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28/08/2024

JCO PO Article Insights: Publication Trends in JCO Precision Oncology

In this JCO Precision Oncology Article Insights episode, Miki Horiguchi summarizes an editorial: "Expanding the Reach of Personalized Medicine in Cancer Care: Current Progress and Future Directions of JCO Precision Oncology" by Dr. Yushu Shi et al. published on May 30, 2024. TRANSCRIPT Hello and welcome to JCO Precision Oncology Article Insights. I'm your host Miki Horiguchi, an ASCO Journals Editorial Fellow. Today, I will be providing a summary of the article titled "Expanding the Reach of Personalized Medicine in Cancer Care: Current Progress and Future Directions of JCO Precision Oncology". This is an editorial by Dr. Yushu Shi and colleagues that investigated trends in publication, peer review, and global influence of JCO precision oncology. Before getting into the editorial, I would like to briefly introduce to precision oncology and the JCO Precision Oncology journal as a leading platform for research in this field. Precision oncology is a personalized medicine approach that leverages advances in genomics and molecular profiling of tumors, biomarker-driven decisions, and targeted therapies to enhance clinical care for patients with various cancer types. Since there are many aspects to consider, such as biologic, clinical, and statistical aspects, advances in precision oncology also come with numerous challenges. These include identifying targetable mutations and addressing tumor heterogeneity and drug resistance. Other challenges are developing new study designs and statistical analysis methods to evaluate new approaches, as well as developing methods to manage large and complex datasets. Since the American Society of Clinical Oncology introduced the journal JCO Precision Oncology (or JCO PO) in 2016, it has played an important role as a dedicated platform for publishing high-quality research and promoting discussions on those challenges. JCO PO is a peer-reviewed, online-only, article-based journal publishing articles across multiple categories. These include original reports, case reports, review articles, commentaries, correspondence, editorials, special articles, and molecular tumor board case discussions. The journal's contribution to the advancement of the field is reflected in the journals' impact factor, which was 4.6 in 2022 and 5.3 in 2023. In the editorial, Dr. Shi and colleagues first investigated the publication trends from 2017 to 2022, highlighting cancer types, article types, the number of citations, and topics of papers published in JCO PO that have had broad impact. The papers accepted at JCO PO covered a broad range of research topics, including genomics-driven tumor treatments, molecularly selected targeted therapy, translational oncology, cancer biomarkers, gene expression and profiling, biostatistics and clinical trial methodology, epidemiology, and cancer prevention and control. The most common cancer types are thoracic, GI, and breast cancers. Original reports were more likely to be cited than case reports. The average number of annual citations for original reports was 4.33, while it was 1.39 for case reports. The authors listed the 10 most cited papers published in JCO PO in a table. The most cited paper was an original report titled "Landscape of Microsatellite Instability Across 39 Cancer Types" by Bonneville and colleagues. The paper has been cited more than 600 times since it was published in 2017. Next, the authors conducted an analysis to see trends in peer-review. When manuscripts are submitted to JCO PO, they go through a rigorous peer-review process. Reviewers evaluate them based on five key metrics: importance of the study, originality, quality of writing, relevance to clinical practice, and scientific strength. Each metric is rated on a scale from 1 to 5, with higher scores indicating better performance. Dr. Shi and colleagues compared the rating scores between accepted and rejected manuscripts of original reports and case reports. They found that the median score of accepted manuscripts was above 3.5 for all metrics. The findings highlight that no single metric determines acceptance, underscoring the importance of excelling in all five areas when developing manuscripts. Finally, the authors looked at trends in global influence in JCO PO. Counting the country where the corresponding author's institution is located, Dr. Shi and colleagues found that JCO PO has accepted manuscripts from 36 countries, indicating a steady increase in its global reach. The United States accounts for about 71% of the total contributors. The other top contributors include France, Canada, Italy, Australia, the Netherlands, Germany, Japan, the United Kingdom and China. Notably, global collaborations among authors have significantly increased, with the proportion of papers from multiple countries more than doubling from 12.5% in 2016 to 26.5% in 2022. These facts reflect JCO PO's ongoing commitment to engaging with the international precision oncology community and encouraging global research submissions. At the end of the editorial, the authors provided some guidance for future authors. Across original reports and case reports, successful submissions to JCO PO typically have a translational focus. They provided a mechanistic understanding of tumor biology and utilized cancer genomics to inform clinical decision making. The authors also highlighted several underrepresented but growing areas of interest at JCO PO. These include pediatric oncology, sarcomas, ethics, trial methodology, informatics, computational approaches, and statistical methods related to precision oncology. Furthermore, the increasing significance of germline genetics, pharmacogenetics, molecular diagnostics, and molecular epidemiology in precision oncology has been recognized and valued by JCO PO. JCO PO also has special series issues. The special series feature timely research topics, such as Equity in Precision Medicine, Statistical Methods for Precision Oncology, and Next Generation Sequencing. Through these special series, JCO PO continues to lead the advancement of the application of precision oncology across a diverse patient population. The authors also provided points to consider when submitting case reports. For successful case report submissions, especially n-of-1 reports that showcase novel findings with potential clinical impact, it is crucial to include robust data to support the clinical observations, investigate underlying mechanisms, and ensure proper protection of patients' identity and autonomy. An n-of-1 report alone is often insufficient for publication. Successful case reports typically extend beyond a single patient, examining the phenomenon in multiple patients and providing mechanistic validation, either in vitro or through preclinical models. Thank you for listening to JCO Precision Oncology Article Insights and please tune in for the next topic. Don't forget to give us a rating or review and be sure to subscribe, so you never miss an episode. You can find all ASCO shows at asco.org/podcasts.

