ASCO Daily News

The ASCO Daily News Podcast features oncologists discussing the latest research and therapies in their areas of expertise.

  1. APR 2

    Groundbreaking Results Shift Treatment Paradigm in High-Risk Smoldering Multiple Myeloma

    Dr. Monty Pal speaks with internationally acclaimed hematologists Dr. Vincent Rajkumar and Dr. Saad Usmani about the AQUILA trial in high-risk smoldering multiple myeloma, as well as advances in CAR-T and other evolving treatment strategies in the myeloma space. TRANSCRIPT Dr. Monty Pal: Hello everyone and welcome to the ASCO Daily News Podcast. I'm your host, Monty Pal. I'm a medical oncologist, underline medical oncologist, a professor, and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles. You're going to understand why I underlined "medical oncologist" there. I'm actually on the line today with two amazing hematologists. Today, we're going to actually explore treatments for high-risk smoldering multiple myeloma following the FDA's approval last year of daratumumab for the first-ever treatment of this indication. Now, this is based on the AQUILA trial, and this represents a huge shift in our traditional watch-and-wait approach to active disease interception. We're going to consider whether this landmark trial published in The New England Journal translates to day-to-day practice. I think it does, and we'll certainly make an argument for that. And I'm so fortunate today to have two internationally acclaimed experts here in the conversation: Dr. Vincent Rajkumar, senior author on the manuscript, and Dr. Saad Usmani, also an expert in his own right in myeloma. Dr. Rajkumar is the lead investigator of the AQUILA study. He's a professor of medicine and consultant in the divisions of hematology and hematopathology at the Mayo Clinic in Rochester, Minnesota. He actually chairs the Myeloma, Amyloidosis, Dysproteinemia Program. He is also editor-in-chief of the Blood Cancer Journal. Dr. Usmani, he and I actually go way, way back. We actually did the AACR Molecular Biology in Clinical Oncology course, I want to say in 2006, so this is our 20-year anniversary, Saad. He's the chief of the myeloma service at the MSK Cancer Center and a professor of medicine at the Weill Cornell Medical College in New York.  Saad, Vincent, welcome. Dr. Saad Usmani: Thank you so much for having me, Monty. Dr. Vincent Rajkumar: Yeah, thanks, Monty. A pleasure to be here. Dr. Monty Pal: Thanks. And just a quick note for our listeners, all of our disclosures are available in the transcript of this episode. First off, Saad, did I get that right? Was it 2006 when we did that course together? Dr. Saad Usmani: Yeah, 20 years. We are coming up to our 20-year anniversary. It's remarkable to have seen our careers move the way they have, Monty. Dr. Monty Pal: Oh my gosh. And for all the fellows who are on the line, that AACR Molecular Biology and Clinical Oncology course, it's sometimes overlooked. Wonderful primer on translational science. Okay, now we're going to get to the heart of the matter here, the AQUILA trial. So this was a study, Vincent, that you led. I wonder if you'd walk us through the primary endpoints in the study. What are we looking at in the AQUILA trial specifically? Dr. Vincent Rajkumar: Thanks so much. Again, as you mentioned, smoldering multiple myeloma has just been a condition that we watch and wait. And the first thing that I want to clarify here is that the AQUILA trial is looking at only a subset of smoldering multiple myeloma. That is the high-risk smoldering multiple myeloma. It was defined the way high-risk smoldering myeloma was defined at the time the trial was designed. It randomized 390 patients. One arm got daratumumab single agent in an attempt to delay progression to active myeloma and possibly prolong survival. And the other arm was the traditional observation. The primary endpoint, therefore, was time to active multiple myeloma. Other endpoints included time to when patients needed to start therapy for active multiple myeloma, which can vary based on physician judgment, and overall survival. Of course, response rate, complete response rate, and others were also endpoints. Dr. Monty Pal: That's interesting. And you know, I wanted you to riff a little bit on this definition of high-risk smoldering myeloma. Can you tell our audience how that's sort of evolved over the years? Dr. Vincent Rajkumar: Yes. I mean, if you step back, monoclonal gammopathy of undetermined significance has only a 1% per year risk of progression. Smoldering multiple myeloma, all comers have a 10% per year risk of progression. And over the years, trials have been done in the whole population, and then more recently, we felt we should really focus on the people with high-risk smoldering, defined as a 50-50 risk of progression in 2 years. That's like a 25% per year risk of progression in the first 2 years, which is a very high risk for the patient and something that would justify prophylactic intervention. And that definition initially was based on just high levels of