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ASCO Daily News

Podcast ASCO Daily News
American Society of Clinical Oncology (ASCO)
The ASCO Daily News Podcast features oncologists discussing the latest research and therapies in their areas of expertise.

Episódios Disponíveis

5 de 100
  • The Evolving Role of Precision Surgery in Gynecologic Cancers
    Dr. Ebony Hoskins and Dr. Andreas Obermair discuss the surgical management of gynecologic cancers, including the role of minimally invasive surgery, approaches in fertility preservation, and the nuances of surgical debulking. TRANSCRIPT Dr. Ebony Hoskins: Hello and welcome to the ASCO Daily News Podcast, I'm Dr. Ebony Hoskins. I'm a gynecologic oncologist at MedStar Washington Hospital Center in Washington, DC, and your guest host of the ASCO Daily News Podcast. Today we'll be discussing the surgical management of gynecologic cancer, including the role of minimally invasive surgery (MIS), approaches in fertility preservation, and the nuances of surgical debulking, timing, and its impact on outcomes. I am delighted to welcome Dr. Andreas Obermair for today's discussion. Dr. Obermair is an internationally renowned gynecologic oncologist, a professor of gynecologic oncology at the University of Queensland, and the head of the Queensland Center for Gynecologic Cancer Research. Our full disclosures are available in the transcript of this episode. Dr. Obermair, it's great speaking with you today. Dr. Andreas Obermair: Thank you so much for inviting me to this podcast. Dr. Ebony Hoskins: I am very excited.  I looked at your paper and I thought, gosh, is everything surgical? This is everything that I deal with daily in terms of cancer in counseling patients. What prompted this review regarding GYN cancer management? Dr. Andreas Obermair: Yes, our article was published in the ASCO Educational Book; it is volume 44 in 2024. And this article covers some key aspects of targeted precision surgical management principles in endometrial cancer, cervical cancer, and ovarian cancer. While surgery is considered the cornerstone of gynecologic cancer treatment, sometimes research doesn't necessarily reflect that. And so I think ASCO asked us to; so it was not just me, there was a team of colleagues from different parts of the United States and Australia to reflect on surgical aspects of gynecologic cancer care and I feel super passionate about that because I do believe that surgery has a lot to offer. Surgical interventions need to be defined and overall, I see the research that I'm doing as part of my daily job to go towards precision surgery. And I think that is, well, that is something that I'm increasingly passionate for. Dr. Ebony Hoskins: Well, I think we should get into it. One thing that comes to mind is the innovation of minimally invasive surgery in endometrial cancer. I always reflect on when I started my fellowship, I guess it's been about 15 years ago, all of our endometrial cancer patients had a midline vertical incision, increased risk of abscess, infections and a long hospital stay. Do you mind commenting on how you see management of endometrial cancer today? Dr. Andreas Obermair: Thank you very much for giving the historical perspective because the generation of gynecologic oncologists today, they may not even know what we dealt with, what problems we had to solve. So like you, when I was a fellow in gynecologic oncology, we did midline or lower crosswise incisions, the length of stay was, five days, seven days, but we had patients in hospital because of complications for 28 days. We took them back to the operating theaters because those are patients with a BMI of 40 plus, 45, 50 and so forth. So we really needed to solve problems. And then I was exposed to a mentor who taught minimal invasive surgery. And in Australia he was one of the first ones who embarked on that. And I can remember, I was mesmerized by this operation, like not only how logical this procedure was, but also we did rounds afterwards. And I saw these women after surgery and I saw them sitting upright, lipstick on, having had a full meal at the end of the day. And I thought, wow, this is the most rewarding experience that I have to round these patients after surgery. And so I was thinking, how could I help to establish this operation as standard? Like a standard that other people would accept this is better. And so I thought we needed to do a trial on this. And then it took a long time. It took a long time to get the support for the [LACE - Laparoscopic Approach to Cancer of the Endometrium] trial. And in this context, I just also wanted to remind us all that there were concerns about minimal invasive surgery in endometrial cancer at the time. So for example, one of the concerns was when I submitted my grant funding applications, people said, “Well, even if we fund you, wouldn't be able to do this trial because there are actually no surgeons who actually do minimally invasive surgery.” And at the time, for example, in Australia, there were maybe five people, a handful of people who were able to do this operation, right? This was about 20 years ago. The other concern people had was they were saying, could minimally invasive surgery for endometrial cancer, could that cause port side metastasis because there were case reports. So there were a lot of things that we didn't know anyway. We did this trial and I'm super happy we did this trial. We started in 2005, and it took five years to enroll. At the same time, GOG LAP2 was ramping up and the LACE trial and GOG LAP2 then got published and provided the foundations for minimally invasive surgery in endometrial cancer. I'm super happy that we have randomized data about that because now when we go back and now when people have concerns about this, should we do minimally invasive surgery in P53 mutant tumors, I'm saying, well, we actually have data on that. We could go back, we could actually do more research on that if we wanted to, but our treatment recommendations are standing on solid feet. Dr. Ebony Hoskins: Well, my patients are thankful. I see patients all the time and they have high risk and morbidly obese, lots of medical issues and actually I send them home most the same day. And I think, you know, I’m very appreciative of that research, because we obviously practice evidence-based and it’s certainly a game changer. Let’s go along the lines of MIS and cervical cancer. And this is going back to the LACC [Laparoscopic Approach to Cervical Cancer] trial.  I remember, again, one of these early adopters of use of robotic surgery and laparoscopic surgery for radical hysterectomy and thought it was so cool. You know, we can see all the anatomy well and then have the data to show that we actually had a decreased survival. And I even see that most recent updated data just showing it still continued. Can you talk a little bit about why you think there is a difference? I know there's ongoing trials, but still interested in kind of why do you think there's a survival difference? Dr. Andreas Obermair:  So Ebony, I hope you don't mind me going back a step. So the LACC study was developed from the LACE trial. So we thought we wanted to reproduce the LACE data/LAP2 data. We wanted to reproduce that in cervix cancer. And people were saying, why do you do that? Like, why would that be different in any way? We recognize that minimally invasive radical hysterectomy is not a standard. We're not going to enroll patients in a randomized trial where we open and do a laparotomy on half the patients. So I think the lesson that really needs to be learned here is that any surgical intervention that we do, we should put on good evidence footing because otherwise we're really running the risk of jeopardizing patients' outcomes. So, that was number one and LACC started two years after LACE started. So LACC started in 2007, and I just wanted to acknowledge the LACC principal investigator, Dr. Pedro Ramirez, who at the time worked at MD Anderson. And we incidentally realized that we had a common interest. The findings came totally unexpected and came as an utter shock to both of us. We did not expect this. We expected to see very similar disease-free and overall survival data as we saw in the endometrial cancer cohort. Now LACC was not designed to check why there was a difference in disease-free survival. So this is very important to understand. We did not expect it. Like, so there was no point checking why that is the case. My personal idea, and I think it is fair enough if we share personal ideas, and this is not even a hypothesis I want to say, this is just a personal idea is that in endometrial cancer, we're dealing with a tumor where most of the time the cancer is surrounded by a myometrial shell. And most of the time the cancer would not get into outside contact with the peritoneal cavity. Whereas in cervix cancer, this is very different because in cervix cancer, we need to manipulate the cervix and the tumor is right at the outside there. So I personally don't use a uterine manipulator. I believe in the United States, uterine manipulators are used all the time. My experience is not in this area, so I can't comment on that. But I would think that the manipulation of the cervix and the contact of the cervix to the free peritoneal cavity could be one of the reasons. But again, this is simply a personal opinion. Dr. Ebony Hoskins: Well, I appreciate it. Dr. Andreas Obermair: Ebony at the end of the day, right, medicine is empirical science, and empirical science means that we just make observations, we make observations, we measure them, and we pass them on. And we made an observation. And, and while we're saying that, and yes, you're absolutely right, the final [LACC] reports were published in JCO recently. And I'm very grateful to the JCO editorial team that they accepted the paper, and they communicated the results because this is obviously very important. At the same time, I would like to say that there are now three or four RCTs that challenge the LACC data. These RCTs are ongoing, and a lot of people will be looking forward to having these results available. Dr. Ebony Hoskins: Very good. In early-stage cervical cancer, the SHAPE trial looked at simple versus radical hysterectomy in low-risk cervical cancer patients. And as well all know, simple hysterectomy was not inferior to radical hysterectomy with respect to the pelvic recurrence rate and any complications related to surgery such as urinary incontinence and retention. My question for you is have you changed your practice in early-stage cervical cancer, say a patient with stage 1B1 adenocarcinoma with a positive margin on conization, would you still offer this patient a radical hysterectomy or would you consider a simple hysterectomy? Dr. Andreas Obermair:  I think this is a very important topic, right? Because I think the challenge of SHAPE is to understand the inclusion criteria. That's the main challenge. And most people simplify it to 2 cm, which is one of the inclusion criteria but there are two others and that includes the depth of invasion. Dr. Marie Plante has been very clear. Marie Plante is the first author of the SHAPE trial that's been published in the New England Journal of Medicine only recently and Marie has been very clear upfront that we need to consider all three inclusion criteria and only then the inclusion criteria of SHAPE apply. So at the end of the day, I think what the SHAPE trial is telling us that small tumors that would strictly fulfill the criteria of a 1B or 1B1 cancer of the cervix can be considered for a standard type 1 or PIVA type 1 or whatever classification we're trying to use will be eligible. And that makes a lot of sense. I personally not only look at the size, I also look at the location of the tumor. I would be very keen that I avoid going through tumor tissue because for example, if you have a tumor that is, you know, located very much in one corner of the cervix and then you do a standard hysterectomy and then you have a positive tumor margin that would be obviously, most people would agree it would be an unwanted outcome. So I'd be very keen checking the location, the size of the tumor, the depths of invasion and maybe then if the tumor for example is on one side of the cervix you can do a standard approach on the contralateral side but maybe do a little bit more of a margin, a parametrial margin on the other side. Or if a tumor is maybe on the posterior cervical lip, then you don't need to worry so much about the anterior cervical margin, maybe take the rectum down and maybe try to get a little bit of a vaginal margin and the margin on the uterus saccals. Just really to make sure that you do have margins because typically if we get it right, survival outcomes of clinical stage 1 early cervix cancer 1B1 1B 2 are actually really good. It is a very important thing that we get the treatment right. In my practice, I use a software to record my treatment outcomes and my margins. And I would encourage all colleagues to be cognizant and to be responsible and accountable to introduce accountable clinical practice, to check on the margins and check on the number on the percentage of patients who require postoperative radiation treatment or chemo radiation. Dr. Ebony Hoskins: Very good. I have so many questions for you. I don't know the statistics in Australia, but here, there's increased rising of endometrial cancer and certainly we're seeing it in younger women. And fertility always comes up in terms of kind of what to do. And I look at the guidelines and, see if I can help some of the women if they have early-stage endometrial cancer. Your thoughts on what your practice is on use of someone who may meet criteria, if you will. The criteria I use is grade 1 endometrioid adenocarcinoma. No myometria invasion. I try to get MRI'd and make sure that there's no disease outside the endometrium. And then if they make criteria, I typically would do an IUD. Can you tell me what your practice is and where you've had success? Dr. Andreas Obermair: So, we initiated the feMMe clinical trial that was published in 2021 and it was presented in a Plenary at one of the SGO meetings. I think it was in 2021, and we've shown complete pathological response rates after levonorgestrel intrauterine device treatment. And so in brief, we enrolled patients with endometrial hyperplasia with atypia, but also patients with grade 1 endometrial adenocarcinoma. Patients with endometrial hyperplasia with atypia had, in our series, had an 85 % chance of developing a complete pathological response. And that was defined as the complete absence of any atypia or cancer. So endometrial hyperplasia with atypia responded in about 85%. In