. So it's just a very busy stage of life, and to then be facing a usually terminal cancer diagnosis, it is extremely challenging. The other factors that we've seen that seem to be unique or more prevalent in young patients is that there are higher levels of psychosocial distress, depression, and anxiety, and a majority of patients do need medical attention and treatment for those things, whether it's medication treatment or whether it's counseling or support from psychosocial oncologists. And so the other big issue is fertility. We know that so many of the treatments that these young patients receive do permanently and negatively impact fertility. And for a person who is young, who may still be trying to expand their family or again start a family, it is very important that these young patients do receive counseling about fertility preservation prior to starting treatment. Dr. Sumanta (Monty) Pal: You know, it's so interesting you bring this up, and I think about a patient who's in their 40s diagnosed with this disease. They're in the same demographic as I am, as you are. You know, I'm 44 years old, and you know, I'm thinking about my 11- and 12-year-old and my aging parents, right? I mean, the dilemmas that you highlighted are precisely what I'm facing in life, and it's so true, right? If I had to take my day-to-day and superimpose on that a colorectal cancer diagnosis, it would just be problematic in so many spheres, so many spheres. Dr. Kimmie Ng: Absolutely. And because we did think going into this, starting our Young-Onset Colorectal Cancer Center, that these patients will need unique supports, we did conduct a qualitative study and held some focus groups of young-onset colorectal cancer patients as well as their caregivers. And we really identified four primary themes that I think reflect a lot of the experience of patients with cancer, no matter what type of cancer when they're diagnosed young. And the first is the need, feeling overwhelmed by the healthcare system, and the need for patient navigation. As we know, a lot of these patients are previously healthy before they're facing this very serious diagnosis. The second is the need for peer-to-peer support, where they really value connecting with other young patients going through a similar experience. The third, we talked about already, the need for kind of formal psychosocial support in the form of psychosocial oncologists or psychiatrists or social workers. And the last is an interest in research. They are really very invested in getting germline genetic testing as well as somatic genomic profiling to help guide their therapy. Dr. Sumanta (Monty) Pal: That's really encouraging to hear that they themselves are interested in participating in research. I mean, obviously, that's a great way to move the field forward. I view your area of work here as being such a vexing problem because no matter what way you slice it, young-onset colorectal cancer still remains a relatively small proportion of all diagnoses. So how do you go about studying this phenomenon? I mean, it must be challenging to really sort of investigate underlying causes when ostensibly this is still a small piece of the pie. Dr. Kimmie Ng: That is such a great question and is one of the challenges me and my research team think about every single day. As you mentioned, one of the major barriers is that although these cancers are rising in young people, the absolute number of patients being diagnosed is still relatively small, and if it's going to take large scale epidemiologic studies to really understand, for example, what the dietary and lifestyle risk factors are, you need a considerable number of patients in order to have enough power to reach definitive conclusions. And so this is where it is so important to collaborate. Any single institution is not going to see enough young-onset patients with colorectal cancer to be able to do this work on their own. And so I have really been intent on establishing an international prospective cohort study of patients with young-onset colorectal cancer so that we can increase the numbers of patients we partner with to try to answer these questions, but also so that we can study this on a global scale, because unfortunately this is not something that's just plaguing the United States. It is actually happening in multiple countries around the world. So that is one barrier. The second, I would say, is that we think it's early life exposures to whatever environmental factor it is that's causing the rise that is likely contributing the most. And so if you imagine how difficult it would be to start studying individuals from when they're children through adolescence, through adulthood, and then all the way until a cancer diagnosis is obtained, a study like that would take too long, would cost too much, and really wouldn't be feasible. So we need to think of alternative ways to really try and answer this question of what is driving this rise in young-onset colorectal cancer. Dr. Sumanta (Monty) Pal: Honestly, Kimmie, this seems like almost an unfair question in the context of what you just mentioned, the challenges in terms of ascertaining causality, right? I'll tell you, I cheated a little bit ahead of this podcast. Kimmie and I had dinner together in Los Angeles a couple months ago. She came out to deliver a Presidential Lectureship at City of Hope. We were delighted to have her. And we did have a couple of thoughts exchanged over potential drivers of these early diagnoses, leaning on perhaps one of the things that you and I are both interested in, the microbiome. But amongst all these things, vitamin D, microbiome, etc., and I won't hold you to this, do you have at least a general sense of what might be contributing to this early-onset phenomenon? Dr. Kimmie Ng: Yeah, as we talked about during my visit there to City of Hope, we do hypothesize that it is a complex interaction between our exposome, which is everything we are exposed to in our environment, which does include diet and lifestyle factors, interacting with host immunity and antitumor immunity, and as well as the microbiome and shaping the composition and diversity of the gut microbiome that are likely interacting to increase susceptibility to colorectal cancer at a younger age. And I will say one of the biggest discoveries, if you will, about what might be driving young-onset colorectal cancer was published a few months ago in Nature. And that paper identified a specific mutational signature caused by the genotoxin colibactin, which is often produced by an organism called pks+ E. coli, as being much more prevalent in younger patients with colorectal cancer than older patients. And so while it doesn't explain nec