monoclonal protein like more than 3 grams, the IgA subtype of myeloma, the suppression of uninvolved immunoglobulins. Others have used bone marrow flow cytometry markers, cytogenetics. Those combinations of factors were available at the time the AQUILA trial was designed, and a select combination was used. Later on, we found that we could match almost all of that in a very simple risk stratification using just the percentage of bone marrow plasma cells, the level of the M-spike, and the free light chain ratio, all three of which are available to all patients with smoldering at the time of diagnosis. So you don't need any special testing. So more than 20% plasma cells, more than 20 for the light chain ratio, and more than 2 grams for the M-spike. If someone has any two of the three, that is high-risk smoldering multiple myeloma according to the IMWG, but that definition, of course, came in 2020 after the AQUILA trial completed accrual. Dr. Monty Pal: That's interesting because this sort of flips the traditional paradigm where biomarkers get more and more complex as time goes on. Am I right in saying this sort of simplifies things a little bit? It uses standard laboratory or clinical parameters to gauge this category? Dr. Vincent Rajkumar: Absolutely. People were using suppression of uninvolved immunoglobulins, and those levels are not standardized, often vary by race. Also, the other aspect was the abnormal plasma cells on flow cytometry. Again, labs define it differently. So this makes it much more simple. But the IMWG also did a separate exploratory cohort within that paper where we added cytogenetics and we added scoring systems to improve on this further. So it simplified it for regular clinical practice and for like trials. But if you have a patient in front of you, the IMWG paper also has more complex scoring systems where you can take more than 20; 21 is more than 20, so is 51. And so, you can use the actual numbers that a patient has, additional variables like cytogenetics, and get a more refined estimate of what is the true risk of progression. Dr. Monty Pal: That's really helpful. Now, you told us about the primary endpoints, you've helped us define high-risk smoldering myeloma. Can you give us a sense of the top-line results from AQUILA? Dr. Vincent Rajkumar: Yes, I think the most important one was the primary endpoint, time to multiple myeloma, was at 5 years, the progression-free survival was 63% in the daratumumab arm compared to 41% in the observation arm. So, you know, approximately 60% of patients in the observation arm had already progressed by 5 years. And that number was about 40% for the daratumumab arm. We also looked at time to starting myeloma therapy, which is clinically actually quite meaningful because, you know, myeloma therapy means patients get a quadruplet for induction, they get stem cell transplant, they get endless maintenance, they get ongoing therapy virtually for the entire duration. So, preventing the need for myeloma therapy is in and of itself, I think, a major endpoint. And that at 3 years, 40% of people in the observation arm required full myeloma therapy compared to only 20% in the daratumumab arm. So there's a significant reduction in the risk of developing active myeloma as well as the need for myeloma therapy by using a time-limited 3 years of daratumumab single agent. Dr. Monty Pal: Perfect summary of the results. And maybe, Saad, I'm going to bring you into the conversation now. How does this sort of influence your day-to-day practice for smoldering myeloma? Is this something that you've incorporated for that high-risk subset? Dr. Saad Usmani: Thank you, Monty, and I agree. I think that's a really nice summary from Vincent. This study is very important for several reasons. It's actually the third clinical trial that has demonstrated that patients who are in the high-risk smoldering myeloma category benefit from an early intervention that delays the progression to active myeloma or to end-organ damage. And so having a nuanced discussion with our patients in the clinic becomes very important. Having this discussion around as an option becomes very important. And like Vincent said, when we look at that high-risk smoldering myeloma patient population, someone who has 22, 23% plasma cells versus, you know, 45, 50, you know, it's going to be a different discussion each time. But I think it's a very important first step. And I think this sets up the stage for us to design clinical trials where we can ask other questions on what would be better than daratumumab alone in terms of delaying progression in these patients. The other thing that I do want to highlight, and Vincent touched upon this a little bit, that the treatment in this clinical trial was for a fixed duration of treatment. So it was not forever treatment. This is maybe something that Vincent, you can even comment on a little bit more because the question we get after having this discussion is, "Okay, what do we do with patients who are going to be progressing to active myeloma?" Whether we ca