endometrial cancer, it was about half, it was about 45, 50%. In my clinical practice, like as you, I see patients, you know, five days a week. So I'm looking after many patients who are now five years down from conservative treatment of endometrial cancer. There are a lot of young women who want to get pregnant, and we had babies, and we celebrate the babies obviously because as gynecologist obstetricians it couldn't get better than that, right, if our cancer patients have babies afterwards. But we're also treating women who are really unfit for surgery and who are frail and where a laparoscopic hysterectomy would be unsafe. So this phase is concluded, and I think that was very successful. At least we're looking to validate our data. So we're having collaborations, we're having collaborations in the United States and outside the United States to validate these data. And the next phase is obviously to identify predictive factors, to identify predictors of response. Because as you can imagine, there is no point treating patients with a levonorgestrel intrauterine joint device where we know in advance that she's not going to respond. So this is a very, very fascinating story and we got our first set of data already, but now we just really need to validate this data. And then once the validation is done, my unit is keen to do a prospective validation trial. And that also needs to involve international collaborators. Dr. Ebony Hoskins: Very good. Moving on to ovarian cancer, we see patients with ovarian cancer with, say, at least stage 3C or higher who started neoadjuvant chemotherapy. Now, some of these patients are hearing different things from their medical oncologist versus their gynecologic oncologist regarding the number of cycles of neoadjuvant chemotherapy after getting diagnosed with ovarian cancer. I know that this can be confusing for our patients coming from a medical oncologist versus a gynecologic oncologist. What do you say to a patient who is asking about the ideal number of chemotherapy cycles prior to surgery? Dr. Andreas Obermair: So this is obviously a very, very important topic to talk about. We won't be able to provide a simple off the shelf answer for that, but I think data are emerging.  The ASCO guidelines should also be worthwhile considering because there are actually new ASCO Guidelines [on neoadjuvant chemotherapy for newly diagnosed, advanced ovarian cancer] that just came out a few weeks ago and they would suggest that we should be aiming for R0 in surgery. If we can maybe take that as the pivot point and then go back and say, okay, so what do need to do to get the patient to zero?  I'm not an ovarian cancer researcher; I'm obviously a practicing gynecologic oncologist. I think about things a lot and things like that. In my practice, I would want a patient to develop a response after neoadjuvant chemotherapy. So, if a patient doesn't have a response after two or three cycles, then I don't see the point for me to offer her an operation. In my circle with the medical oncologists that I work with, I have a very, very good understanding. So, they send the patient to me, I take them to the theater. I take a good chunk of tissue from the peritoneum. We have a histopathologic diagnosis, we have a genomic diagnosis, they go home the same day. So obviously there is no hospital stay involved with that. They can start the chemotherapy after a few days. There is no hold up because the chances of surgical complication in a setting like this is very, very low. So I use laparoscopy to determine whether the patient responds or not. And for many of my patients, it seems to work. It's obviously a bit of an effort and it takes operating time. But I think I'm increasing my chances to make the right decision. So, coming back to your question about whether we should give three or six cycles, I think the current recommendations are three cycles pending the patient’s response to neoadjuvant chemotherapy because my aim is to get a patient to R0 or at least minimal residual disease. Surgery is really, in this case, I think surgery is the adjunct to systemic treatment. Dr. Ebony Hoskins: Definitely. I think you make a great point, and I think the guideline just came out, like you mentioned, regarding neoadjuvant. And I think the biggest thing that we need to come across is the involvement of a gynecologic oncologist in patients with ovarian cancer. And we know that that survival increases with that involvement. And I think the involvement is the surgery, right? So, maybe we've gotten away from the primary tumor debulking and now using more neoadjuvant, but surgery is still needed. And so, I definitely want to have a take home that GYN oncology is involved in the care of these patients upfront. Dr. Andreas Obermair: I totally support that. This is a very important statement. So when I'm saying surgery is the adjunct to medical treatment, I don't mean that surgery is not important. Surgery is very important. And the timing is important. And that means that the surgeons and the med oncs need to be pulling on the same string. The med oncs just want to get the cytotoxic into the patients, but that's not the point, right? We want to get the cytotoxic into the patients at the right time because if we are working under this precision surgery, precision treatment mantra, it's not only important what we do, but also doing it at the right time. And ideally, I I would like to give surgery after three cycles of neoadjuvant chemotherapy, if that makes sense. But sometimes for me as a surgeon, I talk to my med onc colleagues and I say, “Look, she doesn't have a good enough response to her treatment and I want her to receive six cycles and then we re-evaluate or change medical treatment,” because that's an alternative that we can swap out drugs and treat upfront with a different drug and then sometimes they do respond. Dr. Ebony Hoskins:  I have maybe one more topic. In the area I'm in, in the Washington D.C. area, we see lots of endometrial cancer and they're not grade 1, right? They're high-risk endometrial cancer and advanced. So a number of patients with stage 3 disease, some just kind of based off staging and then some who come in with disease based off of the CT scan, sometimes omental caking, ascites. And the real question is we have extrapolated the use of neoadjuvant chemotherapy to endometrial cancer. It's similar, but not the same. So my question is in an advanced endometrial cancer, do you think there's still a role, when I say advanced, I mean, maybe stage 4, a role for surgery? Dr. Andreas Obermair: Most definitely. But the question is when do you want to give this surgery? Similar to ovarian cancer, in my experience, I want to get to R0. What am I trying to achieve here? So, I reckon we should do a trial on this. And I reckon we have, as you say, the number of patients in this setting is increasing, we could do a trial. I think if we collaborate, we would have enough patients to do a proper trial. Obviously, we would start maybe with a feasibility trial and things like that. But I reckon a trial would be needed in this setting because I find that the incidence that you described, that other people would come across, they’re becoming more and more common. I totally agree with you, and we have very little data on that. Dr. Ebony Hoskins: Very little and we're doing what we can. Dr. Obermair, thank you for sharing your fantastic insights with us today on the ASCO Daily News Podcast and for all the work you do to advance care for patients with gynecologic cancer. Dr. Andreas Obermair: Thank you, Dr. Hoskins, for hosting this and it's been an absolute pleasure speaking with you today. Dr. Ebony Hoskins: Definitely a pleasure and thank you to our listeners for your time today. Again, Dr. Obermair's article is titled, “Controversies in the Surgical Management of Gynecologic Cancer: Balancing the Decision to Operate or Hesitate,” and was published in the 2024 ASCO Educational Book. And you'll find a link to the article in the transcript of this episode. Finally, if you value the insights that you hear on the ASCO Daily News Podcast, please take a moment to rate, review and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement. Find out more about today’s speakers: Dr. Ebony Hoskins @drebonyhoskins Dr. Andreas Obermair @andreasobermair Follow ASCO on social media:       @ASCO on Twitter       ASCO on Bluesky   ASCO on Facebook       ASCO on LinkedIn       Disclosures:   Dr. Ebony Hoskins: No relationships to disclose. Dr. Andreas Obermair: Leadership: SurgicalPerformance Pty Ltd. Stock and Ownership Interests: SurgicalPerformance Pty Ltd. Honoraria: Baxter Healthcare Consulting or Advisory Role: Stryker/Novadaq Patents, Royalties, and Other Intellectual Property: Shares in SurgicalPerformance Pty Ltd. Travel, Accommodation, Expenses: Stryker    
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  • Emerging Therapies in Acute Myeloid Leukemia
    Dr. John Sweetenham and Dr. James Foran discuss the evolving treatment landscape in acute myeloid leukemia, including new targeted therapies, advances in immunotherapy, and the current role for allogeneic transplantation. TRANSCRIPT Dr. John Sweetenham: Hello, I'm Dr. John Sweetenham, the host of the ASCO Daily News Podcast. There has been steady progress in the therapies for acute myeloid leukemia (AML) in recent years, largely based on an increasing understanding of the molecular mechanisms which underlie the disease. On today's episode, we'll be discussing the evolving treatment landscape in AML. We'll explore risk group stratification, new targeted therapies, advances in immunotherapy for AML, and also a little about the current role for allogenic transplantation in this disease.  I'm delighted to welcome Dr. James Foran to this discussion. Dr. Foran is a professor of medicine and chair of the Myeloid Malignancies and Blood and Marrow Transplant Disease Group at the Mayo Clinic Comprehensive Cancer Center. He's based in Jacksonville, Florida.  Our full disclosures are available in the transcript of this episode.  James, it's great to have you join us on the podcast today, and thanks so much for being here. Dr. James Foran: I'm delighted and thank you for the invitation. Thank you very much. Dr. John Sweetenham: Sure, James, let's get right into it. So, our understanding of the molecular mechanisms underlying AML has resulted not only in new methods for risk stratification in this disease, which have added refinement to cytogenetics, but also has resulted in the development of many new targeted agents. Understanding that this is a complex area of investigation, and our time is somewhat limited, can you give us a high-level update on the current state of the art in terms of how risk factors are being used for treatment selection now? Dr. James Foran: Absolutely. I think in the past, you know, we had things broken down pretty simply into make a diagnosis based on morphology, do cytogenetics, break patients into the groups of those who were more likely to benefit from therapy – so-called favorable risk – those where the intensive therapies were less likely to work – so-called poor adverse risk, and then this large intermediate group that really had variable outcomes, some better, some worse. And for a long time, the progress was in just identifying new subtle cytogenetic risk groups. And then, late 1990s, we began to understand that FLT3 mutations or NRAS mutations may be more adverse than others that came along. In the first part of this millennium, in the, you know, 2000-2010 range, a lot of work was being done to understand better or worse risk factors with single genes. The ability to do multiplex PCR, and then more recently NGS platforms, have allowed us to really look at many genes and identify many mutations in patients. At the beginning that was used just to sort of refine – who did a little better, who did a little worse with intensive therapy – helped us decide who may benefit more from an allogeneic transplanter for whom that would not be necessary.  But the good news is that really, we're now starting to target those mutations. One of the first molecularly targeted treatments in leukemia was FLT3 mutations, where we knew they were adverse. Then along came targeted treatments. I was involved in some of those early studies looking at sunitinib, sorafenib, more recently midostaurin, now quizartinib, FDA approved, and gilteritinib in the relapse refractory setting.  So we're moving into a state where we're not just refining prognosis, we're identifying targets. You know, it's been slow progress, but definite incremental progress in terms of outcomes by looking for FLT3 mutations, then looking for IDH mutations, and more recently, mutations involving NPM1 or rearrangement of what we used to call the MLL gene, now the lysine methyltransferase 2A or KMT2A rearrangement, where we now have targets. And it's not just for refinement of prognosis, but now we're identifying therapeutic targets for patients and ways to even look for measurable residual disease which is impacting our care. Dr. John Sweetenham: That's great, James. And I'm going to expand on that theme just a little bit and perhaps ask you to elaborate a little bit more on how the introduction of these new therapies have specifically impacted frontline therapy. And a couple of ancillary questions maybe to go along with that: First of all, is ‘7+3’ a standard therapy for anybody in 2025? And maybe secondly, you know, could you comment also maybe briefly on older patients with AML and how you think maybe the treatment landscape is changing for them compared with, say, 5 or 10 years ago? Dr. James Foran: I'll start with the therapy and then work my way back. So we've had ‘7+3’ cytarabine daunorubicin or cytarabine anthracycline since 1976, and we're still using it as the backbone of our intensive therapy. There is still an important role for it, particularly in younger or fitter patients, and particularly for those with intermediate or favorable risk genetic groups or cytogenetic risk groups just because we achieve high rates of remission. Our 30-day induction mortality rates are lower now than they were 10 and 20 years ago. Our supportive care is better. And we still have a busy inpatient hospital service here at Mayo Florida and my colleagues in Rochester and Arizona as well giving intensive therapy. So that remains the backbone of curative therapy for younger adults. We are trying to be a little more discriminating about who we administer that to. We are trying to add targeted agents. We know from, now, two different randomized trials that the addition of a FLT3 inhibitor, either midostaurin or more recently quizartinib, has a survival advantage in patients with a FLT3 mutation, or for quizartinib, a FLT3/ITD mutation. And so yes, ‘7+3’ remains important.  