07/08/2025

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17 min
12 ENE

Designing Clinical Trials for Patients With Rare Cancers: Connecting the Zebras

Dr. Hope Rugo and Dr. Vivek Subbiah discuss innovative trial designs to enable robust studies for smaller patient populations, as well as the promise of precision medicine, novel therapeutic approaches, and global partnerships to advance rare cancer research and improve patient outcomes. TRANSCRIPT Dr. Hope Rugo: Hello and welcome to By the Book, a podcast series from ASCO that features engaging conversations between editors and authors of the ASCO Educational Book. I am your host, Dr. Hope Rugo. I am the director of the Women's Cancers Program and division chief of breast medical oncology at the City of Hope Cancer Center [in Los Angeles]. The field of rare cancer research is rapidly transforming thanks to progress in clinical trials and treatment strategies, as well as improvements in precision medicine and next-generation sequencing that enable biomarker identification. According to the National Cancer Institute, rare cancers occur in fewer than 150 cases per million each year, but collectively, they represent a significant portion of all cancer diagnoses. And we struggle with the appropriate treatment for these rare cancers in clinical practice. Today, I am delighted to be joined by Dr. Vivek Subbiah, a medical oncologist and the chief of early-phase drug development at the Sarah Cannon Research Institute in Nashville, Tennessee. Dr. Subbiah is the lead author of a paper in the ASCO Educational Book titled "Designing Clinical Trials for Patients with Rare Cancers: Connecting the Zebras," a great title for this topic. He will be telling us about innovative trial designs to enable robust studies for small patient populations, the promise of precision medicine, and novel therapeutic approaches to improve outcomes, and how we can leverage AI now to enroll more patients with rare cancers in clinical trials. Our full disclosures are available in the transcript of this episode. Dr. Subbiah, it is great to have you on the podcast today. Thanks so much for being here. Dr. Vivek Subbiah: Thank you so much, Dr. Rugo, and it is an honor and pleasure being here. And thank you for doing this podcast for rare cancers. Dr. Hope Rugo: Absolutely. We are excited to talk to you. And congratulations on this fantastic paper. It is such a great resource for our community to better understand what is new in the field of rare cancer research. Of course, rare cancers are complex and multifaceted diseases. And this is a huge challenge for clinical oncologists. You know, our clinics, of course, cannot be designed as we are being very uni-cancer focused to just be for one cancer that is very rare. So, oncologists have to be a jack of all trades in this area. Your paper notes that there are approximately 200 distinct types of rare and ultra-rare cancers. And, by definition, all pediatric cancers are rare cancers. Of course, clinical trials are essential for developing new treatment strategies and improving patient outcomes, and in your paper, you highlight some unique challenges in conducting trials in this rare cancer space. Can you tell us about the challenges and how really innovative trial designs, I think a key issue, are being tailored to the specific needs of patients with rare cancer and, importantly, for these trials? Dr. Vivek Subbiah: Rare cancers present a perfect storm of challenges. First, the patient populations are very small, which makes it really hard to recruit enough participants for traditional type trials. Second, these patients are often geographically dispersed across multiple cities, across multiple states, across multiple countries, across multiple zip codes. So, logistics become complicated. Third, there is often limited awareness among clinicians, which delays referrals and diagnosis. Add to that regulatory hurdles, funding constraints, and you can see why rare cancer trials are so tough to execute. To overcome these barriers, we are seeing some really creative novel trial designs. And there are four different types of trial designs that are helping with enrolling patients with rare cancers. The first one is the basket trial. So let us talk about what basket studies are. Basket studies group patients based on shared genetic biomarkers or shared genetic mutations rather than tumor type. So instead of running separate 20 to 30 to 40 trials, you can study one therapy across multiple cancers. The second type of trial is the umbrella trial. The umbrella trials flip that concept of basket studies. They focus on one cancer type but test multiple targeted therapies within it. The third category of innovative trials are the platform studies. Platform trials are another exciting innovation. They allow new treatment arms to be added or removed as the data matures and as the data evolves, making trials more adaptive and efficient. The final category are decentralized tools in traditional trials, which are helping patients participate closer to where they are so that they can sleep in their own