28/08/2024

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11 min
11/01/2024

Germline EGFR Mutations and Familial Lung Cancer

Dr. Shannon Westin and her guests, Dr. Judy Garber and Dr. Geoffrey Oxnard, discuss the paper "Germline EGFR Mutations and Familial Lung Cancer" recently published in the JCO. TRANCRIPT The guest on this podcast episode has no disclosures to declare. Shannon Westin: Hello, and welcome to JCO After Hours, the podcast where we get in-depth on articles that are published in the Journal of Clinical Oncology. I am your host, Shannon Westin, Social Media Editor for the JCO and Gynecologic Oncologist by trade. And it is my great pleasure to speak today with you about an amazing manuscript entitled, "Germline EGFR Mutations and Familial Lung Cancer." It was published in the JCO on August 14, 2023. The authors have no conflicts of interest, and they are Dr. Geoffrey Oxnard, he's a Thoracic Oncologist and Associate Professor, Hematology and Medical Oncology at Boston Medical Center. Welcome, Geoff. Dr. Geoffrey Oxnard: Hi, Shannon. Thanks. Shannon Westin: And Dr. Judy Garber, the chief of the Division of Cancer Genetics and prevention at the Dana-Farber Cancer institute in Boston. Welcome, Judy. Dr. Judy Garber: Thank you. Hi, Shannon. Hi, Geoff. Shannon Westin: So excited you both could be here. Let's get started. So first I just want to levelset for our audience. Can you speak just a little briefly about the incidence and mortality of lung cancer and how that's been changing over time? Dr. Geoffrey Oxnard: Sure. Lung cancer is common and it's deadly, more than 200,000 cases a year in the United States, more than 100,000 deaths a year in the United States. But I think importantly, it's evolving. Its biology is evolving as smoking incidence goes down. We've identified these genomic subtypes of lung cancer that are sort of increasingly apparent and important as we think about its treatment. Outcomes are changing with emerging therapies, presentation is changing with lung cancer screening and with a growing ability to now find cancers early and prevent them. And so it's in that setting of a very dynamic disease that we chose to study a really unique little slice of it, which is germline risk. Shannon Westin: So let's take that one step further because I think that's really interesting. You mentioned the genomic aberrations and kind of how you're using that to target. Can you expand upon that a little bit more for me? Dr. Geoffrey Oxnard: Lung cancer that I've long studied is different than breast cancer when Judy has long studied because we think about its somatic alterations, we've always thought about KRAS mutations, EGFR mutations, and smaller and smaller splice limit. ALK, RAS, RET HER2, etc. And so tumor testing in lung cancer has one of the first to be standard across on solid tumor oncology. And the germline genetics was kind of an afterthought and is the flip, I think, of how genetic testing evolved in the breast cancer space for example. Dr. Judy Garber: I might argue a little bit if breast cancer was earlier and it was subtyped some molecularly it doesn't have as many molecular subtypes yet perhaps as lung cancer. But we've all been studying the somatic space to look for targets for therapy. And the germline space, certainly in breast cancer, came much earlier. And everybody knows about BRCA1 and 2. Now, we hope everybody knows about Lynch Syndrome, but certainly not everybody's thinking about inherited lung cancer risk. Dr. Geoffrey Oxnard: Yeah, these have converged. I think 10 years ago when this kicked off, I felt like a super outlier for thinking about, wait a second, what about the genetics behind all this that is leading to this strange variable presentation of lung cancer? For example, we know that in Asian populations, one type of lung cancer, EGFR mutant lung cancer, is more common. There must be some geneticness that leads to that. What explains the sort of pattern of presentation of these genetic subtypes in the populations we see in the US, that's pretty unclear? Dr. Judy Garber: So, I think, Shannon one of the clues about all this came from the fact that the EGFR mutations were being identified in the tumors. And then I really should let Geoff tell this story, but as the amateur thoracic person in the room here, to me, it was so interesting that there were the EGFR mutations, then there was treatment exploiting EGFR mutations, and the most common resistance mutation was this T790M variant. But when labs started testing EGFR, there was a small group of people who had that resistance variant without ever having been treated at all. So that was the obvious question, what was it doing there? And that's where Geoffrey came in. Dr. Geoffrey Oxnard: Yeah, this is a patient I met more than a decade ago at my fellowship in MSKCC. She'd been living with a T790M mutation in her tumor for years and years and years. I was like, "Well, I don't understand. Why is this sitting there?" And she had this sort