    20 min
  2. MAR 19

    Navigating Therapeutic Advances in EGFR-Mutated NSCLC

    Dr. Monty Pal and Dr. Vamsi Velcheti discuss the evolving treatment landscape in EGFR-mutated non-small cell lung cancer, including landmark trials like FLAURA2, novel drug therapies, and the growing importance of ctDNA and MRD testing. TRANSCRIPT Dr. Monty Pal: Hello, and welcome to the ASCO Daily News Podcast. I'm your host, Dr. Monty Pal. I'm a medical oncologist and professor and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles. Today, I'm truly delighted to introduce Dr. Vamsi Velcheti, who's a professor of medicine and the chief of hematology-oncology at the Mayo Clinic in Jacksonville, Florida. We'll be discussing the expanding treatment landscape in EGFR-positive lung cancer and how to navigate the challenges of balancing treatment efficacy, toxicity, and patient quality of life in the EGFR-positive space.  Just FYI, our full disclosures are available in the transcript of this episode.  Vamsi, it's so great to have you on the podcast. Thank you so much for being here. Dr. Vamsi Velcheti: Thank you, Monty. It's a pleasure to be here with you. It's a really exciting topic and there are a lot of updates in the EGFR space. Dr. Monty Pal: So, I'm going to need your help with this because I'll be honest with you, I see very little lung cancer, if any, in my practice. I'm pretty much exclusively kidney cancer these days. I'm coming on 20 years at City of Hope now, and I still remember when trials like ECOG 1599 were presented with, you know, platinum doublets. And, of course, the field has changed a lot since then. But tell us a little bit about the first-line landscape, and I think just for the sake of time, we're going to stick with EGFR-positive disease here. What does it look like these days? Dr. Vamsi Velcheti: Monty, the foundation of care remains the third-generation EGFR inhibitors. These are selective EGFR inhibitors, like osimertinib. We've had an evolution of the development of these TKIs. Like, you know, we had the first-generation, second-generation, not-so-selective EGFR inhibitors. Now we have mutant-selective EGFR inhibitors in the clinic, and they're doing a really good job. And these are quite effective in patients who have classical activating mutations. But the reality is that these have not been transformative. These agents have fundamentally changed the response patterns, excellent CNS penetration, and very good tolerability profile. However, we don't see a lot of durability in terms of the response. So, what's different today is now there have been several trials in combination with these third-generation EGFR inhibitors that have really laid the foundation of how we kind of think about EGFR-positive disease. At the high level, there are a lot of challenges to selecting the patients for these combination-based modalities. I'm assuming we'll be talking more about these different trials and different approaches. Some of these combination-based strategies have really moved the needle in terms of improving overall survival and really improving long-term outcomes and durability in our patients. Dr. Monty Pal: And we are going to get into the weeds on this in just a moment. But I did kick off this podcast talking about chemotherapy, ECOG 1599. It does seem as though chemotherapy is still a component of management in advanced non-small cell lung cancer. So, can you tell us about, perhaps first, you mentioned osimertinib, you know, some of these next-generation EGFR inhibitors. Tell us about the role of chemo plus osimertinib. Dr. Vamsi Velcheti: That's exactly where I was going with the combination-based strategies. You know, we first started off with our earlier trials in the EGFR space evaluating the question of, are targeted therapies, are these highly effective, third-generation, EGFR-selective inhibitors, superior to platinum-doublet chemotherapy? And we've had multiple trials demonstrating that, like the FLAURA trial and in the past with second-generation EGFR inhibitors like erlotinib and gefitinib and afatinib. So, we know that these TKIs actually perform better than platinum-doublet chemotherapy. Now, we have a large, global, phase 3 trial data from the FLAURA2 trial, which looks at the question, "Hey, you know, osimertinib is better than chemotherapy, platinum-doublet chemotherapy. Can we do even better by combining osimertinib with platinum-doublet chemotherapy?" So, FLAURA2 answered that question. This is a large, phase 3 trial, and it's a positive trial with improved durability of disease control and improving overall survival with combination with chemotherapy. So, it's a very important and landmark trial, and essentially combining osimertinib with a platinum-based chemotherapy improved responses, deepened responses, and improved overall survival and really changing the disease trajectory. And this strategy is definitely compelling, especially in patients who have certain clinical high-risk features like, you know, patients who have high disease burden or patients who are sometimes having rapid disease progression early on osimertinib, especially with patients who have a lot of visceral disease burden. So, intensifying treatments up front could alter the natural trajectory of the disease. Dr. Monty Pal: So, you sort of alluded to this in that last part there, but is that kind of how you in clinical practice select? Is it based on, you know, visceral involvement? Is it based on rapidity of disease where you think about adding chemotherapy to osimertinib? Maybe you can give us the corollary. Which patients do you just use osimertinib alone in, for instance? Dr. Vamsi Velcheti: Definitely, there are some patients who have low disease burden and they have the classical mutations, like an exon 19 deletion. And these patients, especially if they don't have a lot of disease burden, they don't have CNS involvement, there may be a subset of patients who could just do fine on osimertinib of course, with close monitoring of the disease. I guess we'll get into that later, how do we do that with either ctDNA or like closer imaging or both. So, there may be some opportunity to kind of escalate patients' treatments based on certain clinical characteristics or radiographic characteristics or certain biological characteristics informed by ctDNA or other approaches. Dr. Monty Pal: No, that's interesting. And you're right, we will chat about ctDNA in just a bit. But before we get there, I think one of the big agents that has really sort of come to the fore in advanced non-small cell lung cancer is amivantamab. I've heard a lot about this in the context of even kidney cancer because in certain subsets, I'm interested in MET-directed therapies and so forth, right? So maybe tell us a little bit about the mechanism of amivantamab first, and then maybe tell us about this pivotal MARIPOSA trial where it's combined with lazertinib. Dr. Vamsi Velcheti: So, the MARIPOSA trial compared lazertinib alone with amivantamab plus lazertinib. And this trial demonstrated overall survival advantage, and there were key differences in terms of tolerability and the safety of amivantamab, which is an EGFR and MET bispecific, and there were certain kind of unique toxicity profiles that make it a little different than the intensification approach with chemotherapy through the FLAURA2 trial. So, there's a trade-off in terms of the toxicity profile. It's a different agent and a different management protocol in terms of dermatological toxicity management that clinicians need to be comfortable with. And also, there are certain unique issues in terms of amivantamab; there's a higher rate of infusion-related reactions, there's an increased risk for edema and VTEs because of amivantamab. Certainly a different toxicity profile, different management paradigm there in terms of longitudinal care of these patients requiring dermatological care and like, you know, close monitoring and prophylaxis VTEs. But having said that, definitely it's a different strategy, and it kind of changes the biology and the natural history of the cancers, and we do see some durability of responses that we see with the MARIPOSA. So, it's certainly a great alternative, at least for some patients. Dr. Monty Pal: That was a great overview of MARIPOSA. Now comes the really difficult question, which is, how do you choose between the two? You have these two great options, right, for EGFR-positive patients. You've already highlighted some of the distinctions in terms of toxicity. I think the audience is well aware of the side effects of chemo-doublet, perhaps even the EGFR-based therapies. Amivantamab is quite new. Give us a sense of how you in clinical practice decide between the two potential options here. Dr. Vamsi Velcheti: Yeah, I think that's the big challenge. I think these are two independent strategies that have evolved through the phase 3, and both of them have demonstrated overall survival benefit. So, the way I think about this is in three dimensions, right? Like, the disease biology, the patient priorities, and feasibility of care delivery. So, when I talk about the disease biology, you know, the mechanism is very different, and MET is a very dominant driver of disease in EGFR-altered patients and it's a significant mechanism of resistance, acquired resistance to TKIs. So, certainly I think there's a patient population that could benefit from a MET-directed therapy up front. However, we don't have great data to kind of really demonstrate how using amivantamab in the front line is going to change that. And are there like perhaps like some patients who we could identify who would benefit from such a strategy? Very recently, there have been some approvals in the second-line setting in lung cancer, not in the EGFR space, but like in generally in lung cancer, with the MET ADCs, and those drugs are approved with a companion diagnostic, which requires MET IHC testing. So,