bed, which is, I think, a game changer for accessibility. These designs maximize efficiency and feasibility for rare cancer research and rare cancer clinical trials. Dr. Hope Rugo: I love the idea of the platform trials that are decentralized. And I know that there is a trial being worked on with ARPA-H (Advanced Research Projects Agency for Health) funding in triple-negative breast cancer as well as in lung cancer, I think, and others with this idea of a platform trial. But it is challenged, I think, by precision medicine and next-generation sequencing where some patients do not have targetable markers, or there isn't a drug to target the marker. I think those are almost the same thing. We have really seen that these precision medicine ideas and NGS have moved the needle in helping to identify genetic alterations. This helps us to be more personalized. It actually helps with platform studies to customize trial enrollment. And we hope that this will result in better outcomes. It also allows us, I think, to study drugs even in the early stage setting more effectively. How can these advances be best applied to the future of rare cancers, as well as the challenges of not finding a marker or not having a drug? Dr. Vivek Subbiah: Thank you so much for that question. I think precision medicine and next-gen sequencing, or NGS, are truly the backbone of modern precision oncology. They have transformed how we think about cancer treatment. Instead of treating based on where the tumor originated or where the tumor started, we now look at the genetic blueprint of cancer. The NGS or next-gen sequencing allows us to sequence millions of DNA fragments quickly. Twenty, 30 years ago, they said we cannot sequence a human genome. Then it took almost a decade to sequence the first human genome. Right now, we have academic centers and commercial sequencing companies that are really democratizing NGS across all sites, not just in academic centers, across all the community sites, so that NGS is now accessible. This means that we can identify these actionable alterations like picking needles in haystacks, like NTRK fusions, RET fusions, or BRAF V600E alterations, high tumor mutational burden. This might occur across not one tumor type, across several different tumor types. So for rare cancers, this is critical because some of these mutations often define the best treatment option. Here is why this matters. Personalized therapy, right? Instead of a one-size-fits-all approach, we can tailor treatment to the patient's unique molecular profile. For trial enrollment, this can definitely help because patients can join biomarker-driven trials even if their cancer type is rare or ultra-rare. NGS technology has also helped us in designing rational studies. Many times monotherapy does not work in these cancers. So we are thinking about rational combination strategies. So NGS technology is helping us. Looking ahead, I see NGS becoming routine in clinical practice, not just at major niche academic centers, but everywhere. We will see more tumor-agnostic approvals, more molecular tumor boards guiding treatment decisions in real time. And I think we are seeing an expanded biomarker setup. Previously, we used to have only a few drugs and a handful of mutations. Now with homologous recombination defects, BRCA1/2 mutation, and expanding the HRD and also immunohistochemistry, we are expanding the biomarker portfolio. So again, I personally believe that the future is precision. What I mean by precision is delivering the right drug to the right patient at the right time. And for rare cancers, this isn't just progress. It is survival. And it is maybe the only way that they can have access to these cutting-edge precision medicines. Dr. Hope Rugo: That is so important. You mentioned an important area we will get to in a moment, the tumor-agnostic therapies. But as part of talking about that, do you think that the trials should also include just standard therapies? You know, who do you give an ADC to and when with these rare cancers? Because some of them do not have biomarkers to target and it is so disappointing for patients and providers where you are trying to screen a patient for a trial or a platform trial where you have one arm with this mutation, one arm with that, and they do not qualify because they only have a p53 loss, you know? They just do not have the marker that helps them. But we see this in breast cancer all the time. And it is tough because we don't have good information on the sequencing. So I wonder, you know, just because for some of these rare cancers it is not even clear what to use when with standard treatments. And then that kind of gets into this idea of the tumor-agnostic therapies that you mentioned. There are a lot of new treatments that are being evaluated. We have seen approval of some treatments in the last few years that are tumor-agnostic and based on a biomarker. Is that the best approach as we go fo

12 ene

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25 min
24/02/2025

JCO Article Insights: Long-Term Outcome of Neoadjuvant Chemotherapy for Rectal Cancer