of slightly mysterious history of lung cancer in her family. And we realized, wait a second, this T790M was behind her cancer from the beginning, and in fact, might have been the basis of why she developed lung cancer. And so that actually motivated a career development award I submitted to the Conquer Cancer Foundation of ASCO, a grant I received, and that then led to a program that I led at Dana-Farber under Judy's mentorship, where over the past decade, we sort of focused in and studied this strange, rare syndrome, really to dig into inheritedness as a kind of different flavor of lung cancer genetics. Dr. Judy Garber: Well, and now it's really a good time to think about this because we're recognizing there are younger cancers, colon cancer, like an epidemic, and lung cancers, and we're not sure how many of them are genetic or come from other exposures. Geoff talked about the differences in Asia, some of which are certainly genetic, some which may be environmental, especially in the lung, where that's such an issue. But trying to sort these things out, you have to be willing to think a little bit differently. And that was fun when Geoff came from the lung program, interested in the germline, we said, "Oh, we have to do this." Shannon Westin: Well, let's talk about what you did. I would love to hear and I know the audience would as well about the design of this study, so called INHERIT study. Very good name. I love a good name. This is a good one. Dr. Geoffrey Oxnard: Yeah. So that stands for Investigating Hereditary Risk of T790M, INHERIT. I forget where we coined that. Let me give you a case example. A patient presents in his 40s. I remember this man. He has an EGFR mutation in his tumor. He has a T790M in his tumor as well. He had routine tumor testing that lung cancer patients were getting. And he says, "Oh, also, my brother had lung cancer in his 40s just a couple of years ago. He was a smoker, though. He never had genetic testing." And so this patient we test on the study, we hypothesized that when patients present with T790M at diagnosis, that it would be a representation of an underlying germline EGFR mutation. Our hypothesis was that about 50% of the time T790M at diagnosis would be explained by a germline behind the doll. And that that could then empower families like this one to understand the kinds of lung cancer they're getting in their family, the kinds of treatment they should be getting, and the kinds of testing they should be getting to look for lung cancer at risk early on. It really saddens me that in a family that doesn't know about this condition, the brother would never get testing and would never think that I might be getting or might never get testing, might not be disposed to getting testing, and might not realize there's a therapy available to target that EGFR mutation if he died young without even much treatment. But this individual, we tested his lung cancer, we found him a therapy, we put him on a pill therapy that could last a very long time. And so we set up a program with a consortium alchemy, the Addario Lung Cancer Medical Institute, where we enrolled at three sites, both at Dana-Farber in Boston, Vanderbilt, and Ohio State, with some motivated investigators there that we appreciate their collaboration. But also, again, this is now more than 10 years ago, set up shop where people could enroll remotely, that if you found a T790M in your tumor, for whatever reason, you could reach out to the team at Dana-Farber centrally and get consented online and even get counseling. And this is one of the early ways of getting this remote participation. And you can imagine, over the course of the study, we quickly ran out of individuals at any given site, but that remote enrollment accelerated and really allowed us to get to the large population of remote study. Dr. Judy Garber: We were lucky that things were happening. The things you don't expect. So EGFR testing was not routine at that time. And the EGFR testing that had developed in Dana-Farber and NGH became standard of care at Dana-Farber so we were finding those patients, and then grew outside as well, at institutions and testing labs. And these people would somehow emerge so we were very lucky that we were able to set up remote testing. We could send and get a saliva sample and be able to test. Or these were people who got tested through their own doctors, found out they had this mutation and then went online and said, "Who knows anything about this?" I would say that we and our amazing genetic counselors who spoke to all these patients, took their detailed family histories, got their other information, and were able then to really build out these cohorts so we can understand them. And to look at, for example, Geoff's question, it was really his question, "Why did we have such clusters in certain parts of the country? Could it be that there were the so-called founder mutations that somebody had this mutation and they spread their genes around so that they're