    19 min
  3. MAR 5

    Highlights From the 2026 ASCO GU Cancers Symposium

    Dr. Monty Pal and Dr. Andrea Apolo discuss practice-changing studies and other novel approaches in bladder, kidney, and prostate cancers that were presented at the 2026 ASCO Genitourinary Cancers Symposium. TRANSCRIPT Dr. Monty Pal: Hello and welcome to the ASCO Daily News Podcast. I'm your host, Dr. Monty Pal. I'm a medical oncologist, professor and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles.  And today is super exciting, we're highlighting key abstracts that were presented at the 2026 ASCO GU Cancers Symposium, and I'm just delighted to be joined by the chair of this year's meeting, who is also a dear friend, Dr. Andrea Apolo. Dr. Apolo serves within the Center for Cancer Research at the NCI as head of the Bladder Cancer Section, and she is also acting deputy chief of the Genitourinary Malignancies Branch.  Welcome, Andrea, it is so great to have you on the podcast. Dr. Andrea Apolo: Oh, thank you so much for having me. What a great ASCO that we had, it is really exciting, lots of really great data. So I look forward to chatting about it. Dr. Monty Pal: Excellent. And you know, our full disclosures are available in the transcript of this episode in case our listeners want to have a peek.  The theme of this year's GU meeting was "Patient-Centered Care: From Discovery to Delivery." I love that theme. And really, this is one of the most competitive meetings out there, more than 850 abstracts being presented on high-impact science. Andrea, I just wanted to get right into it and dive into what I think we both felt were some of the most exciting abstracts of the meeting.  And the first of those is one that I know is near and dear to your heart, being a bladder cancer expert yourself, and that is the KEYNOTE-B15 study presented by Matt Galsky. Can you give us a flavor for what that study entailed and some of the key results? Dr. Andrea Apolo: Yeah, I think this was kind of the missing study that we have been waiting for since we saw the EV-302 data in metastatic disease in the frontline setting. We wanted to know how well this combination would work in muscle-invasive bladder cancer patients. And we saw half of that puzzle, you can say half of the piece of the puzzle, when we saw the data at ESMO, the EV-303 data in patients that were cisplatin-ineligible. And then now we are getting the full story with patients that are platinum-eligible, cisplatin-eligible, with the EV-304 data. So that study randomized patients to receive chemotherapy, so different than the EV-303 where the patients were randomized just to receive the radical cystectomy. These patients were randomized to receive neoadjuvant EV plus pembro and then adjuvant EV plus pembro versus neoadjuvant gemcitabine and cisplatin with no adjuvant component to the control arm. So I think this is a really, really important study. Dr. Monty Pal: And share with us some of the results because this in my mind is definitely practice-changing. This is one of those studies that I think you walked into the office on Monday and you are like, "Okay, this is what I am doing now," right? Dr. Andrea Apolo: Yeah. So the study was positive. The primary endpoint was event-free survival, and it met the primary endpoint. The secondary endpoint of overall survival was also met. So really, really great results. Consistent with what we saw with EV-303, the median event-free survival was not reached for the EV plus pembro arm, and it was 48 months for the patients receiving gem-cis. And then looking at the 24-month estimated event-free survival, it was 79% for the EV plus pembro and 66% for the chemo, the gem-cis arm. And that was a hazard ratio of 0.5. So that is really exciting. That is the event-free survival. And then the overall survival, the medians were not reached for either arm, but when you look at the 24-month estimated overall survival, it was 87% for the EV plus pembro versus 81% for the gem-cis, and that was a hazard ratio of 0.65. So very positive study.  And then another question that we had was the pathologic CR rate. Very consistent with what we saw with the EV-303, the pathologic response rate was about 56% for the patients that received EV plus pembro and about 32%, 33% for the patients that received gem-cis. So very consistent with the findings that we have been kind of seeing in phase 2 studies, and this is a pT0N0, so that is important. Dr. Monty Pal: So Andrea, you know, I think that the big question in folks' minds is at this point, we see the data from NIAGARA, cis-gem-durva, we have now seen this data. Put it into context for us. Is there a patient in this day and age who maybe shouldn't get IO altogether, who should maybe get the NIAGARA regimen as opposed to EV-pembro in this context? What are your thoughts there? Dr. Andrea Apolo: Now, that is a great question. I would say with this data, it is very enticing to give EV pembro to our patients in the perioperative setting, and for that to be the new standard of care for all patients, regardless of cisplatin eligibility. So similar to what we saw with EV-302 really changing the standard of care in the frontline setting, I think these two studies, the EV-303 and the EV-304, change the standard of care for patients with muscle-invasive bladder cancer in the perioperative setting, and this should be the new standard of care if the patients don't have a restriction to receiving an immunotherapy. Dr. Monty Pal: I totally agree with that assessment. It is great to hear it from the expert's mouth as well. Thanks a lot for that, Andrea.  