Off protocol for somebody who just comes in with acute leukemia in a 40-year-old or 30-year-old or even early 60s and fit, we would still be considering ‘7+3’ therapy and then waiting for an expedited gene mutation panel and an expedited cytogenetics panel to come back to help us discriminate is that a patient for whom we should be giving a FLT3 inhibitor? I think there's a little more nuance about when we do a day 14 bone marrow, do they really matter as much anymore? I still do them. Some of my colleagues find them less important. But we're still giving intensive therapy. We're still giving high-dose ARA-C consolidation for younger patients who achieve complete remission.  In older adults, it's a different story. You know, it was only in the early part of the 2000s – 2004, 2007 range – where we really got buy-in from randomized studies that low-dose therapy was better than no therapy. There was a lot of nihilism before then about therapy for older adults, especially over age 75. We know that low-dose ARA-C is better than nothing. It looked like azacitidine was better than ARA-C or at least equivalent or slightly better. But with the advent of venetoclax it was a game changer. I ran a national randomized study of intensive therapy in AML. It was the last national randomized study of intensive therapy in older patients right before venetoclax got approved. And we were very excited about our results, and we thought we had some really interesting clinical results. And suddenly that's a little bit obsolete in patients over 70 and particularly over age 75 because of the high remission rates with azacytidine venetoclax or hypomethylating agents, so-called HMAs and venetoclax and the survival advantage. Now, it's not a home run for everybody. We quote 60% to 70% remission rates, but it's a little different based on your cytogenetics and your mutation profile. You have to continue on therapy so it's continuous treatment. It's not with curative intent, although there are some people with long-term remission in it. And the median survival went from 10 months to 15 months. So home run? No, but definitely improved remissions, meaningful for patients off transfusions and better survival. So right now it's hard to find an older adult who you wouldn't give azacitidine and venetoclax or something similar, decitabine, for instance, and venetoclax, unless somebody really was moribund or had very poor performance status or some reason not to. And so ‘7+3’ is still relevant in younger adults. We're trying to get better results with ‘7+3’ by adding targeted agents and azacitine and venetoclax in older adults.  I think the area of controversy, I guess there are two of them, is what to do in that overlap age between 60 and 75. Should people in that age still get intensive therapy, which we've used for years – the VIALE-A trial of aza-venetoclax was age 75 plus – or with cardiac comorbidities? And I think if you're 68 or 72, many of us are starting to bias towards aza-venetoclax as generally being better tolerated, generally being more outpatient, generally being slow and steady way to get a remission. And it doesn't stop you from going to transplant for somebody who might still be a candidate.  The other area of controversy is somebody under 60 who has adverse cytogenetics where we don't do very well with ‘7+3,’ we still give it and we might do just as well with decitabine venetoclax. A lot of us feel that there's equipoise in the 60 to 75 group where we really can ask a question of a randomized study. Retrospective studies might suggest that intensive therapy is a little better, but there are now a couple of randomized studies happening saying, “Can we replace ‘7+3’ in that intermediate age with aza-venetoclax?” And for younger adults similarly, we're looking to see how we apply that technology. Those are the areas where we're really trying to investigate what's optimal for patients and that's going to require randomized trials. Dr. John Sweetenham: Oh, that's great, thank you. And I'll just extend that question a little bit more, particularly with respect to the new targeted therapies. How much are they impacting the treatment of these patients in the relapse and refractory setting now? Dr. James Foran: Oh, they're definitely impacting it. When I trained and probably when you trained, AML was still a medical emergency. But that was the thing that you admitted to the hospital immediately, you started therapy immediately. The rule was always that's the one thing that brings the fellow and the consultant in at night to see that new patient on a Friday or Saturday. Now, we'll still admit a patient for monitoring, but we try not to start therapy for the first three or five or seven days if they're stable, until we get those genetics and those genomics back, because it helps us discriminate what therapy to pursue. And certainly, with FLT3 mutations, especially FLT3/ITD mutations, we're adding FLT3 inhibitors and we're seeing a survival advantage. Now, on the surface, that survival advantage is in the range of 7% or 10%. But if you then pursue an allogeneic transplant in first remission, you're taking disease where we used to see 30%, 40% long-term survival, maybe less, and you're pushing that to 60%, 70% in some studies. And so we're now taking a disease that– I don't want to get off topic and talk about Ph+ ALL. But that's a disease where we're actually a little excited. We have a target now, and it used to be something really adverse and now we can do a lot for it and a lot about it.  The other mutations, it's a little more subtle. Now, who knew until 2010 that a mutation in a sugar metabolism gene, in isocitrate dehydrogenase, or IDH was going to be so important, or even that it existed. We know that IDH1 and IDH2 mutations are still a minority of AML, certainly less than 10% to 15%, maybe overall. But we're able to target those with specific IDH1 and IDH2 inhibitors. We get single-agent responses. There are now two approved IDH1 inhibitors on the market. We don't yet have the randomized data that adding those to intensive therapy is better, but we're getting a very strong hint that it might be better in older adults who have an IDH mutation, maybe adding those is helpful and maybe adding those to low-intensity therapy is helpful. Those studies are ongoing, and we're also trying with low-intensity treatments to add these agents and get higher remission rates, deeper remissions, longer remissions. I think a lot of work has to be done to delineate the safety of that and the long-term efficacy. But we're getting hints it's better, so I think it is impacting.  The other area it's impacting is when you pick up adverse mutations and those have crept into our classification systems like an ASXL1 mutation or RUNX1 mutation for instance, or some of the secondary AML mutations like BCOR and others, where that's helping us discriminate intermediate-risk patients who we think aren't going to do as well and really helping us select a group who's more likely to get benefit from allogeneic transplant or for whom at least our cure rates without allo transplant are low. And so I think it's impacting a lot. Dr. John Sweetenham: Great. And I'm going to pick up now, if I may, on a couple of things that you've just mentioned and continue the theme of the relapsed and refractory setting. We've started to see some reports which have looked at the role of immune strategies for patients with AML, in particular CAR T or NK cells. Can you comment a little on this and let us know whether you think either these two strategies or other immune strategies are likely to have a significant role in AML in the future? Dr. James Foran: They are, but I think we're still a step behind finding the right target or the right way to do it. If you think of allogeneic transplantation as the definitive immune therapy, and we know for adverse AML we can improve survival rates and cure rates with an allotransplant, then we know inherently that immune therapy matters. And so how do we do what they've done in large cell lymphoma or in CD19 targeting for B cell malignancies? How do we bring that to acute myeloid leukemia? There have been a number of efforts. There have been at least 50 trials looking at different targets. CD33, CD123, CD7, others, CLL-1. So, there have been a number of different trials looking at how to bind a CAR T or a CAR T construct that can be active. And we have hints of efficacy. There was kind of a provocative paper in the New England Journal of Medicine a year ago in April of last year from a Chinese group that looked at a CD7-based CAR T and it was 10 patients, but they used CD7 positive acute leukemia, AML or ALL and had a CD7-targeted CAR T and they actually incorporated that with a haploidentical transplant and they had really high remission rates. People tolerated it quite well. It was provocative. It hasn't yet been reproduced on a larger scale, but the strong hints that the strategy is going to work.  Now, CD33 is a little tricky to have a CAR T when CD33 is expressed on normal hematopoietic cells. CD123 likewise. That's been something where there's, I think, still promise, but we've struggled to find the trials that make that work. Right now, there's a lot of interest in leveraging NK cells and looking, for a couple of reasons, but NK cells are attractive and NK cell markers might be attractive targets. NK cells might have similar degrees of immune efficacy. It's speculative, but they are likely to have less cytokine release syndrome and less neurotoxicity than you see with CAR T. And so it's kind of attractive to leverage that. We have had some ongoing trials looking at it with bispecifics and there certainly are trials looking at it with CAR NK-based strategies. One of the antigens that people looked at is the NK group 2D. NK group 2D or NKG2D is overexpressed in AML and its ligands overexpressed. And so that's a particular potential target. So, John, it's happening and we're looking for the hints of efficacy that could then drive a pivotal trial to get something approved.  One of the other areas is not restricting yourself just to a single antigen. For instance, there is a compound that's looking at a multi-tumor-associated antigen-specific T-cell therapy, looking at multiple antigens in AML that could be overexpressed. And there were some hints of activity and efficacy and actually a new trial looking at a so-called multi-tumor associated antigen-specific T cell therapy. So without getting into specific conflicts of interest or trials, I do think that's an exciting area and an evolving area, but still an investigational area. I'll stop there and say that we're excited about it. A lot of work's going there, but I'm not quite sure which direction the field's going to pivot to there. I think that's going to take us some time to sort out. Dr. John Sweetenham: Yeah, absolutely. But as you say, exciting area and I guess continue to watch this space for now.  So you've mentioned allogeneic stem cell transplants two or three times during this discussion. Recognizing that we don't have an imatinib for AML, which has kind of pushed transplant a long way further back in the treatment algorithm, can you comment a little on, you know, whether you think the role of stem cell transplantation is changing in AML or whether it remains pretty much as it was maybe 10 years ago? Dr. James Foran: By the way, I love that you use imatinib as an introduction because that was 6 TKIs ago, and it tells you the evolution in CML and you know, now we're looking at myristoyl pocket as a target, and so on. That's a great way to sort of show you the evolution of the field.  Allogeneic transplant, it remains a core treatment for AML, and I think we're getting much smarter and much better about learning how to use it. And I'm just going to introduce the topic of measurable residual disease to tell you about that. So I am a little bit of a believer. Part of my job is I support our allogeneic transplant program, although my focus is acute myeloid leukemia, and I've trained in transplant and done it for years and did a transplant fellowship and all that. I'm much more interested in finding people who don't need a transplant than people who do. So I'm sort of looking for where can we move away from it. But it still has a core role. I'll sidestep and tell you there was an MDS trial that looked at intermediate or high-risk MDS and the role of allogeneic transplant that shows that you about double your survival. It was a BMT CTN trial published several years ago that showed you about double your three-year survival if you can find a donor within three months and get to a transplant within six months. And so it just tells you the value of allotransplant and myeloid malignancy in general. In AML we continue to use it for adverse risk disease – TP53 is its own category, I can talk about that separately – but adverse risk AML otherwise, or for patients who don't achieve a really good remission. And I still teach our fellows that an allotransplant decreases your risk of relapse by about 50%. That's still true, but you have to have a group of patients who are at high enough risk of relapse to merit the non-relapse mortality and the chronic graft versus host disease that comes with it. Now, our outcomes with transplant are better because we're better at preventing graft versus host disease with the newer strategies such as post-transplant cyclophosphamide. There are now new FDA-approved drugs for acute and chronic graft versus host disease, ruxolitinib, belumosudil, axatilimab now. So we have better ways of treating it, but we still want to be discriminating about who should get it.  And it's not just a single-minded one-size-fits-all. We learned from the MORPHO study that was published in the JCO last year that if you have FLIT3-positive AML, FLIT3/IDT-positive AML, where we would have said from retrospective studies that your post-transplant survival is 60% give or take, as opposed to 15% or 20% without it, that we can discriminate who should or shouldn't get a transplant. Now that trial was a little bit nuanced because it did not meet its primary endpoint, but it had an embedded randomization based upon MRD status and they used a very sensitive test of measurable residual disease. They used a commercial assay by Invivoscribe that could look at the presence of a FLT3/ITD in the level of 10 to the minus 5th or 10 to the minus 6th. And if you were MRD-negative and you went through a transplant, you didn't seem to get an advantage versus not. That was of maintenance with gilteritinib, I'll just sort of put that on there. But it's telling us more about who should get a transplant and who shouldn't and who should get maintenance after transplant and who shouldn't.  