11/01/2024

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18 min
10/06/2025

A Whipple of Choice: Choosing Between Debilitating Surgery or Watchful Waiting

Listen to ASCO's Journal of Clinical Oncology Art of Oncology article, "A Whipple of Choice" by Dr. Carl Forsberg, who is an Assistant Professor of Strategy and History at Air Force War College. The article is followed by an interview with Forsberg and host Dr. Mikkael Sekeres. Dr Forsberg shares his experience with an uncommon cancer treated by a new therapy for which no directly relevant data were available. Transcript Narrator: A Whipple of Choice, by C. W. Forsberg, PDH I sat across from a hepatobiliary surgeon on a gray October afternoon. "To be frank," he told me, "we don't know what to recommend in your case. So we default to being conservative. That means a Whipple surgery, even though there are no data showing it will improve your outcome." The assessment surprised me, diverging from my expectation that doctors provide clear recommendations. Yet the surgeon's willingness to structure our conversation around the ambiguity of the case was immensely clarifying. With a few words he cut through the frustrations that had characterized previous discussions with other physicians. I grasped that with an uncommon cancer treated by a novel therapy with no directly relevant data, I faced a radical choice. My situation that afternoon was worlds away from where I was 5 months earlier, when I was diagnosed with presumed pancreatic cancer at the age of 35. An early scan was suspicious for peritoneal metastasis. The implications seemed obvious. I prepared myself for the inevitable, facing my fate stoically except in those moments when I lingered next to my young son and daughter as they drifted to sleep. Contemplating my death when they were still so vulnerable, I wept. Then the specter of death retreated. Further tests revealed no metastasis. New doctors believed the tumor was duodenal and not pancreatic. More importantly, the tumor tested as deficient mismatch repair (dMMR), predictable in a Lynch syndrome carrier like me. In the 7 years since I was treated for an earlier colon cancer, immune checkpoint inhibitor (ICI) immunotherapy had revolutionized treatment of dMMR and high microsatellite instability tumors. One oncologist walked me through a series of recent studies that showed extraordinary responses to ICI therapy in locally advanced colon and rectal tumors with these biomarkers.1-4 He expressed optimism that my cancer could have a similar response. I embarked on a 24-week course of nivolumab and ipilimumab. After 6 weeks of therapy, a computed tomography (CT) scan showed a significant reduction in tumor size. My health rebounded as the tumor receded. This miraculous escape, however, was bound by the specter of a Whipple surgery, vaguely promised 6 months into my treatment. At the internationally renowned center where I was diagnosed and began treatment with astonishing efficiency, neither oncologists nor surgeons entertained the possibility of a surgery-sparing approach. "In a young, healthy patient like you we would absolutely recommend a Whipple," my first oncologist told me. A second oncologist repeated that assessment. When asked if immunotherapy could provide a definitive cure, he replied that "if the tumor disappeared we could have that conversation." My charismatic surgeon exuded confidence that I would sail through the procedure: "You are in excellent health and fitness—it will be a delicious surgery for me." Momentum carried me forward in the belief that surgery was out of my hands. Four months into treatment, I was jolted into the realization that a Whipple was a choice. I transferred my infusions to a cancer center nearer my home, where I saw a third oncologist, who was nearly my age. On a sunny afternoon, 2 months into our relationship, he suggested I think about a watch-and-wait approach that continued ICI therapy with the aim of avoiding surgery. "Is that an option?" I asked, taken aback. "This is a life-changing surgery," he responded. "You should consider it." He arranged a meeting for me with his colleague, the hepatobiliary surgeon who clarified that "there are no data showing that surgery will improve your outcome." How should patients and physicians make decisions in the absence of data? My previous experience with cancer offered little help. When I was diagnosed with colon cancer at the age of 28, doctors made clear recommendations based on clear evidence. I marched through surgery and never second-guessed my choices. A watch-and-wait approach made sense to me based on theory and extrapolation. Could duodenal tumors treated by ICIs behave that differently from colorectal cancers, for which data existed to make a watch-and-wait approach appear reasonable? The hepatobiliary surgeon at the regional cancer center told me, "I could make a theoretical argument either way and leave you walking out of here convinced. But we simply don't know." His comment reflects modern medicine's strict empiricism, but