The next abstract I wanted to tackle is one that is, I would say, near and dear to my heart because I know these folks really well. It is led by the SWOG group, and this is SWOG S1602. The number there for the audience gives you a sense of how long the study has been running for. The 16 prefix means it is something that we kicked off back in 2016. So this study is really 10 years in the making, right? So Rob Svatek presented this data. It is interesting, right, because it addresses this issue of the BCG (Bacille Calmette-Guérin) shortage, right, where we have needed to sort of rely potentially on other alternative sources or regimens and so forth. Tell us about this trial, Andrea. Dr. Andrea Apolo: This is one of my favorite studies. We talked about putting it in the main oral abstracts, but we put it in one of the educational sessions that talked about non-muscle-invasive bladder cancer because we thought that would be the best audience for it. But it doesn't take away from how important this abstract is, and the tremendous effort that went into the study. Almost a thousand patients enrolled. I think 984 were eligible to enroll in this study. So it is a very high enrolling, randomized, cooperative group study in high-grade non-muscle-invasive bladder cancer. And really the study was designed to address two questions. One is the BCG shortage and can we use a different strain, Tokyo versus TICE? And whether there is a priming effect if you gave intradermal BCG to patients with non-muscle-invasive bladder cancer, can that enhance the effect if you gave it a little bit earlier? I think the study is really important, and it met its primary endpoint, which was it is not inferior to TICE. The findings were really terrific in terms of the outcomes. Numerically. When you look at the endpoint, it looked like the Tokyo strain was as good, if not maybe a little bit better, but not statistically significant than the TICE. And then they broke it down by carcinoma in situ, they broke it down by papillary tumors, and the Tokyo strain was non-inferior in both of those instances. But interestingly, the intradermal BCG did not change outcomes. There was really no priming effect, which was really backed up by pre-clinical data that there would be, but there wasn't a priming effect when the intradermal BCG was given in the Tokyo strain. So that was a really, really interesting finding. But a great study, really important outcomes in the field for non-muscle-invasive bladder cancer. Dr. Monty Pal: Totally. And it just seems like we can't get away from BCG, right? You know, as hard as we try, I mean, I appreciate the studies that sort of build on it that are emerging right now, but it seems like BCG at least for the foreseeable future is kind of here to stay, right? Dr. Andrea Apolo: It works. It is one of the most effective treatments we have for non-muscle-invasive bladder cancer. So, you know, I think it is here to stay and, you know, we need to find alternatives in terms of strains so we don't deal with this shortage that we have been dealing with for so many years now. Dr. Monty Pal: Yeah, indeed. Moving on to some of the other highlighted studies from the meeting, you had mentioned the EV-303 data, so we probably don't need to rehash that study design in much detail. But there was also a rapid oral abstract presented by Dr. Ullén that I think is of interest here, right, that really hones in on pathologic outcomes and DFS from that trial. Do you mind just outlining that for our listenership? Dr. Andrea Apolo: This is the KEYNOTE-905, also known as the EV-303 study. This is a follow-up to the EV-303 data looking at the pathologic response rates, looking at the downstaging effect, looking at the surgical margins after treatment with the neoadjuvant EV plus pembro in the 303. Now, remember in the 303, patients got three cycles of neoadjuvant EV plus pembro and then six cycles in the adjuvant setting. A little bit different than the 304, where they got four cycles, which is really kind of the standard in the neoadjuvant setting, and then five cycles in the adjuvant setting. So still a total of nine cycles. But in the 303, the treatment arm had no systemic therapy, so it was just radical cystectomy. And they looked at the negative margins that you get with the EV plus pembro treatment, which was 92.6% ve