In this JCO Article Insights episode, Peter Li summarizes "Neoadjuvant Modified Infusional Fluorouracil, Leucovorin, and Oxaliplatin With or Without Radiation Versus Fluorouracil Plus Radiation for Locally Advanced Rectal Cancer: Updated Results of the FOWARC Study After a Median Follow-Up of 10 Years," by Dr. Jianwei Zhang et al. published on December 13, 2024. TRANSCRIPT Peter Li: Hello and welcome to the JCO Article Insights. I'm your host Peter Li and today we will be discussing the Journal of Clinical Oncology article, "Neoadjuvant Modified Infusional Fluorouracil, Leucovorin, and Oxaliplatin With or Without Radiation Versus Fluorouracil Plus Radiation for Locally Advanced Rectal Cancer: Updated Results of the FOWARC Study After a Median Follow-Up of 10 Years," by Dr. Jianwei Zhang et al. For a reminder to the audience, the FOWARC study is a Chinese-based study that looked into the treatment of locally advanced rectal cancers with neoadjuvant chemotherapy based regimens with or without radiation. This study was first published back in 2019 where the three-year data showed no difference in three-year disease-free survival over survival between the three study arms. As a reminder of what those arms were, there were one historical control and two interventional arms. The control arm used 5-FU with radiation therapy with five cycles of 5-fluorouracil with radiation during cycles two to four followed by surgery and then seven cycles adjuvantly. Their first interventional arm was the same as the control arm with the addition of oxaliplatin on day 1of each cycle. And lastly, the third arm was FOLFOX only for four to six cycles followed by surgery and then six to eight cycles adjuvantly completing about a total of 12 weeks of chemotherapy. They recruited about 495 patients with 165 patients randomized to each arm. They were relatively well balanced by age, clinical staging and distance from the a**l verge. Median age was about mid-50s with a slight male predominance and patients were primarily stage 3 with 20% to 30% being stage 2. About 30% had clinical T4 disease and about 25% had clinical N2 disease. Median follow up time was 122.5 months or 10 years and their follow up endpoints were disease-free survival, overall survival and local recurrence, and they also performed subgroup analyses based on post surgical pathological staging. Survival was analyzed using Kaplan-Meier method with a significant threshold of p being less than 0.05. About 451 patients actually underwent surgery, which is about 91% of patients. The main reason for not going through surgery was due to refusal but one was due to toxicity and two were due to disease progression in the control arm. Follow up loss rate was about 10% in each group. Now looking at their primary endpoints in their initial study, local recurrence was about 8.8% in the control arm versus 7.9% in the FOLFOX radiation group versus 9.2% in the FOLFOX only group. Distant metastasis was about 30% in each arm and the sites of metastases were primarily in the lung and liver. Now, following up with 10 years, there were only three new events in the chemoradiation group with local recurrence happening at 10.8% in the control arm versus 8% in the FOLFOX RT group versus 9.6% in the chemo only group. These findings were not statistically significant. In their subgroup analysis by pathological staging, they found that pathological CR or complete response had a lower rate of local recurrence compared to those with increasing pathological staging coming in at 3% versus 4.3% versus 11.6% versus 15.8% in pCR versus Stage 1, 2, 3 respectively. And they found no difference in each stage with each interventional arm. Looking at long term survival their 10-year disease free survival showed 52.5% in the 5-FU radiation group versus 62.6% in the FOLFOX RT group versus 60.5% in the chemotherapy only group with no statistically significant difference between three groups. By pathological staging, they found improved 10-year disease survival in those who achieved pathological complete response versus those who did not with 84.3% in the pCR group versus 78.7% versus 56.8% versus 27.7% in the stage 1 versus 2 versus 3 group. And again they found no statistical significance difference between each arm. Now looking at the 10-year overall survival rates between the three arms, in the control arm the 10-year overall survival was 65.9% versus 72.3% in the FOLFOX RT group versus 73.4% in the chemo only group. By pathological stage, again, they showed a statistically significant difference in those who achieved pCR versus those who had pathological stage 1 to 3 disease with overall survival being 92.4% in those who achieved pCR versus 84.9% versus 68.6% versus 48.8% in stage 1, 2, 3 respectively. Now in the discussion, authors mentioned that with a median follow up of 10 years, FOLFOX alone had similar disease-free survival, local recurrence and distant metastasis and overall survival compared to those who received neoadjuvant chemoradiation, justifying the omission of radiation without compromising results or outcomes for each patient. There were no differences in subgroup analysis for disease free survival local recurrence or overall survival based on pathological staging. There were only three new events compared to the last follow up, with local recurrence happening only in the chemo radiation groups. Local recurrence rates at 10 years was about 10%. Compared to other clinical trials such as CAO, ARO or AIO-94, the rate of local recurrence was similar to those historical trials. The authors also compared their findings to the PROSPECT study which looks at the use of total neoadjuvant chemo radiation versus chemotherapy alone, which boasted only about a 2% local recurrence rate. But as a reminder, high risk locally advanced rectal cancers were excluded, mainly those with T4 or N2 disease, which may explain the difference in terms of local recurrence in the PROSPECT versus this study. Another finding is that pathological complete responses are also an important prognostic marker with lower 10-year local recurrence rate, disease-free survival and overall survival with worse outcomes with increased pathological staging. Distant metastasis rates were still at 30%, with the most common site being lung then liver then lymph nodes consistent with other historical studies. Chemotherapy seemed to be better at reducing liver mets than lung metastasis per their findings. In their post hoc analysis of their own study, chemo radiation was also associated with higher incidence of low anterior resection syndrome and persistent ostomy compared to chemotherapy alone, meaning that they had better quality of life with the chemotherapy only approach. In conclusion, a chemotherapy only approach can be safe and a feasible treatment for locally advanced rectal cancer without compromising outcomes. Omission of radiation may reduce the risk of overtreatment and improve quality of life for some of these patients. However, this does not necessarily exclude the role of radiation as it may still play a role in a response escalation approach for those who do not respond to chemotherapy alone. This wraps up today's episode. Thank you for listening to JCO Article Insights. Please come back for more interviews and article summaries and be sure to leave us a rating and review so others can find our show. For more podcasts and episodes from ASCO, please visit asco.org/podcasts. The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement.