it foreclosed further discussion of the scientific questions involved and pushed the decision into the realm of personal values. Facing this dilemma, my family situation drove me toward surgery despite my intuition that immunotherapy could provide a definitive cure. The night before I scheduled my Whipple procedure, I wrote in my journal that "in the face of radical uncertainty one must resort to basic values—and my priority is to survive for my children. A maimed, weakened father is without doubt better than no father at all." To be sure, these last lines were written with some bravado. Only after the surgery did I viscerally grasp that the Whipple was a permanent maiming of the GI system. My doubts lingered after I scheduled surgery, and I had a final conversation with the young oncologist at the cancer center near my home. We discussed a watch-and-wait approach. A small mass remained on CT scans, but that was common even when tumors achieved a pathological complete response.5 Another positron emission tomography scan could provide more information but could not rule out the persistence of lingering cancer cells. I expressed my low risk tolerance given my personal circumstances. We sat across from one another, two fathers with young children. My oncologist was expecting his second child in a week. He was silent for moments before responding "I would recommend surgery in your situation." Perhaps I was projecting, but I felt the two of us were in the same situation: both wanting a watch-and-wait approach, both intuitively believing in it, but both held back by a sense of parental responsibility. My post-surgery pathology revealed a pathological complete response. CT scans and circulating tumor DNA tests in the past year have shown no evidence of disease. This is an exceptional outcome. Yet in the year since my Whipple, I have been sickened by my lack of gratitude for my good fortune, driven by a difficult recovery and a sense that my surgery had been superfluous. Following surgery, I faced complications of which I had been warned, such as a pancreatic fistula, delayed gastric emptying, and pancreatic enzyme insufficiency. There were still more problems that I did not anticipate, including, among others, stenoses of arteries and veins due to intraabdominal hematomas, persistent anemia, and the loss of 25% of my body weight. Collectively, they added up to an enduringly dysfunctional GI system and a lingering frailty. I was particularly embittered to have chosen surgery to mitigate the risk that my children would lose their father, only to find that surgery prevented me from being the robust father I once was. Of course, had I deferred surgery and seen the tumor grow inoperable or metastasize between scans, my remorse would have been incalculably deeper. But should medical decisions be based on contemplation of the most catastrophic consequences, whatever their likelihood? With hindsight, it became difficult not to re-examine the assumptions behind my decision. Too often, my dialogue with my doctors was impeded by the assumption that surgery was the obvious recommendation because I was young and healthy. The assumption that younger oncology patients necessarily warrant more radical treatment deserves reassessment. While younger patients have more years of life to lose from cancer, they also have more years to deal with the enduring medical, personal, and professional consequences of a life-changing surgery. It was not my youth that led me to choose surgery but my family situation: 10 years earlier, my youth likely would have led me to a watch-and-wait approach. The rising incidence of cancer among patients in their 20s and 30s highlights the need for a nuanced approach to this demographic. Calculations on surgery versus a watch-and-wait approach in cases like mine, where there are no data showing that surgery improves outcomes, also require doctors and patients to account holistically for the severity of the surgery involved. Multiple surgeons discussed the immediate postsurgical risks and complications of a pancreaticoduodenectomy, but not the long-term challenges involved. When asked to compare the difficulty of my prior subtotal colectomy with that of a pancreatoduodenectomy, the surgeon who performed my procedure suggested they might be similar. The surgeon at the regional cancer center stated that the Whipple would be far more difficult. I mentally split the difference. The later assessment was right, and mine was not a particularly bad recovery compared with others I know. Having been through both procedures, I would repeat the subtotal colectomy for a theoretical oncologic benefit but would accept some calculated risk to avoid a Whipple. Most Whipple survivors do not have the privilege of asking whether their surgery was necessary. Many celebrate every anniversary of the procedure as one more year that they are alive against the odds. That I can question the need for my surgery speaks to the revolutionary transformation which immunotherapy has brought about for a