A really compelling study a year ago from I don't know what to call the British group now, we used to call them the MRC and then the NCRI. I'm not quite sure what to call their studies at the moment. But Dr. Jad Othman did a retrospective study a year ago that looked at patients who had NPM1 mutation, the most common mutation AML, and looked to see if you were MRD positive or MRD negative, what the impact of a transplant was. And if you're MRD negative there was not an advantage of a transplant, whereas if you're MRD positive there was. And when they stratified that by having a FLT3 mutation that cracked. If you had a FLT3 mutation at diagnosis but your NPM1 was negative in remission, it was hard to show an advantage of a transplant. So I think we're getting much more discriminating about who should or should not get a transplant by MRD testing for NPM1 and that includes the patients who have a concomitant FLT3 mutation. And we're really trying to learn more and more. Do we really need to be doing transplants in those who are MRD-negative? If you have adverse risk genetics and you're MRD-negative, I'll really need good data to tell me not to do a transplant, but I suspect bit by bit, we'll get that data. And we're looking to see if that's really the case there, too. So measurable residual disease testing is helping us discriminate, but there is still a core role of allogeneic transplant. And to reassure you, compared to, I think your allotransplant days were some time ago if I'm right. Dr. John Sweetenham: Yes. Dr. James Foran: Yeah. Well, compared to when you were doing transplants, they're better now and better for patients now. And we get people through graft versus host disease better, and we prevent it better. Dr. John Sweetenham: That's a great answer, James. Thanks for that. It really does help to put it in context, and I think it also leads us on very nicely into what's going to be my final question for you today and perhaps the trickiest, in a way. I think that everything you've told us today really emphasizes the fact that the complexity of AML treatment has increased, primarily because of an improved understanding of the molecular landscape of the disease. And it's a complicated area now. So do you have any thoughts on what type of clinical environment patients with AML should be evaluated and treated in in 2025? Dr. James Foran: Yeah, I want to give you a kind of a cautious answer to that because, you know, I'm a leukemia doctor. I work at a leukemia center and it's what we focus on. And we really pride ourselves on our outcomes and our diagnostics and our clinical trials and so on. I am very aware that the very best oncologists in America work in private practice and work in community practice or in networks, not necessarily at an academic site. And I also know they have a much harder job than I have. They have to know lung cancer, which is molecularly as complicated now as leukemia, and they have to know about breast cancer and things that I don't even know how to spell anymore. So it's not a question of competence or knowledge. It's a question of infrastructure. I'll also put a little caveat saying that I have been taught by Rich Stone at Dana-Farber, where I did a fellowship a long time ago, and believe Rich is right, that I see different patients than the community oncologists see with AML, they're seeing different people. But with that caveat, I think the first thing is you really want to make sure you've got access to excellence, specialized hematopathology, that you can get expedited cytogenetics and NGS testing results back. There was a new drug, approved just a few months ago, actually, for relapsed AML with a KMT2A rearrangement, revumenib. We didn't talk about the menin inhibitors. I'll mention them in just a second. That's a huge area of expansion and growth for us. But they're not found on NGS platforms. And normal cytogenetics might miss a KMT2A-rearrangement. And we're actually going back to FISH panels, believe it or not, on AML, to try to identify who has a KMT2A-rearrangement. And so you really want to make sure you can access the diagnostic platforms for that.  I think the National Referral Labs do an excellent job. Not always a really fast job, but an excellent job. At my institution, I get NGS results back within three days or four days. We just have an expedited platform. Not everybody has that. So that's the key, is you have to be able to make the diagnosis, trust the pathologist, get expedited results. And then it's the question of trying to access the targeted medications because a lot of them are not carried in hospital on formulary or take time to go through an insurance approval process. So that's its own little headache, getting venetoclax, getting gilteritinib, getting an IDH1 inhibitor in first line, if that's what you're going for. And so I think that requires some infrastructure. We have case managers and nurses who really expedite that and help us with it, but that's a lot of work. The other piece of the puzzle is that we're still with AML in the first month and maybe even the second month. We make everybody worse before we make them better. And you have to have really good blood bank support. I can give an outpatient platelet transfusion or red cell transfusion seven days a week. We're just built for that. That's harder to do if you're in a community hospital and you have to be collaborating with a local blood bank. And that's not always dead easy for somebody in practice. So with those caveats, I do find that my colleagues in community practice do a really good job making the diagnosis, starting people on therapy, asking for help. I think the real thing is to be able to have a regional leukemia center that you can collaborate with, connect with, text, call to make sure that you're finding the right patients who need the next level of diagnostics, clinical trial, transplant consults, to really get the best results.  There was some data at ASH a couple of years ago that looked at – the American Society of Hematology and ASCOs had similar reports – that looked at how do we do in academic centers versus community practice for keeping people on therapy. And on average, people were more likely to get six cycles of therapy instead of three cycles of therapy with azacitidine venetoclax at an academic center. Now, maybe it's different patients and maybe they had different cytogenetics and so on, but I think you have to be patient, I think you have to collaborate. But you can treat those patients in the community as long as you've got the infrastructure in place. And we've learned with virtual medicine, with Zoom and other platforms that we can deliver virtual care more effectively with the pandemic and beyond. So I think we're trying to offer virtual consults or virtual support for patients so they can stay in their home, stay in their community, stay with their oncologists, but still get access to excellent diagnostics and supportive care and transplant consults, and so on. I hope that's a reasonable answer to that question. It's a bit of a nuanced answer, which is, I think there's an important role of a leukemia center, and I think there's a really fundamental role of keeping somebody in the community they live in, and how we collaborate is the key to that. And we've spent a lot of time and effort working with the oncologists in our community to try to accomplish that.  John, I want to say two other things. I didn't mention in the molecular platforms that NPM1 mutations, we can now target those on clinical trials with menin inhibitors. We know that NPM1 signals through the Hoxa9/Meis1 pathway. We know that similar pathways are important in KMT2A rearrangements. We know that there are some other rare leukemias like those with NUP98 rearrangement. We can target those with menin inhibitors. The first menin inhibitor, revuminib, was approved by the FDA for KMT2A. We have others going to the FDA later this year for NPM1. There are now pivotal trials and advanced expanded phase 1/2 studies that are showing 30% response rates. And we're looking to see can we add those into the first-line therapy. So, we're finding more targets.  I'll say one last thing about molecular medicine. I know I'm a little off topic here, but I always told patients that getting AML was kind of like being struck by lightning. It's not something you did. Now, obviously, there are risk factors for AML, smoking or obesity or certain farm environments, or radioactive exposures and so on. But bit by bit, we're starting to learn about who's predisposed to AML genetically. We've identified really just in the last five or eight years that DDX41 mutations can be germline half the time. And you always think germline mutations are going to cause AML in a younger patient, but the median age is 60 to 70 just like other AMLs. They actually might do pretty well once they get AML. We've reported that in several papers. And so we're trying to understand who that has a RUNX1 mutation needs germline testing, who with a DDX41 needs germline testing. And we're trying to actually come up with a cleaner pathway for germline testing in patients to really understand predisposition, to help with donor selection, to help with family counseling. So I think those are other areas where a leukemia center can contribute for somebody in who’s community practice to understand genomic or genetic complexity in these patients. And we're starting to develop the databases that support that. Dr. John Sweetenham: Yeah, great. Thanks, James. I loved your answer about the clinical environment too. And I know from a patient-centric perspective that I know that patients would certainly appreciate the fact that we're in a situation now where the folks taking care of them will make every effort to keep them close to home if they possibly can.  I want to thank you, James, for an incredible review of a very complex subject and I think you did a great job. I think we all will have learned a lot. And thanks again for being willing to share your insights with us today on the ASCO Daily News Podcast. Dr. James Foran: John, it's my pleasure. And as you know, I'll do anything for a latte, so no problem at all. Dr. John Sweetenham: Okay. I owe you one, so thank you for that.  And thank you to our listeners for your time today. You'll find links to the studies we've discussed today in the transcript of this episode. And finally, if you value the insights that you hear on the ASCO Daily News Podcast, please take a moment to rate, review and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement. Find out more about today’s speakers:  Dr. John Sweetenham  Dr. James Foran Follow ASCO on social media: @ASCO on Twitter ASCO on Bluesky ASCO on Facebook  ASCO on LinkedIn  Disclosures:    Dr. John Sweetenham:    No relationships to disclose Dr. James Foran: Stock and Other Ownership Interests: Aurinia Pharmaceuticals Consulting or Advisory Role: Peerview, CTI BioPharma Corp, Remix Therapeutics, Cardinal Health, Medscape, Syndax, Autolus Therapeutics Research Funding (Inst.): Chordia Therapeutics, Abbvie, Actinium Pharmaceuticals, Kura Oncology, Sellas Life Sciences, Novartis, Roivant, Celgene/Bristol-Myers Squibb, Astellas Pharma, SERVIER Travel, Accommodations, Expenses: Peerview
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  • Practice-Informing Research Across GU Oncology: Highlights From GU25
    Dr. Neeraj Agarwal and Dr. Peter Hoskin discuss key abstracts in GU cancers from the 2025 ASCO Genitourinary Cancers Symposium, including novel therapies in prostate, bladder, and kidney cancer and the impact of combination therapies on patient outcomes. TRANSCSRIPT Dr. Neeraj Agarwal: Hello, and welcome to the ASCO Daily News Podcast. I'm Dr. Neeraj Agarwal, the director of the Genitourinary Oncology Program and professor of medicine at the Huntsman Cancer Institute at the University of Utah, and editor-in-chief of ASCO Daily News. Today, we'll be discussing practice-informing abstracts and other key advances in GU oncology featured at the 2025 ASCO Genitourinary Cancers Symposium. Joining me for this discussion is Dr. Peter Hoskin, the chair of this year's ASCO GU Symposium. Dr. Hoskin is a professor in clinical oncology in the University of Manchester and honorary consultant in clinical oncology at the Christie Hospital, Manchester, and University College Hospital London, in the United Kingdom. Our full disclosures are available in the transcript of this episode. Peter, thank you for joining us today. Dr. Peter Hoskin: Thank you so much, Neeraj. I am very pleased to be here. Dr. Neeraj Agarwal: The GU meeting highlighted remarkable advancements across the spectrum of GU malignancies. What stood out to you as the most exciting developments at the ASCO GU Symposium?  Dr. Peter Hoskin: The theme of this year's meeting was "Driving Innovation, Improving Patient Care," and this reflected ASCO GU's incredible milestone in GU cancer research over the years. We were thrilled to welcome almost 6,000 attendees on this occasion from over 70 countries, and most of them were attending in person and not online, although this was a hybrid meeting. Furthermore, we had more than 1,000 abstract submissions. You can imagine then that it fostered fantastic networking opportunities and facilitated valuable knowledge and idea exchanges among experts, trainees, and mentees. So, to start I’d like to come back to you for a second because the first day started with a focus on prostate cancer and some of the key clinical trials. And congratulations to you, Neeraj, on sharing the data from the TALAPRO-2 trial, which we were eagerly awaiting. I'd love to get your thoughts on the data that you presented. Could you tell us more about that trial, Abstract LBA18?  