    20 min
  4. FEB 19

    Personalizing Treatment in Head and Neck Cancers

    Dr. Monty Pal and Dr. Ari Rosenberg discuss the evolution of treatment strategies in head and neck cancers, including the challenges of treating both HPV-positive and HPV-negative disease and the emergence of blood-based biomarkers to advance personalized therapy across different subtypes. TRANSCRIPT Dr. Monty Pal: Hello and welcome to the ASCO Daily News Podcast. I'm your host, Dr. Monty Pal. I'm a medical oncologist, professor, and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center in Los Angeles. Today, we're going to explore the evolving landscape of treatment strategies in head and neck cancer management, including locoregionally advanced head and neck squamous cell carcinoma, which happens to be on the rise in United States, in part due to spike in HPV-mediated oropharyngeal cancers. We're also going to discuss the emerging strategies of using blood-based biomarkers to really advance personalized therapy. Joining me for this discussion is Dr. Ari Rosenberg. He's a medical oncologist focused on head and neck cancer, and he's an associate professor – congratulations on the recent promotion – at the University of Chicago. The University of Chicago has really produced luminaries in this field, Dr. Rosenberg included. I've had the pleasure of getting to know Dr. Ezra Cohen over the years, who really had his grounding there, and of course Everett Vokes, former ASCO President. I'm really looking forward to this conversation, Ari. Thanks so much for joining us. Dr. Ari Rosenberg: Thanks, Monty. Thanks for the invitation. Dr. Monty Pal: You got it. And just a quick note for our listeners, our full disclosures are going to be in the transcript at the end of this episode. So let's start with the basics, if you don't mind. So, head and neck cancers are very diverse and they're challenging, right? In the sense that they're near vital organs, the treatments, you know, as we all saw during fellowship, if not now in clinical practice. They can really have such a major impact on vital organ function, speech, swallowing, et cetera. Can you just comment on head and neck cancers that are on the rise in the U.S.? I alluded to this briefly. Particularly, we've heard this in the context of colorectal cancer and so forth. Are you actually seeing younger adults being affected by this? Dr. Ari Rosenberg: Yeah, thanks for that. The vast majority of head and neck cancers are head and neck squamous cell carcinomas, as I'm sure many of the listeners recall as well from fellowship or their current training. And as you alluded to, the organ function, long-term and functional quality of life outcomes are quite important, particularly in the context that these develop in high value real estate, parts of our head and neck area that we use for speaking, swallowing, all sorts of other essential functions as well. As you also alluded to, we think of this in two different particular subtypes of head and neck cancer. The historical head and neck cancer from 50, 60 years ago was almost exclusively related to carcinogen exposure, tobacco, alcohol use, and that subtype of carcinogen-induced head and neck cancer has been slowly declining. However, over the last now several decades, we've been seeing an increase in primary oropharyngeal squamous cell carcinoma, mostly tonsil, base of tongue. These are attributable to HPV, human papillomavirus exposure. And that's now the majority of the head and neck cancers that we tend to see in our clinic. As you also alluded to, these have very different prognoses as well. HPV-related head and neck cancer has a much more favorable prognosis where much of the interest has been in can we de-intensify to optimize long-term function? But then the non-HPV-related head and neck cancer, or what we call HPV-negative head and neck cancer, continue to be very, very challenging. We only managed to cure about half of these folks, with many of these patients developing the current disease. These patients, in addition to being difficult to treat, also have major impacts both in terms of the treatments they undergo as well as their disease that can impact their function and quality of life. And you hinted at this a little bit, but we have been seeing an increase in younger patients with HPV-negative head and neck cancer as well, which is quite concerning. Younger patients, oftentimes never smokers, never drinkers, who are developing non-HPV-negative head and neck cancer. And that's been a little bit of a more recent trend that we've been seeing as well. So, definitely a lot of work to be done to optimize and improve outcomes across all of these different head and neck cancer subtypes. Dr. Monty Pal: I mean, I'm just curious, you know, in the context of colorectal cancer, one of the things that we talk about is the potential role of the microbiome driving some of these young-onset cancers with, you know, perhaps there being an impact on, for instance, inflammation and the gut and what have you. Tell me about head and neck cancer. Is this anything known as to why younger patients might be getting diagnosed with non-HPV type cancers? It's odd to me. Dr. Ari Rosenberg: Yeah, it's a great question. A lot of people are working on it. I think we folks have hypotheses, but it hasn't totally panned out exactly what's going on there. It does have a little bit more of a tendency towards women, whereas historically head and neck cancer is much more common in men than it is in women. But lots of people working on that, whether it's related to chronic inflammation, whether it's related to the microbiome. Whether it's related to dental exposure, dental work. So, a lot of folks trying to parse that out because I agree with you, it needs to be identified alongside improving treatment paradigms for these patients, the young ones and the older patients as well. Dr. Monty Pal: Interesting, interesting. You know, one of the phenomena that was sort of coming around when I was in training 25 years ago was this role of sort of induction therapy for head and neck cancers. And of course, it's really come full circle now to include checkpoint inhibitors and so forth. Tell me a little bit about this and how you apply it, maybe in an HPV-mediated context, maybe in a non-HPV context. Dr. Ari Rosenberg: Yeah, absolutely. Induction chemotherapy, as you alluded to, or neoadjuvant chemotherapy, depending on what the locoregional treatment approach is. Similar to other cancer types where systemic control early on has many potential advantages in this setting. Now, in head and neck cancer, even though induction chemotherapy is quite active in head and neck cancer, both HPV-positive and HPV-negative with pretty good response rates. A survival advantage for all comers with local regionally advanced disease remains unproven. There's been two randomized trials, both underpowered, but essentially did not show a survival advantage, showing that induction chemotherapy for all patients with locoregionally advanced and neck cancer can't be justified for a survival advantage. That being said though, there remains a number of potential advantages of giving induction or neoadjuvant chemotherapy, of course, improving systemic control and debulking the disease early on has potential advantages, and predicting the responsiveness to subsequent radiation treatment. We know for some time in head and neck cancer that the percentage of shrinkage or the response to induction chemotherapy actually predicts outcome related to radiation as a dynamic biomarker where response can be used to select patients, for example, for de-escalated radiation has been an area of active investigation, active research. And it also remains a key opportunity to evaluate predictive biomarkers and understanding pre and post treatment to better understand the biology. I'll just add to your question that recently over this past year, we also saw phase 3 data for neoadjuvant immunotherapy for a subset of head and neck cancer that is surgically resectable. And so that's reintroducing the potential benefit in the immunotherapy era of incorporating immunotherapy in the neoadjuvant or the induction setting as part of the evolving treatment paradigm for these diseases. Dr. Monty Pal: That's really interesting. And you kind of alluded to already several topics that I plan to hit on, you know, for instance, the role of immune checkpoint inhibitors, induction, chemotherapy, and so forth. And you started to touch on biomarkers. And of course, I think that's something near and dear to many of us in academic oncology. One thing that we've started talking a lot about in the context of colorectal cancer is circulating tumor DNA. How do you think this might fit in the context of head and neck cancer? Can you give us a flavor for that? Dr. Ari Rosenberg: Yeah, absolutely. In head and neck cancer, the current landscape is most developed for circulating tumor DNA for HPV-related head and neck cancer. The advantage of HPV-related head neck cancer is that you have a distinctive HPV DNA that does tend to spill out into the peripheral blood and can be detected using various different blood-based assays. And because of that advantage as a tissue agnostic approach, it turns out that a number of HPV DNA plasma assays are actually quite sensitive and quite specific. And a number of them have indeed been commercialized. Of course, not only for detecting a baseline, but also grading responsiveness during treatment and probably most importantly in the post-treatment surveillance setting, the detection of HPV DNA in the plasma remains a very important and substantial predictor of developing recurrent disease. There's been a number of trials that have been emerging looking at ctDNA and HPV-related head and neck cancer, using it, for example, as a strategy to deescalate patients. That was something we saw this past ASCO from the Dana-Farber group, and also using it to early det