10/06/2025

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30 min
30/09/2025

JCO PO Article Insights: A Retrospective Analysis to Identify ICI-Sensitive Populations

In this JCO Precision Oncology Article Insights episode, Dr. Jiasen He summarizes JCO PO article "Synthetic Lethal Co-Mutations in DNA Damage Response Pathways Predict Response to Immunotherapy in Pan-Cancer" by Hua Zhong et al. TRANSCRIPT Jiasen He: Hello and welcome to the JCO Precision Oncology Article Insights. I am your host, Jiasen He, and today we will be discussing the JCO Precision Oncology article, "Synthetic Lethal Co-mutations in DNA Damage Response Pathway Predict Response to Immunotherapy in Pan-Cancer" by Dr. Zhang and colleagues. Immunotherapy has emerged as a groundbreaking treatment option for many types of cancer. However, the overall response rate to immunotherapy is low, around 10% to 30%. This highlights the critical need to identify which patients are most likely to benefit from immunotherapy. Two of the most extensively studied biomarkers are PD-L1 expression and tumor mutation burden (TMB). High levels of PD-L1 and TMB have been associated with better response to immune checkpoint inhibitors, which are now widely used in clinical practice. The predictive value of these markers is inconsistent across all settings. Some tumors with high PD-L1 or TMB still respond poorly to immunotherapy. One reason is that TMB reflects new antigen production, but recent studies suggest that new antigen levels do not always correlate with tumor immunogenicity. Many new antigens are not effectively recognized by T cells, limiting the immune response. Emerging evidence indicates that mutations in the DNA damage response (DDR) pathway play a critical role in moderating tumor immune interactions. Tumors harboring DDR pathways frequently exhibit increased genome instability, which may enhance their sensitivity to immune checkpoint inhibitors. While all these pathways are under active investigation, the optimal DDR pathway biomarkers for patient selection remain unclear. Notably, tumor cells with a defect in one DDR pathway may acquire greater reliance on alternative DDR pathways. Recent studies suggest that synthetic lethal co-mutations within DDR pathways are associated with immune-inflamed or hot tumor microenvironments. Based on this rationale, Dr. Zhang is investigating if synthetic lethal co-mutations in DDR pathway response pathway can serve as a treatment biomarker for immune checkpoint inhibitors. To address this question, Dr. Zhang and colleagues first utilized SynLethDB 2.0, a comprehensive database that integrated multiple data sets. Synthetic lethal (SL) gene pairs in this resource are identified through both experimental and computational approaches, with confidence scores assigned to each pair. These SL pairs were then mapped to gene sequencing results from several clinical cohorts. SL co-mutation status was defined as positive when both genes in a synthetic lethal pair were mutated. From this, SL co-mutation pairs specifically involving DDR pathway genes were selected. Patients were classified as DDR co-mutation positive if both genes in a synthetic lethal pair, each belonging to the defined DDR pathways, were mutated. In total, 431 DDR-related SL pairs were identified and matched to sequencing data from clinical cohorts. Clinical information was extracted from the cBioPortal, while further analysis of immune infiltration was performed using DNA mutation and RNA expression data from The Cancer Genome Atlas (TCGA) pan-cancer data set. The author first examined the correlation between SL co-mutation status and response to ICI therapy. They discovered that patients with SL co-mutation showed significantly improved outcome to ICI therapy across various clinical cohorts. Notably, in patients who did not receive ICI treatment, patients with SL co-mutation showed markedly compromised overall survival. Further analysis focused on the predictive value of SL co-mutation within DDR pathway genes. The author found that patients with DDR SL co-mutation had a longer overall survival compared to those with mutations in a single DDR gene, implying that SL co-mutations may be more effective biomarkers within the DDR pathway. To explore this further, in the TMB-MSKCC cohort, the author found that patients with DDR co-mutation constituted approximately 20% of various cancer types, including non-small cell lung cancer, melanoma, and bladder cancer. These patients demonstrated significantly better survival outcomes and disease control rates when treated with ICIs compared to DDR co-mutation negative patients. Notably, the TMB level was substantially higher in patients with DDR co-mutation, a finding consistent with data from the Miao-lung cohort. Furthermore, in cohorts not treated with ICIs, patients with DDR co-mutation had a shorter overall survival compared to their counterparts. Upon stratifying by PD-L1 expression, the author observed that patients with DDR co-mutation who were also PD-L1 positive derived the greatest clinical benefit from ICI therapy. Upon analyzing the frequency of co-mutation within the DDR pathway, the authors found that patients with SL co-mutation in the CPF-CPF pathway experienced remarkable survival benefit from ICIs. Within this group, one of the most common co-mutation combinations was TP53-ATM, observed in approximately 45% of cases, which was associated with a better response to ICI therapy. Further analysis of immune cell infiltration revealed that patients with TP53-ATM co-mutation exhibited a distinct tumor immune microenvironment. As the authors stated, the study's main limitation lies in the nature of retrospective analysis, which lacked the control over confounding variables and was subject to non-random sampling. For instance, patients with both SL co-mutations and DDR SL co-mutations exhibited high TMB, and TMB was known to be associated with improved response to ICI therapy itself. So, these findings require validation through prospective studies, and immune infiltration analysis needs confirmation via laboratory experiments. In conclusion, the authors found that patients with SL co-mutations in DDR pathways showed favorable clinical response and prolonged survival following ICI therapy. They also identified TP53-ATM co-mutations as a clinically relevant biomarker for predicting ICI treatment response. Thank you for tuning in to JCO Precision Oncology Article Insights. Don't forget to subscribe and join us next time as we explore more groundbreaking research shaping the future of oncology. 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.