24/02/2025

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9 min
23/04/2012

The German CAO/ARO/AIO-94 Randomized Phase III Trial After a Median Follow Up of 11 Years: Implications of Long Term Follow Up

In this study, the implications of long term follow up of the German Rectal Study on clinical practice and future trial design will be discussed.

23/04/2012

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8 min
04/12/2025

What Challenges Will Oncologists Face in 2026?

Dr. Monty Pal and Dr. Jason Westin discuss the federal funding climate for cancer research and the persistent problem of drug shortages, two of the major concerns facing the oncology community in 2026. TRANSCRIPT Dr. Monty Pal: Hello and welcome to the ASCO Daily News Podcast. I am your host, Dr. Monty Pal. I am a medical oncologist and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles. There are always multiple challenges facing oncologists, and today, we discuss two of them that really stand out for 2026: threats to federal funding for cancer research and the persistent problem of drug shortages. I am thrilled to welcome Dr. Jason Westin, who believes that one way to meet these challenges is to get oncologists more involved in advocacy, and he will share some strategies to help us meet this moment in oncology. Dr. Westin is a professor in the Department of Lymphoma and Myeloma at the University of Texas MD Anderson Cancer Center, but he actually wears a lot of hats within ASCO. He is a member of the Board of Directors and has also previously served as chair of ASCO's Government Relations Committee. And he is also one of the inaugural members of ASCO's Political Action Committee, or PAC. He has testified before Congress about drug shortages and many other issues. Dr. Westin, I am really excited to have you on the podcast today and dive into some of these elements that will really impact our community in 2026. Thanks so much for joining us today. Dr. Jason Westin: Thank you for having me. Dr. Monty Pal: You've had such a range of experience. I already alluded to you testifying before Congress. You've actually run for office before. You wear so many different hats. I'm used to checking my PubMed every other day and seeing a new paper out from you and your group, and you publish in the New England Journal [of Medicine] on practice-setting standards and the diseases that you treat. But you've also done all this work in the domain of advocacy. I can't imagine that balancing that is easy. What has sort of motivated you on the advocacy front? Dr. Jason Westin: Advocacy to me is another way to apply our skills and help more people than just those that you're sitting across from at the time. Clinical research, of course, is a tool to try and take what we know and apply it more broadly to people that you'll never meet. And advocacy, I think, can do the same thing, where you can have a conversation with a lawmaker, you can advocate for a position, and that hopefully will help thousands or maybe even more people down the road who you'd never get to directly interact with. And so, I think it's a force multiplier in the same way that research can be. And so, I think advocacy is a wonderful part of how doctors care for our patients. And it's something that is often difficult to know where to start, but once people get into advocacy, they can see that the power, the rewarding nature of it is attractive, and most people, once they get going, continue with that through the rest of their career. Dr. Monty Pal: So, I'll ask you to expand on that a little bit. We have a lot of our younger ASCO members listening to this podcast, folks that are just starting out their careers in clinical practice or academia. Where does that journey begin? How do you get to the point that you're testifying in front of Congress and taking on these bigger sort of stances for the oncology community? Dr. Jason Westin: Yeah, with anything in medicine and in our careers, you have to start somewhere. And often you start with baby steps before you get in front of a panel of senators or other high-profile engagement opportunities. But often the first setting for junior colleagues to be engaged is doing things – we call them "Hill Days" – but basically being involved in kind of low-stakes meetings where you're with a group of peers, some of whom have done this multiple times before, and can get engaged talking to members of representatives' offices, and doing so in a way where it's a natural conversation that you're telling a story about a patient in your clinic, or that you're telling a personal experience from a policy that impacted your ability to deliver optimal care. It sounds stressful, but once you're doing it, it's not stressful. It's actually kind of fun. And it's a way that you can get comfort and skill with a group of peers who are there and able to help you. And ASCO has a number of ways to do that, both at the federal level, there's the Hill Day where we each April have several hundred ASCO members travel to Capitol Hill. There's also state engagement that can be done, so-called visiting at home, when representatives from the U.S. Congress or from state legislators