    21 min
  5. FEB 5

    Can Low-Dose Immunotherapy Expand Global Access to Cancer Care?

    Dr. Monty Pal and Dr. Atul Batra discuss the PLANeT study from India, which evaluated low-dose pembrolizumab in addition to neoadjuvant chemotherapy for triple-negative breast cancer, and its place among a growing body of international research on improving efficacy while reducing costs and toxicity with lower doses of immunotherapy. TRANSCRIPT Dr. Monty Pal: Hello and welcome to the ASCO Daily News Podcast. I'm your host, Dr. Monty Pal. I'm a medical oncologist, professor, and vice chair of academic affairs at the City of Hope Comprehensive Cancer Center, Los Angeles. My guest today, I think, is going to be a really riveting one. It's Dr. Atul Batra, who is an additional professor of medical oncology at the All India Institute of Medical Sciences, or AIIMS, in New Delhi. And he's also the senior author of the PLANeT study. It's a very compelling study that evaluated low-dose pembrolizumab in addition to neoadjuvant chemotherapy for triple-negative breast cancer. And it's really a big part of a growing body of research that's showing balanced efficacy when we use lower doses of immunotherapy instead of standard doses to reduce cost, as well as potentially toxicity. I think this has huge implications for our global audience, and I'm so thrilled to have you on the podcast today, Dr. Atul Batra, welcome. Dr. Atul Batra: Thank you, Dr. Pal. Dr. Monty Pal: And we'll just take it with first names from here since we're both friends. I have to give the audience some context. Atul, I had the great honor of visiting AIIMS New Delhi. For those that don't know, this is really, you know, the Harvard Medical School of India. It's the most competitive institution for medical training. And on the back end of that, there's also incredible resources when it comes to clinical trials and infrastructure. I just wanted to have you give the audience sort of a scope of the types of trials that you've been able to do at AIIMS New Delhi. Dr. Atul Batra: Thank you, Monty. So, I work at the All India Institute of Medical Sciences, and we had the honor and pleasure of having Monty here this month. And people are still in awe of his lectures that he delivered there. Coming back to our institute, so it's kind of a medical college. It's one of the oldest ones, it was built in 1956. We are lucky enough that we get the best of the residents and fellows because they have to go through an exam, a competitive exam, and mostly it's them who come to us and we're able to do some good work out here. Regarding the trials that we have conducted, we do conduct some investigator-initiated studies, and we try to answer the questions where we can help our own patients. Like, for example, this PLANeT study. Every other patient in the clinic was almost not able to afford Keytruda at the full dose, pembrolizumab, and we had a lot of evidence creeping in that a lower dose might be helpful. And that's how we planned this study. Before that, there are certain cancers that are peculiar to India, like gallbladder cancer, head and neck cancers. These are much more common in India as compared to the U.S., and there are some good studies that have been conducted from our own institute by our senior colleagues which have been presented at ASCO and published in the JCO. We also did the capecitabine hand-foot syndrome study that was known as the D-ToRCH study: 1% diclofenac gel that became the standard of care to prevent hand-foot syndrome.  So, that's kind of a brief overview of investigator-initiated studies. India is slowly and steadily becoming a partner of the global registration trials. And it's more recently, the last five years or so, we have seen that the number of phase 2 and phase 3 trials are increasing and we are able to offer now these trials as well to our patients. Dr. Monty Pal: That was a terrific overview. I just want to highlight for the audience, as we go through some of your discussions today around specific trials, the speed at which this can be done. Just for context, for me to accrue a clinical trial of 30 patients – I think many people have probably come across some of the work that I've done in the microbiome space – at a single institution, 30 patients, right, takes me about a year and a half, two years. We're going to go through some trials today where Dr. Batra and his team have actually, in fact, accrued close to 200 patients over a span of just a year, which is just remarkable by, I would say, any American standard. So, I see a real need for partnership and Atul, I'll kind of get back to that at the end. But without further ado, the focus of this podcast today, I think, is really this terrific presentation you gave in an oral session at ESMO and subsequently published in Annals of Oncology related to the PLANeT study. Would you give the listeners some context around what the study entailed and population and so forth? Dr. Atul Batra: So, we know the KEYNOTE-522 became the standard of care for triple-negative breast cancer, where Keytruda, when added at 200 mg, the standard dose every