30/09/2025

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8 min
31/07/2025

What Is Precision Palliative Care? Rethinking a Care Delivery Problem

Dr. Joseph McCollom and Dr. Ramy Sedhom discuss precision palliative care, a new strategy that aims to align palliative care delivery with patient and caregiver needs instead of diagnosis alone. TRANSCRIPT ADN Podcast Episode 8-22 Transcript: What Is Precision Palliative Care? Rethinking a Care Delivery Problem Dr. Joseph McCollom: Hello and welcome to the ASCO Daily News Podcast. I'm your guest host, Dr. Joseph McCollom. I'm a GI medical oncologist and palliative oncologist at the Parkview Packnett Family Cancer Institute here in Fort Wayne, Indiana. So, the early benefits of palliative care for patients with cancer have been well documented, but there are challenges in terms of bandwidth to how do we provide this care, given the workforce shortages in the oncology field. So today, we'll be exploring a new opportunity known as precision palliative care, a strategy that aims to align care delivery with patient and caregiver needs and not just diagnosis alone. Joining me for this discussion is Dr. Ramy Sedhom. He is the medical director of oncology and palliative care at Penn Medicine Princeton Health and a clinical assistant professor of medicine at the University of Pennsylvania Perelman School of Medicine. Our full disclosures are available in the transcript of this episode. Dr. Sedhom, it's great to have you on the podcast today. Thank you so much for being here. Dr. Ramy Sedhom: Thank you, Joe. It's a pleasure to be here and lucky me to be in conversation with a colleague and friend. Yes, many of us have heard about the benefits of early palliative care. Trials have shown better quality of life, reduced symptoms, and potentially even improved survival. But as we know, the reality is translating that evidence into practice, which is really, really challenging. So Joe, both you and I know that not every patient can see palliative care, or I'd even argue should see palliative care, but that also means there are still many people with real needs who still fall through the cracks. That's why I'm really excited about today's topic, which we'll be discussing, which is precision palliative care. It's a growing shift in mindset from what's this patient's diagnosis or what's this patient's prognosis, to what matters most for this person in front of me right now and what are their individual care needs. I think, Joe, it's very exciting because the field is moving from a blanket approach to one tailored to meet people where they actually are. Dr. Joseph McCollom: Absolutely, Ramy. And I think from the early days when palliative care was kind of being introduced and trying to distinguish itself, I think one of the first models that came to clinicians' eyes was Jennifer Temel's paper in The New England Journal of Medicine in 2010. And her colleagues had really looked at early palliative care integration for patients with advanced non–small cell lung cancer. And in that era – this is a pre-immunotherapy era, very early targeted therapy era – the overall prognosis for those patients are similar to the population I serve as a GI medical oncologist, pancreatic cancer today. Typically, median overall survival of a year or less. And so, a lot of her colleagues really wanted her to track overall survival alongside quality of life and depression scores as a result of that. And it really was a landmark publication because not only did it show an improvement of quality of life, but it actually showed an improvement of overall survival. And that was really, I think, revolutionary at the time. You know, a lot of folks had talked about if this was a drug, the FDA would approve it. We all in GI oncology laugh about erlotinib, which got an FDA approval for a 2-week overall survival advantage. And so, it really kind of set the stage for a lot of us in early career who had a passion in the integration of palliative care and oncology. And I think a lot of the subsequent ASCO, NCCN, COC, Commission on Cancer, guidelines followed through with that. But I think what we realized is now we're kind of sitting center stage, there's still a lot of resource issues that if we sent a referral to palliative care for every single patient diagnosed with even an advanced cancer, we would have a significant workforce shortage issue. And so, Ramy, I was wondering if you could talk a little bit about how do we help center in on who are the right patients that are going to have the greatest benefit from a palliative care specialist intervention? Dr. Ramy Sedhom: Thanks, Joe. Great question. So you mentioned Dr. Temel's landmark 2010 trial published in the New England Journal of Medicine. And it is still a game changer in our field. The results of her work showed not only improved quality of life and mood, but I think very surprisingly at the time, a survival benefit for patients with lung cancer who had received early palliative care. That work, of course, has helped shape national guidelines, as you've shared, and it also helped define early, as within 8 weeks of diagnosis. But unfortunately, there remains a disconnect. So in clinical practice, using diagnosis or stage as the only referral trigger doesn't really match the needs that we see show up. And I think unfortunately, the other part is that approach creates a supply demand mismatch. We end up either referring more patients than palliative care teams can handle, or at the opposite extreme, we end up referring no one at all. So, I actually just wanted to quickly give, for example, two real world contrasts. So one center that I actually have friends who work in, tried as a very good quality improvement incentive, auto-refer all patients with stage IV pancreas cancer to palliative care teams. And while very well intentioned, they saw very quickly that in a two-month period, they had 30 new referrals. And on the palliative care side, there were only 15 available new patient slots. On the other hand, something that I often see in practice, is a situation where, for example, consider the case of a 90-year-old with a low-grade B-cell lymphoma. On paper, low-risk disease, but unfortunately, when you look under the microscope, this gentleman is isolated, has symptoms from his bulky adenopathy, and feels very overwhelmed by many competing illnesses. This is someone who, of course, may benefit from palliative care, but probably doesn't check the box. And I think this is where the model of precision palliative care steps in. It's not really about when was someone diagnosed or what is the prognosis or time-based criteria of their cancer, but it's really fundamentally asking the question of who needs help, what kind of help do they need, and how urgently do we need to provide this help? And I think precision palliative care really mirrors the logic and the philosophy of precision oncology. So just like we've made strides trying to match therapies to tumor biology, we also need to have the same attention and the same precision to match support to symptoms, to context of a patient situation and their caregiver, and also to their personal goals. So I think instead of a blanket referral, we really need to tailor care, the right support at the right moment for the right person to the right care teams. And I think to be more precise, there's really four core elements to allow us to do this well. So first, we really need to implement systematic screening. Let's use what we already have. Many of our centers have patient reported outcomes. The Commission on Cancer motivates us to use distress screening tools. And the EHR is there, but we do very little to flag and to surface unmet care needs. We have seen amazing work from people like Dr. Ethan Bash, who is the pioneer on patient-reported outcomes, and Dr. Ravi Parikh, who used to be my colleague at Penn, now at Emory, who show that you could use structured data and machine learning to identify some of these patient needs in real time. The second piece is after a systematic screening, we really need to build very clear referral pathways. One very good example is what the supportive care team at MD Anderson has done, of course, led by Dr. Eduardo Brera and Dr. David Huey, where they have, for example, designed condition-specific triggers. Urgent referrals, for example, to palliative care for severe symptoms, where they talk about it like a rapid response team. They will see them within 72 hours of the flag. But at the same time, if the unmet need is a caregiver distress, perhaps the social work referral is the first part of the palliative care intervention that needs to be placed. And I think this helps create both clarity and consistency but also it pays attention to that provider and availability demand mismatch. Third, I really think we need to triage smartly. As mentioned in the prior example, not every patient needs every team member of the palliative care team. Some benefit most from the behavioral health intervention. Others might benefit from chaplaincy or the clinician for symptom management. And I think aligning intensity with complexity helps us use our teams wisely. Unfortunately, the greatest barrier in all of our health care systems is time and time availability. And I think this is one strategic approach that I have not yet seen used very wisely. And fourth, I really think we need to embrace interdisciplinary care and change our healthcare systems to focus more on value. So this isn't about more consults or RVUs. I think it's really about leveraging our team strengths. Palliative care teams or supportive care teams usually are multidisciplinary in their core. They often have psychologists, social workers, sometimes they have nurse navigators. And I think all of these are really part of that engine of whole person care. But unfortunately, we still are not set up in care delivery systems that unfortunately to this day still model fee for service where the clinician or the physician visit is the only quote unquote real value add. Hop