Dr. Neeraj Agarwal: Yes, Peter, I agree with you. It was such an exciting conference overall and thank you for your leadership of this conference. So, let’s talk about the TALAPRO-2 trial. First of all, I would like to remind our audience that the combination of talazoparib plus enzalutamide was approved by the U.S. FDA in June 2023 in patients with metastatic castration-resistant prostate cancer harboring HRR gene alterations, after this combination improved the primary endpoint of radiographic progression-free survival compared to enzalutamide alone in the randomized, double-blind, placebo-controlled, multi-cohort phase 3 TALAPRO-2 trial. In the abstract I presented at ASCO GU 2025, we reported the final overall survival data, which was a key alpha-protected secondary endpoint in cohort 1, which enrolled an all-comer population of patients with mCRPC. So, at a median follow-up of around 53 months, in the intention-to-treat population, the combination of talazoparib plus enzalutamide significantly reduced the risk of death by 20% compared to enzalutamide alone, with a median OS of 45.8 months in the experimental arm versus 37 months in the control arm, which was an active control arm of enzalutamide. This improvement was consistent in patients with HRR alterations with a hazard ratio of 0.54 and in those with non-deficient or unknown HRR status, with a hazard ratio of 0.87. In a post hoc analysis, the hazard ratio for OS was 0.78 favoring the combination in those patients who did not have any HRR gene alteration in their tumors by both tissue and ctDNA testing. Consistent with the primary analysis, the updated rPFS data also favored the experimental arm with a median rPFS of 33.1 compared to 19.5 months in the control arm, and a hazard ratio of 0.667. No new safety signals were identified with extended follow-up. Thus, TALAPRO-2 is the first PARP inhibitor plus ARPI study to show a statistically significant and a clinically meaningful improvement in OS compared to standard-of-care enzalutamide as first-line treatment in patients with mCRPC unselected for HRR gene alterations. Dr. Peter Hoskin: Thank you, Neeraj. That’s a great summary of the data presented and very important data indeed. There was another abstract also featured in the same session, Abstract 20, titled “Which patients with metastatic hormone-sensitive prostate cancer benefit more from androgen receptor pathway inhibitors? STOPCAP meta-analyses of individual participant data.” Neeraj, could you tell us more about this abstract? Dr. Neeraj Agarwal: Absolutely, I would be delighted to. So, in this meta-analysis, Dr. David Fischer and colleagues pooled individual participant data from different randomized phase 3 trials in the mHSPC setting to assess the potential ARPI effect modifiers and determine who benefits more from an ARPI plus ADT doublet. The primary outcome was OS for main effects and PFS for subgroup analyses. Prostate cancer specific survival was a sensitivity outcome. The investigators pooled data from 11 ARPI trials and more than 11,000 patients. Overall, there was a clear benefit of adding an ARPI on both OS and PFS, with hazard ratios of 0.66 and 0.51, respectively, representing a 13% and 21% absolute improvement at 5 years, respectively, with no clear difference by the class of agent. When stratifying the patients by age group, the effects of adding an ARPI on OS and PFS were slightly smaller in patients older than 75, than in those younger than 65, or aged between 65 and 75 years. Notably, in the trials assessing the use of abiraterone, we saw very little OS effects in the group of patients older than 75, however there was some benefit maintained in prostate-cancer specific survival, suggesting that other causes of death may be having an impact. The effects of the other ARPIs, or ‘lutamides’ as I would call them, were similar across all three age subgroups on both OS and PFS. Therefore, the majority of patients with mHSPC benefit from the addition of ARPIs, and the benefits/risks of abiraterone and other ‘amides’ must be considered in older patients.  Dr. Peter Hoskin: Thanks, Neeraj. Another great summary relevant to our day-to-day practice. Of course, there’s ongoing collection of individual patient data from other key trials, which will allow robust comparison of ARPI doublet with triplet therapy (including docetaxel), guiding more personalized treatment.   Dr. Neeraj Agarwal: I agree with you, Peter, we need more data to help guide personalized treatment for patients with mHSPC and potentially guide de-escalation versus escalation strategies. Now, moving on to a different setting in prostate cancer, would you like to mention Abstract 17 titled, “Overall survival and quality of life with Lu-PSMA-617 plus enzalutamide versus enzalutamide alone in poor-risk, metastatic, castration-resistant prostate cancer in ENZA-p (ANZUP 1901),” presented by Dr. Louise Emmett? Dr. Peter Hoskin: Of course I will. So, ENZA-p was a multicenter, open-label, randomized, phase 2 trial conducted in Australia. It randomized 163 patients into adaptive doses (2 or 4 cycles) of Lu-PSMA-617 plus enzalutamide versus enzalutamide alone as first-line treatment in PSMA-PET-CT-positive, poor-risk, mCRPC. The interim analysis of ENZA-p with median follow-up 20 months showed improved PSA-progression-free survival with the addition of Lu-PSMA-617 to enzalutamide. Here, the investigators reported the secondary outcomes, overall survival, and health-related quality of life (HRQOL). After a median follow up of 34 months, overall survival was longer in the combination arm compared to the enzalutamide arm, with a median OS of 34 months compared to 26 months; with an HR of 0.55. Moreover, the combination improved both deterioration-free survival and health-related quality of life indicators for pain, fatigue, physical function, and overall health and quality of life compared to the control arm. Consistent with the primary analysis, the rPFS also favored the experimental arm with a median rPFS of 17 months compared to 14 months with a HR of 0.61. So, the addition of LuPSMA improved overall survival, and HRQOL in patients with high-risk mCRPC. Dr. Neeraj Agarwal: Thank you, Peter. Great summary, and promising results with Lu-177 and ARPI combination in first line treatment for mCRPC among patients who had two or more high risk features associated with early enzalutamide failure. Before we move on to bladder cancer, would you like to tell us about Abstract 15 titled, “World-wide oligometastatic prostate cancer (omPC) meta-analysis leveraging individual patient data (IPD) from randomized trials (WOLVERINE): An analysis from the X-MET collaboration,” presented by Dr. Chad Tang?  Dr. Peter Hoskin: Sure. So, with metastatic-directed therapy (MDT), we have a number of phase 2 studies making up the database, and the X-MET collaboration aimed to consolidate all randomized data on oligometastatic solid tumors. This abstract presented pooled individual patient data from all the published trials involving patients with oligometastatic prostate cancer who received MDT alongside standard of care (SOC) against SOC alone. The analysis included data from five trials, encompassing 472 patients with oligometastatic prostate cancer, and followed for a median of 41 months. Patients were randomly assigned in a 1:1 ratio to receive either MDT plus SOC or SOC alone. The addition of MDT significantly improved PFS. The median PFS was 32 months with MDT compared to 14.9 months with SOC alone, with an HR of 0.45. Subgroup analyses further confirmed the consistent benefits of MDT across different patient groups. Regardless of factors like castration status, receipt of prior primary treatment, stage, or number of metastases, MDT consistently improved PFS. In patients with mHSPC, MDT significantly delayed the time to castration resistance by nine months, extending it to a median of 72 months compared to 63 months in the SOC group with an HR of 0.58. In terms of OS, the addition of MDT improved the 48-month survival rate by 12%, with OS rates of 87% in the MDT+SOC group compared to 75% in the SOC alone group. Dr. Neeraj Agarwal: Thank you, Peter. These data demonstrate that adding MDT to systemic therapy significantly improves PFS, rPFS, and castration resistance-free survival, reinforcing its potential role in the treatment of oligometastatic prostate cancer. So, let’s switch gears to bladder cancer and start with Abstract 658 reporting the OS analysis of the CheckMate-274 trial. Would you like to tell us about this abstract?  Dr. Peter Hoskin: Yes, sure, Neeraj. This was presented by Dr. Matt Milowsky, and it was additional efficacy outcomes, including overall survival, from the CheckMate-274 trial which evaluated adjuvant nivolumab versus placebo in patients with high-risk muscle-invasive bladder cancer after radical surgery. The phase 3 trial previously demonstrated a significant improvement in disease-free survival with nivolumab. With a median follow-up of 36.1 months, disease-free survival was longer with nivolumab compared to placebo across all patients with muscle-invasive bladder cancer, reducing the risk of disease recurrence or death by 37%. Among patients who had received prior neoadjuvant cisplatin-based chemotherapy, nivolumab reduced this risk by 42%, whilst in those who had not received chemotherapy, the risk was reduced by 31%. Overall survival also favored nivolumab over placebo, reducing the risk of death by 30% in all patients with muscle-invasive bladder cancer and by 52% in those with tumors expressing PD-L1 at 1% or higher. Among patients who had received prior neoadjuvant chemotherapy, nivolumab reduced the risk of death by 26%, whilst in those who had not received chemotherapy, the risk was reduced by 33%. Alongside this, the safety profile remained consistent with previous findings. Dr. Neeraj Agarwal: Thank you, Peter, for such a nice overview of this abstract. These results reinforce adjuvant nivolumab as a standard of care for high-risk muscle-invasive bladder cancer, offering the potential for a curative outcome for our patients. Dr. Peter Hoskin: I agree with you Neeraj. Perhaps you would like to mention Abstract 659 titled, “Additional efficacy and safety outcomes and an exploratory analysis of the impact of pathological complete response (pCR) on long-term outcomes from NIAGARA.” Dr. Neeraj Agarwal: Of course. Dr. Galsky presented additional outcomes from the phase 3 NIAGARA study, which evaluated perioperative durvalumab combined with neoadjuvant chemotherapy in patients with muscle-invasive bladder cancer. The study previously demonstrated a significant improvement in event-free survival and overall survival with durvalumab compared to chemotherapy alone, with a manageable safety profile and no negative impact on the ability to undergo radical cystectomy. Among the 1,063 randomized patients, those who received durvalumab had a 33% reduction in the risk of developing distant metastases or death and a 31% reduction in the risk of dying from bladder cancer compared to those who received chemotherapy alone. More patients who received durvalumab achieved a pathological complete response at the time of surgery with 37% compared to 28% in the chemotherapy-alone group. Patients who achieved a pathological complete response had better event-free survival and overall survival compared to those who did not. In both groups, durvalumab provided additional survival benefits, reducing the risk of disease progression or death by 42% and the risk of death by 28% in patients with a pathological complete response, while in those patients without a pathological complete response, the risk of disease progression or death was reduced by 23% and the risk of death by 16% when durvalumab was added to the chemotherapy. Immune-mediated adverse events occurred in 21% of patients in the durvalumab group compared to 3% in the chemotherapy-alone group, with grade 3 or higher events occurring in 3% compared to 0.2%. The most common immune-related adverse events included hypothyroidism in 10% of patients treated with durvalumab compared to 1% in the chemotherapy-alone group, and hyperthyroidism in 3% versus 0.8%. At the time of the data cutoff, these adverse events had resolved in 41% of affected patients in the durvalumab group and 44% in the chemotherapy-alone group. Dr. Peter Hoskin: Thank you, Neeraj, for the great summary. These findings further support the role of perioperative durvalumab as a potential standard of care for patients with muscle-invasive bladder cancer. Dr. Neeraj Agarwal: I concur with your thoughts, Peter. Before wrapping up the bladder cancer section, would you like to mention Abstract 664 reporting updated results from the EV-302 trial, which evaluated enfortumab vedotin in combination with pembrolizumab compared to chemotherapy as first-line treatment for patients with previously untreated locally advanced or metastatic urothelial carcinoma? Dr. Peter Hoskin: Yes, of course. Dr. Tom Powles presented updated findings from the EV-302 study, and in this abstract presented 12 months of additional follow-up for EV-302 (>2 y of median follow-up) and an exploratory analysis of patients with confirmed complete response (cCR). The study had a median follow-up of 29.1 months and previously demonstrated significant improvements in progression-free survival and overall survival with enfortumab vedotin and pembrolizumab. This is now the standard of care in global treatment guidelines. Among the 886 randomized patients, enfortumab vedotin and pembrolizumab reduced the risk of disease progression or death by 52% and the risk of death by 49% compared to chemotherapy. The survival benefit was consistent regardless of cisplatin eligibility or the presence of liver metastases. The confirmed objective response rate was higher with enfortumab vedotin and pembrolizumab at 67.5% compared to 44.2% with chemotherapy. The median duration of response was 23.3 months with enfortumab vedotin and pembrolizumab compared to 7.0 months with chemotherapy. A complete response was achieved in 30.4% of patients in the enfortumab vedotin and pembrolizumab group compared to 14.5% in the chemotherapy group, with the median duration of complete response not yet reached in the enfortumab vedotin and pembrolizumab group compared to 15.2 months in the chemotherapy group. Severe treatment-related adverse events occurred in 57.3% of patients treated with enfortumab vedotin and pembrolizumab compared to 69.5% in the chemotherapy group, while in patients who achieved a complete response, severe adverse events occurred in 61.7% of those treated with enfortumab vedotin and pembrolizumab compared to 71.9% with chemotherapy. Treatment-related deaths were reported in 1.1% of patients treated with enfortumab vedotin and pembrolizumab compared to 0.9% with chemotherapy, with no treatment-related deaths occurring in those who achieved a complete response. These findings clearly confirm the durable efficacy of enfortumab vedotin and pembrolizumab, reinforcing its role as the standard of care for the first-line treatment of patients with locally advanced or metastatic urothelial carcinoma, and no new safety concerns have been identified. Dr. Neeraj Agarwal: Thank you for this great summary. Moving on to kidney cancer, let’s talk about Abstract 439 titled, “Nivolumab plus cabozantinib (N+C) vs sunitinib (S) for previously untreated advanced renal cell carcinoma (aRCC): Final follow-up results from the CheckMate-9ER trial.” Dr. Peter Hoskin: Sure. Dr. Motzer