three weeks with neoadjuvant, increases the pCR from around 51% to 64% by a magnitude of around 13%. However, in India and other low-middle income countries, less than 5% of the patients actually have access to this dose of pembrolizumab. So, our standard of care was actually just chemotherapy till now. And this kind of led us to design this trial. There are data that come from previous trials conducted in India, from the Tata Memorial, done in head and neck space, some other studies done in Hodgkin's lymphoma, that a much lower dose, probably around one-tenth of the dose, works well in these cancers. So, that's where we designed the PLANeT study, where we gave the standard neoadjuvant chemotherapy in the control arm, and in the experimental arm we added 50 mg of pembrolizumab. This was given every six weeks for three doses. So, that's a total of 150 mg over the neoadjuvant period as compared to 1,600 mg that was given in the KEYNOTE-522 study. So, this was almost one-tenth of the study. Dr. Monty Pal: So, a tenth of the dose, which is just remarkable. I mean, that's just such an interesting concept. Dr. Atul Batra: And the results, when we – the primary outcome, this was a phase 2 study. We just wanted to see, is there a signal of activity? And to even our surprise, when we looked at the pathological complete response rates, in the control arm this was 40.5%, and in the experimental arm this was 53.8%. So, a difference came to around 13.3%; it was numerically, I mean, so much similar to what KEYNOTE-522 had with just these many doses. So, this was around 160 patients randomized over one year. We could randomize them in one year because of the load that we see. And the primary endpoint was met, and we could see that the path complete response did show a remarkable increase. We are still following these patients to see whether there is a difference in event-free survival at a longer follow-up. Until now, it's a small follow-up, so the number of events absolute, are different: four events in the experimental arm and 11 events in the control arm. So, we are seeing some signal even in this much short follow-up period as well. But we need to see more of what happens in the longer term. Dr. Monty Pal: That's so impressive. I wonder, with this lower dose, do you attenuate toxicity at all as far as you can gather? Dr. Atul Batra: So, although we shouldn't be doing kind of cross-trial comparisons, but if you look at thyroid dysfunction, we saw that around 10% of our patients had this thyroid dysfunction. This was compared to 15% in the KEYNOTE-522, that was a larger sample size though. But we're seeing that all the toxicities are somewhat less as compared to those in the standard dose. So, the exposure is less, but I mean, I can't really commit definitely on this. For this we would need much more data to say this with more confidence. Dr. Monty Pal: Yeah. I'm going to ask you a really tough question to follow up, and this is probably something that's on everyone's mind after reading a study like this. Is this something that is disease-specific that needs to be replicated across other histologies? The reason I ask this is, you know, you think about paradigms like, for instance, in the States we're toying between intravenous versus subcutaneous delivery of checkpoint inhibitors, and we have studies focused in specific histologies that might justify use across all histologies. With this particular phenomenon, do you think we need to do dedicated studies in renal cell or in colon cancer and other places where, you know, in selected settings we might use checkpoint inhibitors and then decide whether or not there's this dose equivalence, if you will? Dr. Atul Batra: That's a real tough one, though. But I'm happy to share that there are several ongoing studies within India currently. At our institute, my colleagues are leading studies in lung cancer space, cervical cancer. There was already a publication from Tata Memorial Hospital in head and neck cancers and we see that the signal has been consistent throughout. Regarding renal cancer, there was one study that was presented for sure at ASCO from CMC Vellore, that's again a center in South India. That was in RCC at a much lower dose. And for patients who cannot take the full dose, we actually are offering lower dose nivolumab in such patients and we are seeing responses. I mean, we haven't done those randomized trials again because the numbers are much lower in kidney cancers, we know. We could do this trial in triple-negative ones because we had support and we had numbers to conduct this trial. But I'm sure this should be a class effect. I mean, when we can get tumor-agnostic approvals, then some real-world data has come up in almost all tumors, we have seen that consistent effect across tumors. And as we speak of today, I'm also delighted to share that in India, yesterday, we had the

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The ASCO Daily News Podcast features oncologists discussing the latest research and therapies in their areas of expertise.

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