are back in district. You can meet with your own representatives on behalf of yourself, on behalf of your organization, and advocate for policies in a way that can be beneficial to your patients. But those initial meetings that are in the office often they're low stakes because you could be meeting not with the representative but with their staff. And that staff sometimes is as young or even younger than our junior colleagues. These sometimes can be people in their 20s, but they're often extremely knowledgeable, extremely approachable, and are used to dealing with people who are new to advocacy. But they actually help make decisions within the office. So it's not a waste of time. It's actually a super useful way to engage. So, it's that first step of anything in life. The activation energy is always high to do something new. But I'd encourage people who are listening to this podcast already having some level of interest about it to explore ways that they could engage more. Dr. Monty Pal: You know, I have to tell you, I'm going to riff on what you just said for a second. ASCO couldn't make it any easier, I think, for folks to participate and get involved. So, if you're listening to this and scratching your head and thinking, "Well, where do I begin? How do I actually sign on for that meeting with a local representative?" Go to the ASCO ACT Network website. And I'll actually talk to our producer, Geraldine, to make sure we've got a link to that somewhere associated with this podcast after it's published, Jason, but I actually keep that on my browser and it's super easy. I check in there every now and then and see if there's any new policy or legislation that ASCO, you know, is sort of taking a stance on, and it gives me some fodder for conversation with my local representatives too. I mean, it's just an awesome, awesome vehicle. I'm going to segue right from there right to the issues. So, you and I are both at academic centers. You know, I think this is something that really pervades academia and enters into implications for general clinical practice. There's been this, you know, massive sort of proposal for decreased funding to the NCI and to the NIH and so forth. Tell us what ASCO is doing in that regard, and tell us perhaps how our community can help. Dr. Jason Westin: We live in interesting times, and I think that may be an understatement x 100. But obviously investments in research are things that when you're at an academic center, you see and feel that as part of your daily life. Members of Congress need to be reminded of that because there's a lot of other competing interests out there besides investing in the future through research. And being an elected representative is a hard job. That is something where you have to make difficult choices to support this, and that may mean not supporting that. And there's lots of good things where our tax dollars could be spent. And so, I'm sympathetic to the idea that there's not unlimited resources. However, ASCO has done an excellent job, and ASCO members have led the charge on this, of stating what research does, what is the benefit of research, and therefore why should this matter to elected representatives, to their staff, and to those people that they're elected to serve. And ASCO has led with a targeted campaign to basically have that message be conveyed at every opportunity to elected representatives. And each year on Hill Day, one of the asks that we have is to continue to support research: the NCI, NIH, ARPA-H, these are things that are always in the asks to make sure that there's appropriate funding. But effectively playing offense by saying, "It's not just a number on a sheet of paper, this is what it means to patients. This is what it means to potentially your loved ones in the future if you are in the opposite situation where you're not on the legislative side, but you're in the office receiving a diagnosis or receiving a difficult piece of news." We only have the tools we have now because of research, and each breakthrough has been years in the making and countless hours spent funded through the engine of innovation: clinical research and translational research. And so ASCO continues to beat that drum. You mentioned earlier the ACT Network. Just to bring that back again is a very useful, very easy tool to communicate to your elected representatives. When you sign up on the ASCO ACT website, you get emails periodically, not too much, but periodically get emails of, "This is a way you can engage with your lawmakers to speak up for this." And as you said, Monty, they make it as easy as possible. You click the button, you type in your address so that it figures out who your elected representatives are, and then it will send a letter on your behalf after like five clicks to say, "I want you to support research. I want you to vote for this particular thing which is of interest to ASCO and by definition to members of ASCO." And so the ACT Network is a way that people listening can engage without having to spend hours and significant time, but just a few clicks can send that letter to a representative in Congress. And the question could be: does that matt