presented the final results from the phase 3 CheckMate-9ER trial, which compared the combination of cabozantinib and nivolumab against sunitinib in previously untreated advanced renal cell carcinoma. The data after more than five years follow-up show that the combination therapy provided sustained superior efficacy compared to sunitinib. In terms of overall survival, we see an 11-month improvement in median OS, 46.5 months for the cabo-nivo versus 35.5 months for sunitinib and a 42% reduction in the risk of disease progression or death, with median progression-free survival nearly doubling – that’s 16.4 months in the combination group and 8.3 months with sunitinib. Importantly, the safety profile was consistent with the known safety profiles of the individual medicines, with no new safety concerns identified. Dr. Neeraj Agarwal: Great summary, Peter. These data further support the efficacy of cabo-nivo combination therapy in advanced renal cell carcinoma, which is showing a 11-month difference in overall survival. Dr. Peter Hoskin: Neeraj, before wrapping up this podcast, would you like to tell us about Abstract 618? This is titled “Prospective COTRIMS (Cologne trial of retroperitoneal lymphadenectomy in metastatic seminoma) trial: Final results.” Dr. Neeraj Agarwal: Sure, Peter. I would be delighted to. Dr Heidenrich from the University of Cologne in Germany presented the COTRIMS data evaluating retroperitoneal LN dissection in patients with clinical stage 2A/B seminomas. Seminomas are classified as 2A or B when the disease spreads to the retroperitoneal lymph nodes of up to 2 cm (CS IIA) or of more than 2 cm to up to 5 cm (CS 2B) in maximum diameter, respectively. They account for 10-15% of seminomas and they are usually treated with radiation and chemotherapy. However, radiation and chemo can be associated with long-term toxicities such as cardiovascular toxicities, diabetes, solid cancers, leukemia, particularly for younger patients. From this standpoint, Dr Heidenrich and colleagues evaluated unilateral, modified template, nerve-sparing retroperitoneal lymph node dissection as a less toxic alternative compared to chemo and radiation. They included 34 patients with negative AFP, beta-HCG, and clinical stage 2A/B seminomas. At a median follow-up of 43.2 months, the trial demonstrated great outcomes: a 99.3% treatment-free survival rate and 100% overall survival, with only four relapses. Antegrade ejaculation was preserved in 88% of patients, and severe complications such as grade 3 and 4 were observed in 12% of patients. Pathological analysis revealed metastatic seminoma in 85% of cases, with miR371 being true positive in 23 out of 24 cases and true negative in 100% of cases. It appears to be a valid biomarker for predicting the presence of lymph node metastases. These findings highlight retroperitoneal lymph node dissection is feasible; it has low morbidity, and excellent oncologic outcomes, avoiding overtreatment in 80% of patients and sparing unnecessary chemotherapy or radiotherapy in 10-15% of cases. Dr. Peter Hoskin: Great summary and important data on retroperitoneal lymphadenectomy in metastatic seminoma. These findings will help shape clinical practice. Any final remarks before we conclude today's podcast? Dr. Neeraj Agarwal: Before wrapping up this podcast, I would like to say that we have reviewed several abstracts addressing prostate, bladder, kidney cancers, and seminoma, which are impacting our medical practices now and in the near future. Peter, thank you for sharing your insights with us today. These updates are undoubtedly exciting for the entire GU oncology community, and we greatly appreciate your valuable contribution to the discussion and your leadership of the conference. Many thanks. Dr. Peter Hoskin: Thank you, Neeraj. Thank you for the opportunity to share this information more widely. I’m aware that whilst we have nearly 6,000 delegates, there are many other tens of thousands of colleagues around the world who need to have access to this information. And it was a great privilege to chair this ASCO GU25. So, thank you once again, Neeraj, for this opportunity to share more of this information that we discussed over those few days. Dr. Neeraj Agarwal: Thank you, Peter. And thank you to our listeners for joining us today. You will find links to the abstracts discussed today on the transcript of this episode. Finally, if you value the insights that you hear on the ASCO Daily News podcast, please take a moment to rate, review, and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement.  Find out more about today’s speakers:   Dr. Neeraj Agarwal    @neerajaiims    Dr. Peter Hoskin Follow ASCO on social media:      @ASCO on Twitter      ASCO on Bluesky  ASCO on Facebook      ASCO on LinkedIn      Disclosures: Dr. Neeraj Agarwal: Consulting or Advisory Role: Pfizer, Bristol-Myers Squibb, AstraZeneca, Nektar, Lilly, Bayer, Pharmacyclics, Foundation Medicine, Astellas Pharma, Lilly, Exelixis, AstraZeneca, Pfizer, Merck, Novartis, Eisai, Seattle Genetics, EMD Serono, Janssen Oncology, AVEO, Calithera Biosciences, MEI Pharma, Genentech, Astellas Pharma, Foundation Medicine, and Gilead Sciences Research Funding (Institution): Bayer, Bristol-Myers Squibb, Takeda, Pfizer, Exelixis, Amgen, AstraZeneca, Calithera Biosciences, Celldex, Eisai, Genentech, Immunomedics, Janssen, Merck, Lilly, Nektar, ORIC Pharmaceuticals, Crispr Therapeutics, Arvinas Dr. Peter Hoskin: Research Funding (Institution): Varian Medical Systems, Astellas Pharma, Bayer, Roche, Pfizer, Elekta, Bristol Myers  
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  • Therapeutic Advances Across GI Cancers: Highlights From GI25
    Dr. Shaalan Beg and Dr. David Wang discuss key abstracts in GI cancers from the 2025 ASCO Gastrointestinal Cancers Symposium, including major advances in CRC, neoadjuvant approaches in esophageal cancer, and innovative studies on ctDNA. TRANSCRIPT Dr. Shaalan Beg: Hello and welcome to the ASCO Daily News Podcast. I'm Dr. Shaalan Beg. I'm a medical oncologist and an adjunct associate professor at UT Southwestern Medical Center in Dallas. Today, we're bringing you some key highlights from the 2025 ASCO Gastrointestinal Cancers Symposium, and I'm delighted to be joined by the chair of GI25, Dr. David Wang. Dr. Wang is a GI medical oncologist at the University of Michigan. Our full disclosures are available in the transcript of this episode.  Dr. Wang, thanks for coming on the podcast today. Dr. David Wang: Well, thank you. It's a pleasure to be here. Dr. Shaalan Beg: GI25 featured major therapeutic advances across the spectrum of GI malignancies, and it was exciting to hear about innovations and novel approaches that are shaping the future of our field. Before we start talking about specific abstracts, could you share some of your key highlights from the meeting? Dr. David Wang: Sure. Our theme this year was “Breaking Boundaries to Enhance Patient Centered Care.” Past years’ themes have focused more on precision oncology, but we wanted to broaden our focus on patients and to be more holistic, which kind of led us into some of the Intersection [sessions] that we had. Each day started with a different Intersection. The first one was “Emerging Therapies in GI Cancers”, where invited speakers talked about bispecific antibody drug conjugates, theranostics, CAR T and other cell-based therapies. The second day was on “Personalized Risk Assessment for GI Cancers,” and this included looking at polygenic risk scores for colorectal cancer, microRNAs and liquid biopsies such as exosomes and pancreatic cancer and non-endoscopic screening modalities in esophageal cancer. And on our final day, we wanted to talk about “Integrative Oncology and Integrative Medicine,” looking at evidence-based uses of acupuncture and supplements in patients who are receiving treatment for cancer, mindfulness-based practices and exercise. And of course, we had a fantastic keynote talk by Dr. Pamela Kunz from the Yale School of Medicine titled, “Disrupting Gastrointestinal Oncology: Shattering Barriers with Inclusive Science.” She highlighted the intersection of science, patient care, and health and gender equity. And I would encourage your podcast listeners to access the lecture in ASCO's Meeting Library if they haven't yet had a chance to hear Dr. Kunz’s wonderful lecture.  We were really happy this year because the attendance hit a new record. We had over 5,000 people attend either in person or virtually from their home or office, and we had almost 1,000 abstracts submitted to the meeting, so these were either record or near record numbers. We offered a lot of different networking opportunities throughout the meeting, and attending found these to be incredibly rewarding and important and this will continue to be an area of emphasis in future meetings. Dr. Shaalan Beg: Let's take a deeper dive into the exciting studies presented at GI25. The late breaking abstract LBA143 was CheckMate-8HW. This was the first results of NIVO + IPI versus NIVO monotherapy for MSI-high metastatic colorectal cancer. What are your thoughts about this study? Dr. David Wang: Yeah, so we know that colorectal cancer patients with MSI-high tumors don't necessarily respond well to chemotherapy. And we were fortunate because last year CheckMate-8HW actually looked at two different arms – so this was NIVO + IPI compared to standard of care chemotherapy and showed its very significant improvement in median progression-free survival. And that was actually published in the New England Journal of Medicine back in November of 2024. This year's presentation actually focused now on NIVO + IPI versus NIVO monotherapy. And as you know IPI+NIVO can be quite toxic. So this was an important analysis to be done. So we know that NIVO is definitely more easily tolerated. So what was interesting was that the 2-year and 3-year progression-free survival not surprisingly favored IPI+NIVO and this was statistically significant. And the overall response rate was also better with IPI+NIVO versus NIVO alone. I know we're always concerned about toxicities and there were higher grade 3 and 4 toxicity incidences in the combination arm versus the monotherapy arm, but overall, only about 28 additional events in several hundred patients treated. So I think that's well-tolerated. Our discussant Dr. Wells Messersmith actually said that, with this new data, he would consider doing combination immunotherapy in any patient that presented in the front line with MSI-high or deficient mismatch repair colorectal cancer that was metastatic. Dr. Shaalan Beg: One of the focuses for directing first-line therapy for colorectal cancer has been right and left sided colon cancer because we know these are two different cancers with their own unique molecular subtypes. We heard on Abstract 17, the DEEPER trial, the final analysis of modified FOLFOXIRI plus cetuximab versus bevacizumab for RAS wild-type and left sided metastatic colorectal cancer. How do you summarize the findings of this study and what should our readers be aware of? Dr. David Wang: Interestingly, this was a phase 2 study and the emphasis of the abstract was actually a subgroup analysis of those patients with RAS wild-type and BRAF wild-type as well as left sided cancers. So, I think the entire study enrolled 359 patients, but the analysis that was discussed at the meeting really focused on 178 patients that fit that characteristic. Very similar to what we've seen in prior studies, left-sided tumors have better response to cetuximab versus bevacizumab. And if you flip it so that you now are looking at right sided tumors, targeting EGFR is actually detrimental. The depth of response was better with cetuximab in these left sided RAS and BRAF mutant tumors. And so the lead author actually suggested that this could be a new first-line standard of care. And the question is, is there a benefit of doing this triple agent regimen with modified FOLFIRINOX? We know there's a lot more toxicity with that. Not clear that there's a benefit for that over FOLFOX, maybe in younger patients that could tolerate it. When our discussant, again Dr. Wells Messersmith, spoke about this, he said that, in his practice he would, again, favor cetuximab over bevacizumab in combination with chemo, these left-sided RAS and BRAF wild-type tumors, but that he would actually prefer a doublet versus a triplet chemo regimen, and that is consistent with the current NCCN guidelines. Dr. Shaalan Beg: Another area where colorectal cancer has been a wonderful model to study new technology has been in the area of circulating tumor DNA (ctDNA). And the BESPOKE CRC trial is looking to see if ctDNA can inform adjuvant treatment decisions for stage II and III colorectal cancer. And in Abstract 15, we heard final results of the BESPOKE CRC sub-cohort. What were the findings there? Dr. David Wang: BESPOKE CRC is another one of these important ctDNA studies. It was an observational study, not a randomized trial, but it did provide a lot of different insights to us. We know that there were over 1,700 patients enrolled, and so it was reported that this is the largest ctDNA study in colorectal cancer performed in the United States. And they were able to analyze over 1,100 patients.  Some of the key findings were that postoperative adjuvant therapy management decisions actually changed in 1 out of 6 patients, so that's pretty significant. In terms of surveillance, we know that patients who have ctDNA positivity, this is prognostic of recurrence. In terms of patients who have positive ctDNA post-surgery, it looked like, at least in this observational study, the majority of patients who received any benefit were those who had positive ctDNA. So adjuvant therapy, even in stage II and stage III patients seemed to only benefit those patients who have positive ctDNA. I think that does raise the question, and this also was brought up in the discussion, which is “Can we de-escalate adjuvant therapy in terms of patients who are ctDNA-negative post-op?” And Dr. Richard Kim from Moffitt felt that we are not yet there. Obviously, we need randomized control trials where we are taking ctDNA results and then randomizing patients to receive adjuvant or non-adjuvant to really know the difference.  Other questions that come up with use of ctDNA include: What do you do with these patients who turn positive? This study for BESPOKE actually followed patients out to two years after surgery. So what you do with a positive ctDNA result wasn't really clear. It seems to suggest that once you turn positive, patients go on to more intensive surveillance. You know, again as an observation, patients who did turn positive were able to go to metastasis-directed therapy much more quickly. And again, this was supposedly to improve their curative intent therapy. And I think the other question that has been brought up all the time is, is this really cost effective? Patients want to know, and we want to give patients that information, but I think we're still stuck with what to do with a positive ctDNA level in a patient that's on surveillance because no randomized control studies have actually suggested that we need to start systemic therapy right away. Dr. Shaalan Beg: Yeah. And I guess in terms of practice informing or practice changing, these results may not give us a clear answer. But because a lot of patients are asking for these tests, it does give us some real world experiences on what to expect in terms of conversion of these positive into negative and the outcome so we can have a shared decision making with our patients in the clinic and then come up with a determination on whether ctDNA for molecular residual disease is something which would be worthwhile for the care of our patient. But more to come, I guess, in coming years to answer different problems around this challenge. Dr. David Wang: Yes, I agree. Dr. Shaalan Beg: The BREAKWATER trial looked at the use of encorafenib, cetuximab and chemotherapy for BRAF V600E-mutant metastatic colorectal cancer. We've covered this combination for a second- third-line treatment in metastatic colorectal cancer previously. Abstract 16 from GI25 was evaluating the use of this regimen in the first-line space. Everyone was looking forward to these results, and what did the investigators present? Dr. David Wang: I think this is, as you mentioned, a nice follow up to later lines of therapy where Dr. Kopetz from MD Anderson pioneered use of encorafenib, cetuximab and binimetinib in the BEACON trial. Everybody was kind of curious what would happen now if you use encorafenib plus cetuximab plus chemotherapy in the first-line setting. And so this is an interim analysis that was pre-planned in the phase 3 open label BREAKWATER trial. And even though there were three arms, and so the three arms were encorafenib plus cetuximab, encorafenib plus cetuximab plus FOLFOX, or standard of care chemo, only two arms were presented in the abstract. So basically looking at encorafenib plus cetuximab and FOLFOX-6 versus standard of care therapy, and the overall response rate was statistically significant with a 60.9% overall response rate encorafenib plus cetuximab plus chemo arm versus standard of care chemo was only 40%. The interim overall survival also was different. It was 92% versus 87% at 6 months and 79% versus 66% at 12 months, again favoring the chemotherapy plus encorafenib plus cetuximab. In terms of the statistics, the p was 0.0004. However, the pre-plan analysis required the p-value to be 1x10 to the -8. And so even though this looks really good, it hasn't quite met its pre-specified significance level. The good thing is that this is only interim analysis and the study is ongoing with future analysis planned.  So the real question is: Does it matter when we actually use this regimen? We know that the regimen's approved in the second third-line setting. What about in the first line? And there was some preclinical data that the discussant reviewed that shows that patients actually benefit if this is done in the first-line setting. For example, there was some preclinical data showing that even FOLFIRI, for example, can upregulate RAS, which would make tumors more resistant to this combination. This was thought to be practice-changing in a patient that has B600E showing up treatment naive that we should probably consider this regimen. And actually this did receive accelerated FDA approval about a month ago. Dr. Shaalan Beg: Yeah, and for what it's worth, I put up a Twitter poll asking my Twitter followers on how the BREAKWATER trial results will change their approach for newly diagnosed BRAF mutated colorectal cancer. We got 112 responses; 72% said that they will incorporate encorafenib, cetuximab, FOLFOX for their frontline BRAF mutated patients. But 23% said that they would like to wait for overall survival results. Dr. David Wang: Wow, that's interesting. They really want that 1x10 to the -8. Dr. Shaalan Beg: I guess so. All right. Let's change gears and talk about esophageal cancer. LBA329 was the SCIENCE study which presented preliminary results from a randomized phase 3 trial comparing sintilimab and chemoradiotherapy plus sintilimab versus chemoradiotherapy for neoadjuvant resectable locally advanced squamous esophageal cancer. Where are we in this space? Dr. David Wang: Okay. So, yeah, this was an interesting trial. Again, just to set the context, esophageal squamous cell carcinoma is more prevalent in Asia. And the study sites as well as the patients were mostly from Asia. So this was again a phase 3 trial with interim results. They only rolled 146 out of the planned 420 for this interim analysis. And yeah, they're using immune checkpoint inhibitor that we don't use in the United States, sintilimab, combined with their two standards of neoadjuvant therapy, either chemotherapy, which is more common in Asia, or or chemoradiation, which is more common in the US and Western Europe, versus chemoradiation. And so they actually had two primary endpoints, but only were reporting one. So their two primary endpoints were pathCR and the other one was event-free survival. The event-free survival, again, was not reported at the meeting.  What they found was that in terms of pathCR rate, if you take the two arms that are really informative about that, chemoradiation plus sintilimab versus chemoradiation alone, the pathCR rate was 60% versus 47%. We know that chemo alone doesn't induce as much of a pathCR rate, and that was 13%. So it was found that the delta in terms of pathCR between the chemoradiation arms, one with sintilimab and one without, was significant. And this actually confirms data again from Asia, like for the ESCORT-NEO trial where it used another immune checkpoint inhibitor pembrolizumab in addition to neoadjuvant chemo.  So as our discussant for this abstract said, yes, we know that radiation combined with chemotherapy improves pathCR rates, but we have recent data from the ESOPEC trial, we don't know that that necessarily will translate to overall survival. So again, waiting for additional enrollments and longer term follow up before incorporating this into clinical care here. Dr. Shaalan Beg: So David, how do the results of the SCIENCE trial compare with our practice in the United States and ongoing studies asking questions for neoadjuvant therapy for esophageal carcinoma in the United States? Dr. David Wang: I think obviously immune checkpoint inhibitor in the new adjuvant setting is important. Jennifer Eads at UPenn is running that EA2174 which is looking at chemoradiation plus or minus nivolumab, and then in non-pathCR responders randomized to adjuvant nivolumab per CheckMate 577 or nivolumab with intensification adding ipilimumab. We know that the ESOPEC trial just came out, and was published actually during the meeting, and that really focuses on adenocarcinomas. So adenocarcinomas of the GE junction, distal esophagus, now, we would probably treat very similarly to gastric using perioperative FLOT. However, the standard in the US for esophageal squamous cell carcinoma remains neoadjuvant chemoradiation. We know that squamous cell carcinomas are more exquisitely sensitive to radiotherapy. And then obviously in those patients who don't achieve a pathologic complete response, the expectation would be that they would go on to receive nivolumab per CheckMate 577. Again, the thought is that these tumors are more sensitive to immunotherapy given their higher incidences of mutational changes. And so again, this kind of goes along with the positive results seen in the SCIENCE trial that we just discussed with sintilimab but also EFFECT-neo with pembrolizumab. Obviously, we await the results of Jennifer's trial. Dr. Shaalan Beg: And the last abstract I was hoping we could get your perspective on was Abstract 652, which is a Phase 3 study of everolimus plus lanreotide versus everolimus monotherapy for unresectable or recurrent gastroenteropancreatic neuroendocrine tumors, the STARTER-NET trial. What were the results of this study? Dr. David Wang: So, I just want to give a shout out because we did have a session at this year's GI ASCO that looked at more rare tumors. So appendiceal tumors, neuroendocrine tumors, those kinds of things. So again, I would encourage your listeners to listen to that session if they have interest in that. Another type of rare tumor was adenosquamous tumors.  But in terms of the STARTER-NET trial, this was again an interim analysis of his phase 3trial and it was looking at combining everolimus plus lanreotide versus everolimus. So we know that in pancreatic-gastric neuroendocrine tumors, if you have low Ki-67, a well differentiated tumor, that the standard of care really is a somatostatin analog, and sometimes if they're more aggressive, we kind of consider molecular targeted therapy with everolimus. This was asking the question of whether we should do the combination on the frontline. And what was interesting is in this study, the patients were actually more of a poor prognostic set. So they had Ki-67 up to 20% or these were patients that actually had multiple liver lesions. And what they found was a median for progression free survival was improved with a combination out to 29.7 months versus 11.5 months with the somatostatin analog alone, and that the overall response rate was 23% versus 8.3%, again, favoring the combination. If you looked at subgroup analysis, it was actually those patients who had Ki-67 greater than 10%, so the more aggressive tumors, or those with diffuse liver lesions that had the most benefit. So I think that would be the patient population I would consider this new combination with using would be those patients again with poorer prognosis neuroendocrine tumor phenotype. Dr. Shaalan Beg: Thank you very much, Dr. Wang, for sharing your insights with us today and your great work to build a robust GI Cancers Symposium this year. Dr. David Wang: Well, thank you. I mean that really is a cooperative effort. We appreciate all the members of the GI25 Program Committee as well as the ASCO staff that just made it an outstanding meeting. Dr. Shaalan Beg: And thank you to all our listeners for your time today. You'll find links to the abstracts discussed today on the transcript of this episode.  Finally, if you value the insights that you hear on the ASCO Daily News Podcast, please take a moment to rate, review and subscribe wherever you get your podcasts. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions.  Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity or therapy should not be construed as an ASCO endorsement. Find out more about today’s speakers:  Dr. Shaalan Beg @ShaalanBeg  Dr. David Wang Follow ASCO on social media:   @ASCO on Twitter  @ASCO on BlueSky ASCO on Facebook   ASCO on LinkedIn   Disclosures:  Dr. Shaalan Beg:  Employment: Science 37  Consulting or Advisory Role: Ipsen, Array BioPharma, AstraZeneca/MedImmune, Cancer Commons, Legend Biotech, Foundation Medicine  Research Funding (Inst.): Bristol-Myers Squibb, AstraZeneca/MedImmune, Merck Serono, Five Prime Therapeutics, MedImmune, Genentech, Immunesensor, Tolero Pharmaceuticals  Dr. David Wang: Honoraria:  Novartis Consulting or Advisory Role: Novartis, Cardinal Health, Bristol-Myers Squibb, BeiGene, Eisai  
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  • Advances in Adjuvant Therapy for High-Risk Early Breast Cancer With Germline Mutations
    Dr. Jasmine Sukumar and Dr. Dionisia Quiroga discuss advances in adjuvant therapy for patients with early breast cancer and BRCA1/2 mutations, including how to identify patients who should receive genetic testing and the significant survival benefits of olaparib that emerged from the OlympiA trial. TRANSCRIPT Dr. Jasmine Sukumar: Hello, I'm Dr. Jasmine Sukumar, your guest host of the ASCO Daily News Podcast today. I'm an assistant professor and breast medical oncologist at the University of Texas MD Anderson Cancer Center. On today's episode, we'll be exploring advances in adjuvant therapy for high-risk early breast cancer in people with BRCA1/2 germline mutations. Joining me for this discussion is Dr. Dionisa Quiroga, an assistant professor and breast medical oncologist at the Ohio State University Comprehensive Cancer Center.  Our full disclosures are available in the transcript of this episode.  Dr. Quiroga, it's great to have you on the podcast. Thanks for being here. Dr. Dionisia Quiroga: Thank you. Looking forward to discussing this important topic. Dr. Jasmine Sukumar: Let's start by going over who should be tested for BRCA1/2 genetic mutations. How do you identify patients with breast cancer in your clinic who should be offered BRCA1/2 genetic testing? Dr. Dionisia Quiroga: So, guidelines on who to offer testing to somewhat differ between organizations at this point. I would say, generally, I do follow our current ASCO-Society of Surgical Oncology (SSO) Guidelines, though. Those guidelines recommend that BRCA1/2 mutation testing be offered to all patients who are diagnosed with breast cancer and are 65 years old or younger. For those that are older than 65 years old, there are additional factors to really take into account to decide on who to recommend testing for. Some of this has to do with personal and family history as well as ancestry. The NCCN also has their own specific guidelines for who to offer testing to. For example, people assigned male at birth; those who are found to have a second breast primary; those who are diagnosed at a young age; and those with significant family history should also be offered BRCA1/2 testing.  