04/12/2025

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22 min
8 ENE

Association Between EOL SACT and Healthcare Utilization

Host Dr. Davide Soldato and guests Dr. Kerin Adelson and Dr. Maureen Canavan discuss JCO article "Association Between Systemic Anticancer Therapy Administration Near the End of Life with Health Care and Hospice Utilization in Older Adults: A SEER Medicare Analysis of End-of-Life Care Quality," highlighting adverse outcomes for patients who receive any type of systemic anticancer therapy(SACT) at EOL (end of life) and the need for better communication between oncologists and patients regarding expected risk and benefits of such treatments to properly align goals-of-care. TRANSCRIPT Dr. Davide Soldato: Hello and welcome to JCO After Hours, the podcast where we sit down with authors from some of the latest articles published in the Journal of Clinical Oncology. I am your host, Dr. Davide Soldato, medical oncologist at Ospedale San Martino in Genoa, Italy. Today, we are joined by JCO authors Dr. Maureen Canavan, epidemiologist and associate research scientist at Yale Cancer Outcomes, Public Policy and Effectiveness Research Center; and by Dr. Kerin Adelson, Chief Quality and Value Officer, medical oncologist, and clinical researcher on health services and clinical care delivery at MD Anderson Cancer Center. In the manuscript "Association Between Systemic Anticancer Therapy Administration Near the End of Life With Health Care and Hospice Utilization in Older Adults: A SEER-Medicare Analysis of End-of-Life Care Quality." that you recently published in the JCO, you performed an analysis that included more than 30,000 older adults in the SEER-Medicare database, and you observed that 7.6% of these patients received any systemic anticancer medication within 30 days of death. So, I wanted you to explain why you thought that this was a priority right now, and whether there was any previous data that was published in the literature, and if you think that there was any significant gap in the literature that led you to the research you just published. Dr. Kerin Adelson: We have published a series of articles looking at real-world trends in patterns of care, particularly related to systemic anticancer therapy at the end of life. This has been gaining increasing focus in recent years because of the understanding that when patients stay on systemic anticancer therapy, that is often a surrogate for a lack of goal-concordant care. So, patients who continue to receive systemic therapy have worse quality of life, are more likely generally to have a medicalized death, and less likely to use hospice. And what our prior work has shown is that more and more we are seeing patients using immunotherapies and targeted therapies towards the end of life. No prior work had really comprehensively examined whether these novel therapies were associated with those same patterns of care increases in acute care utilization and decreases in hospice. Dr. Davide Soldato: So basically, the data that we had up until that point was mostly with cytotoxic chemotherapy, and the emergence of this new treatment, which frequently are thought to be less toxic and so less problematic also in the end of life, led to this research. Is that correct? Dr. Kerin Adelson: Correct. Dr. Maureen Canavan: I would also build on that. I think that as the landscape of cancer care changes, it is important to really understand the availability of treatments, but then also, as Kerin noted, it is important to focus on goal-concordant care. We have established literature, studies we have done and some other studies that have looked at cytotoxic chemotherapy, but with the emergence of these targeted therapies, we really did not know a few things. We did not know the rates of utilization in a large national population, and how that was associated with these elements of medicalized death like ED use, hospitalizations, acute care use. So this was really a question that we had going into it. How can we expand the knowledge base so that both patients and providers can be more cognizant when thinking about goals of care conversations and ensuring that that is in place? Dr. Kerin Adelson: And our work has kind of evolved to answer some critical questions. So, one of our early papers looked at different rates of systemic anticancer therapy at the end of life, and that is where we showed that we were seeing a lot more immunotherapy and targeted therapy. And then we asked the question, well, oncologists generally when they give these treatments, they are hoping that those treatments are going to work and help the patients live longer. So we did another paper where we actually looked at practices who were more aggressive near the end of life and whether they had better overall survival than practices that were less aggressive, accounting for the fact that there could be populations of patients who benefited. And in fact, we showed there was no survival difference. So then this paper sort of answered the question: Well, if it is not having benefit, is this treatment actually doing harm? And this study gets at that question: What are the harms of continuing patients on therapy past the point of benefit? Dr. Maureen Canavan: And I think building off of that, the use of the SEER-Medicare database is a quite robust database. So in this, we have very specific data we can track. We can track the exact type of treatment they had, you know, was it a targeted therapy? Was it immunotherapy? So looking at those subclasses of therapy. We were also able to directly link it within that time frame to the acute care utilization, a limitation that we had in some of our previous work that that data was not always available. So it is more focused in the sense that we were looking at older adults, so patients 66 years of age and older, but we were able to get those individual metrics. So to Kerin's point, we did not see the survival benefit. What do we see then for these medicalized death elements? So the higher rates of all of them across the board. Dr. Davide Soldato: So coming back to the cohort and to the data that you utilized, Dr. Canavan mentioned the use of the SEER system to analyze these data. You already mentioned that you included mostly older adults, so those aged 66 and more. And also there was a little bit of restriction regarding the fact that the patient needed to be covered by Medicare in the last year of death concerning Part A and Part B, and the last 30 days from death concerning Part D. So I just wanted to ask a little bit of a question regarding these findings and whether you think that we also need additional work, especially in the younger population because I think it is something that all of us who work in oncology have seen. The aggressiveness, and this is also something that you showed in your data, tends to increase as the age of the patient tends to decrease. So we tend to be more aggressive towards younger patients. So just a comment on that on the population and generalizability of the findings. Dr. Maureen Canavan: Yeah, I will start with the data question element. Thank you. I think there are a few things to point out for that. So in terms of the restriction to ensure that they had continuous Part D coverage, that was necessary for us to track their oral medication use during that time. So kind of an easy response. The Part A, Part B requirement, it is actually pretty widely used in studies of SEER-Medicare data, and that is you want to establish the patient population, that they are not getting treated with another insurance provider in some way that you are not able to track. So that ensures that we can track not only their systemic anticancer therapy use but also when we are trying to make sure that we are controlling for confounders like chronic conditions and stuff, we are able to track the presence of chronic conditions. So we wanted to make sure we were not biasing the data, so I think that was an important consideration. You do point out very wisely that there are then limitations with the generalizability, and I think we would be lacking if we did not account for that. But I think it is important to establish this baseline relationship association, and then you can step out, we will say, to more diverse populations. So I think we could potentially maybe try to relax the timeline to see if people that might have influx in and out of the Medicare system are still seeing those same rates. I think it is likely they would. But I think to the bigger point that you bring up is that establishing this within the older adults where, you know, we do see as they get older maybe less rates of systemic therapy, extending it to the younger population. There is a challenge with that in that just that data is not available to the robust level that SEER-Medicare is. Both Kerin and I have noted that there is the possibility to look within one specific insurance provider type. Again, recognizing the limitations of the generalizability, but always slowly pushing the needle, finding out more about younger adult populations. And I think this is maybe in an ideal world, but setting the precedent that we really do need to track this on a national scale within younger adults because they do have the need. We do see these higher rates of utilization, and really making sure again with the mindset always of the best interest of patients and the most informative to providers in how we are looking at care. So I think generalizability is definitely a goal. However, there are limitations of the availability of data for younger populations and I think that they are a necessary restraint that all researchers should acknowledge. Dr. Kerin Adelson: Yeah, I think it is important for our audience to understand that health services research and large database research is really limited by what databases are available and what are the characteristics of those databases. So we have done a lot of work in an electronic health record database, and there y

8 ene

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23 min

ASCO Podcasts by the American Society of Clinical Oncology, cover a range of educational and scientific content, offering enriching insight into the world of cancer care. Hear innovative interviews with the authors, researchers, and clinicians who are defining today’s standard of care and tomorrow’s breakthroughs. You can find all ASCO podcasts and limited series at ascopubs.org/podcasts