I think, very important for our discussion today, ASCO and SSO also made a very important point that all patients who may be eligible for PARP inhibitor therapy should be offered testing. So clearly this includes a large amount of our patient population. In my practice, we often refer to our Cancer Genetics Program. We're fortunate to have many experienced genetic counselors who can complete pre-test and post-test counseling with our patients. However, in settings where this may not be accessible to patients, it can also be appropriate for oncology providers to order the testing and ideally perform some of this counseling as well. Dr. Jasmine Sukumar: Thank you Dr. Quiroga. Let's next review where we are in current clinical practice guidelines. What current options do we have for adjuvant therapy specific to people with high-risk early breast cancer and BRCA1/2 genetic mutations? Dr. Dionisia Quiroga: Our current guidelines recommend adjuvant olaparib for one year for individuals with HER2-negative high risk breast cancer. This approval largely came from the data and the results of the OlympiA trial. This was a prospective phase 3, double blind, randomized clinical trial. It enrolled patients who had been diagnosed with HER2-negative early-stage breast cancer who also carried germline pathogenic or likely pathogenic variants of either the BRCA1 and/or BRCA2 genes. The disease also had to be considered high-risk and there were several criteria that had to be evaluated to deem whether or not these patients were high-risk. For example, those who are treated with neoadjuvant chemotherapy, if they had disease that was triple-negative, they needed to have some level of invasive residual disease at time of surgery. Alternatively, if the disease was hormone receptor-positive, they needed to have residual disease and a calculated CPS + EG score of 3 or higher. This scoring system is something that estimates relapse probability on the basis of clinical and pathologic stage, ER status, and histologic grade, and this will give you a score ranging from 0 to 6. In general, the higher the score, the worse the prognosis. This calculator though is available to the public online to allow providers to calculate this risk.  For the subset of patients who received adjuvant chemotherapy, for them to qualify for the OlympiA trial, if they had triple-negative disease, they needed to have a tumor of at least 2 cm or greater and/or have positive lymph nodes for disease. For hormone receptor-positive disease that was treated with adjuvant chemotherapy, they were required to have four or more pathologically confirmed positive lymph nodes at time of surgery. From this specified pool, patients were then randomized 1:1 to get either adjuvant olaparib starting at 300 mg twice a day or a matching placebo twice a day after they had completed surgery, chemotherapy and radiation treatment if needed. Dr. Jasmine Sukumar: And what were the outcomes of this study? Dr. Dionisia Quiroga: The study ended up enrolling over 1,800 patients and from these 1,800 patients, 70% had a BRCA1 mutation while 30% had a BRCA2 mutation. About 80% of the patients had triple-negative disease compared to hormone receptor-positive disease. Interestingly, about half of all patients enrolled had received neoadjuvant chemotherapy while the other half received adjuvant chemotherapy.  Looking at the outcomes, this was overall a very positive study. We actually now have outcomes data from a median of about 6 years out. This was just reported in December at the 2024 San Antonio Breast Cancer Symposium. There was found to be a 9.4% absolute difference in six-year invasive disease-free survival favoring the olaparib arm over the placebo arm. What was also interesting is that this was consistent across multiple subgroups of patients and the benefit was really seen whether or not they had hormone receptor-positive or triple-negative disease. The absolute difference in distant disease-free survival was also high at 7.8% and additionally favored olaparib. Most importantly, there was found to be a significant overall survival benefit. The six-year overall survival was 87.5% in the olaparib group compared to 83.2% in the placebo group. This translates to about a 4.4% difference and a relative 28% overall survival benefit in using olaparib.  Now, future follow up is going to be very important. Follow up for this study is actually planned to continue out until June 2029 so we can continue to observe if these survival curves will continue to branch apart as they have so far at each follow up. And I think this is especially important for those patients diagnosed with hormone receptor-positive cancers because we know those patients are at particular risk for later recurrences.  As an additional side note, the researchers also noted that there were fewer primary malignancies in the olaparib group, not just of the breast but also primary ovarian or fallopian tube cancers as well, which is not completely surprising knowing that this drug is also heavily used and beneficial in different types of gynecologic cancers. Ultimately, the amount of adverse events reported have been low with only about 9.9% of patients receiving olaparib needing to discontinue drug due to adverse events, and this is compared to 4.2% reported in the placebo group. Dr. Jasmine Sukumar: You mentioned that the OlympiA trial showed an overall survival benefit, but interestingly the OlympiAD trial looking at olaparib versus chemotherapy in patients with advanced metastatic HER2-negative breast cancer did not show a significant overall survival benefit. Could you discuss those differences? Dr. Dionisia Quiroga: I agree, that's a very good point. So OlympiA’s comparator arm was, of course, a placebo. So while this isn't the same as comparing to chemotherapy, it does still potentially suggest that there is a degree of benefit that olaparib can provide when it's introduced in the early local disease setting compared to advanced metastatic disease. I think we need more future trials looking at potential other combinations to see if we can improve the efficacy of PARP inhibitors in the metastatic setting. Dr. Jasmine Sukumar: For patients who do choose to proceed with use of adjuvant olaparib due to the promising efficacy, what side effects should oncologists counsel their patients about? Dr. Dionisia Quiroga: The most common notable side effects, I would say with olaparib and other PARP inhibitors are really cytopenias. Gastrointestinal side effects such as nausea and vomiting can occur as well as fatigue. There are some less common but potentially more serious side effects that we should counsel our patients on. This includes pneumonitis. So counseling patients on if they're short of breath or experiencing cough to let their provider know. Venous thromboembolism can also be increased rates of occurrence. And then of course myelodysplastic syndromes or acute myeloid leukemia is something that we often are concerned about. That being said, I think it should be noted that interestingly in the OlympiA trial so far, there have been less new cases of MDS and AML in the olaparib group than actually what's been reported in the placebo group at this median follow up of over six years out. So we'll need to continue to monitor this endpoint over time, but I do think this provides some reassurance. Dr. Jasmine Sukumar: Since the initiation of the OlympiA trial, other adjuvant treatments have also been studied and FDA approved for non-metastatic HER2-negative breast cancer. So for example, the CREATE-X trial established adjuvant capecitabine as an FDA approved treatment option in patients with triple-negative breast cancer who had residual disease following neoadjuvant chemotherapy. So if a patient with triple-negative breast cancer with residual disease is eligible for both adjuvant olaparib and adjuvant capecitabine treatments, how do you decide amongst the two? Dr. Dionisia Quiroga: If a patient's eligible for both, I honestly often favor olaparib, and I do this because I find the data for adjuvant olaparib a little bit more compelling. There are also differences in toxicity profile and treatment duration between the two that I think we should discuss with patients. For example, olaparib is supposed to be taken for a year total, whereas with capecitabine we typically treat for six to eight cycles with each cycle taking three weeks. There are some who may also sequence the two drugs in very high-risk disease. However, this is very much a data free zone. We don't have any current clinical trials really comparing these two or if sequencing of these agents is appropriate. So I don't currently do this in my own clinical practice. Dr. Jasmine Sukumar: Nowadays, almost all patients with stage 2 to 3 triple-negative breast cancer will be offered neoadjuvant chemotherapy plus immune checkpoint inhibitor therapy pembrolizumab per our KEYNOTE-522 trial data. With our current approach, pembrolizumab is continued into the adjuvant setting regardless of surgical outcome, so that patients receive a year total of immunotherapy. So in patients with residual disease and a BRCA germline mutation, do you suggest using adjuvant olaparib concurrently with pembrolizumab? Do we have any data to support that approach? Dr. Dionisia Quiroga: I do. I do use them concurrently. If a patient is eligible for adjuvant olaparib, I would use it the same way as if they were not on pembrolizumab. That being said, there are no large studies currently that have shown what the benefit or the toxicity of pembrolizumab plus olaparib are for early-stage disease. However, we do have some safety data of this combinatorial approach from other studies. For example, the phase 2/3 KEYLYNK-009 study showed that patients with advanced metastatic triple-negative breast cancer who were receiving concurrent pembrolizumab and olaparib had a manageable safety profile, particularly as the toxicities of these drugs alone don't tend to overlap. Dr. Jasmine Sukumar: And what about endocrine therapy for those that also have hormone receptor-positive disease? Dr. Dionisia Quiroga: Adjuvant endocrine therapy should definitely be continued while patients are on olaparib if they're hormone receptor-positive. An important component of this will also likely be ovarian suppression, which should include recommendation of risk reducing bilateral salpingo oophorectomy due to the risk of ovarian cancer development in patients who carry BRCA1/2 gene mutations. In most cases, this should happen at age 40 or before for those that carry a BRCA1 mutation, and at age 45 or prior for those with BRCA2 mutations. Dr. Jasmine Sukumar: And do you also consider adjuvant bisphosphonates in this context? Dr. Dionisia Quiroga: Yes. Like adjuvant endocrine therapy, adjuvant bisphosphonates were also instructed to be given according to standard guidelines in the OlympiA trial, so I would recommend use of bisphosphonates when indicated. You can refer to the ASCO Ontario Health Guidelines on Adjuvant Bone-Modifying Therapy Breast Cancer to guide that decision in order to utilize this due to multiple clinical benefits. It doesn't just help in terms of adjuvant breast cancer treatment but also reduction of fracture rate and down the line, improved breast cancer mortality.  Dr. Jasmine Sukumar: Particularly in hormone receptor-positive breast cancer, another adjuvant therapy option that was not available when the OlympiA trial started are the CDK4/6 inhibitors, ribociclib and abemaciclib, based on the NATALEE and monarchE studies. So how do you consider the use of these adjuvant therapy drugs in the context of olaparib and BRCA mutations? Dr. Dionisia Quiroga: Yeah, so we are definitely in a data-free zone here. And that's in part because the NATALEE and the monarchE studies are still ongoing and reporting data out at the same time that we're getting updated OlympiA data. So unlike some of our other adjuvant treatments that we discussed, where olaparib could be safely given concurrently, the risk of myelosuppression and using both a CDK4/6 inhibitor and a PARP inhibitor at the same time would be too high. In some cases, even if a patient has a BRCA1/2 mutation, they may not meet that specified inclusion criteria that OlympiA set for what they consider to be high-risk disease. And we know from the NATALEE and the monarchE trial there are also different markers that they use to denote high-risk disease. So it's possible, for example, in the NATALEE trial that looks specifically at adjuvant ribociclib, they included a much larger pool of hormone receptor-positive early-stage breast cancers, including a subset that did not have positive axillary lymph nodes.  In cases where patients would qualify for both olaparib and a CDK4/6 inhibitor, I think this is worth a nuanced discussion with our patients about the potential benefits, risks and administration of these drugs. I think another point to bring up is the cost associated with these drugs and the length of time patients will be on for, because financial toxicity is always something that we should bring up with patients as well. When sequencing these in high-risk disease, my practice is to generally favor olaparib first due to the overall survival data. There is also some data to support that patients with BRCA1/2 germline mutations may not respond quite as well to CDK4/6 inhibitors compared to those without. But again, this is still outside of the purview of current guidelines. Fortunately, we have more potential choices for patients, and that's a good thing, but shared decision making also needs to be key. Dr. Jasmine Sukumar: And while our focus today is on adjuvant treatment for people who carry germline BRCA mutations, what about other related gene mutations such as PALB2 pathogenic variant? Dr. Dionisia Quiroga: That's a great question. Clinical trials in the advanced metastatic setting have shown that there is efficacy of olaparib in the setting for PALB2 mutations. This is largely based on the TBCRC 048 phase 2 trial and that provided a Category 2B NCCN recommendation for patients with these PALB2 gene mutations. However, we're really still lacking enough clinical data for use in early-stage disease, so I don't currently use adjuvant olaparib in this case. I am definitely eager for more data in this area as the efficacy of PARP inhibitors in PALB2 gene mutations is very compelling. I think also, in the same line, there's been some data for somatic BRCA1/2 mutations in the metastatic setting, but we still have a lack of data for the early stage setting here as well. Dr. Jasmine Sukumar: Thank you Dr. Quiroga, for sharing your valuable insights with us today on the ASCO Daily News Podcast. Dr. Dionisia Quiroga: Thank you, Dr. Sukumar. Dr. Jasmine Sukumar: And thank you to our listeners for your time today. You'll find links to the studies discussed today in the transcript of this episode. Finally, if you value the insights that you hear on the ASCO Daily News Podcast, please take a moment to rate, review and subscribe wherever you get your podcasts. Thank you. Disclaimer: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. Follow today’s speakers:   Dr. Dionisa Quiroga @quirogad @quirogad.bsky.social Dr. Jasmine Sukumar @JasmineSukumar  @jasmine.sukumar.bsky.social Follow ASCO on social media:  @ASCO on X   @ASCO on Bluesky    ASCO on Facebook    ASCO on LinkedIn    Disclosures: Dr. Dionisia Quiroga:  No relationships to disclose Dr. Jasmine Sukumar: Honoraria: Sanofi (Immediate Family Member)  
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