31/07/2025

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28 min
30/05/2024

Therapy for Stage IV NSCLC With Driver Alterations: ASCO Living Guideline Update 2024.1

Dr. Jyoti Patel discusses the latest update to the stage IV NSCLC with driver alterations living guideline, specifically for patients with EGFR or ROS1 alterations. She shares the latest recommendations based on recently published evidence, such as the FLAURA2, MARIPOSA-2, and TRIDENT-1 trials. Dr. Patel talks about how to choose between these new options and the impact for patients living with stage IV NSCLC, as well as novel drugs the panel is monitoring for future guideline updates. Read the full living guideline update "Therapy for Stage IV Non-Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2024.1" at www.asco.org/living-guidelines. TRANSCRIPT This guideline, clinical tools, and resources are available at www.asco.org/living-guidelines. Read the full text of the guideline and review authors' disclosures of potential conflicts of interest in the Journal of Clinical Oncology, https://ascopubs.org/doi/10.1200/JCO.24.00762 Brittany Harvey: Hello and welcome to the ASCO Guidelines podcast, one of ASCO's podcasts delivering timely information to keep you up to date on the latest changes, challenges and advances in oncology. You can find all the shows, including this one at asco.org/podcasts. My name is Brittany Harvey, and today I'm interviewing Dr. Jyoti Patel from Northwestern University, co-chair on, "Therapy for Stage IV Non-Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2024.1." Thank you for being here today, Dr. Patel. Dr. Jyoti Patel: Thanks so much. Brittany Harvey: Then, before we discuss this guideline, I'd like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Patel, who has joined us here today, are available online with the publication of the guideline in the Journal of Clinical Oncology, which is linked in the show notes. So then to dive into the content of why we're here today, Dr. Patel, this living clinical practice guideline for systemic therapy for patients with stage four non-small cell lung cancer with driver alterations is being updated on a regular basis. So what prompted the update to the recommendations in this latest update? Dr. Jyoti Patel: This recent update, I think, absolutely reflects how quickly the science is changing. The landscape of treatment options for patients with advanced non-small cell lung cancer is evolving so rapidly, and guidelines from even six months ago don't address some of the newest approvals and newest data and the newest clinical scenarios that we're presented with when we see patients. I think it's harder because before there was usually a single answer, and now there are a number of scenarios, and we hope that the guideline addresses this. Brittany Harvey: Absolutely. The panel's had a lot of data to review as you keep this guideline up to date. So then this latest update addresses updates to both EGFR and ROS1 alterations. So starting with EGFR, what are the updated recommendations for patients with stage four non-small cell lung cancer and an EGFR exon 19 deletion or exon 21 L858R substitution? Dr. Jyoti Patel: So for patients with classical driver mutations in EGFR, our recommendation remains that patients should be offered osimertinib. We now also have data to support intensification of therapy with osimertinib and chemotherapy. The FLAURA2 trial was a global randomized study in which patients with classical mutations were assigned to receive either osimertinib or osimertinib with doublet chemotherapy. The trial showed that progression free survival was longer with osimertinib plus chemotherapy with a hazard ratio that was pretty profound, 0.62. In patients who had CNS metastasis as well as patients with L858R mutations, this benefit remained and was perhaps even greater. Now the study remains immature in terms of OS. What we can say is that chemotherapy adds toxicity, so the inconvenience of 13 weekly infusions, expected toxicities from chemotherapy of myelosuppression and fatigue. I think this- we'll continue to watch as the study matures to really see the OS benefit, but certainly intensification in the frontline setting is an option for patients. The other major update was for second and subsequent line therapy for these patients with EGFR mutations. Another important trial, a study called MARIPOSA-2, was published in the interim, and this was for patients who had received osimertinib in the frontline setting. Patients were randomized to one of three arms. The two arms that are most relevant for us to discuss are chemotherapy with amivantamab or chemotherapy alone. Chemotherapy with amivantamab was associated with an improvement in progression free survival with a hazard ratio of 0.48 as well as improvements in response rate with almost a doubling of response rate to the mid 60%. There was certainly an increase in AEs associated with amivantamab, primarily rash and lower extremity edema and importantly infusion reaction. Based on this data, though in the superior PFS and response rate, we've said that patients after osimertinib should be offered chemotherapy plus amivantamab. Patients may opt for chemotherapy alone because of the toxicity profile, but this recent update is reflective of that data. Brittany Harvey: Excellent. Thank you for reviewing those updated recommendations and the supporting evidence behind those recommendations. I think that's important to the nuance and the toxicity associated with these new recommendations as well. So then, following those recommendations, what are the updated recommendations for patients with stage four non-small cell lung cancer and a ROS1 rearrangement? Dr. Jyoti Patel: ROS1 fusions have been noted in a small but important subset of patients. We now reflect multiple new options for patients. Traditionally, crizotinib was the primary drug that was recommended, but we now have two very active drugs, repotrectinib, and entrectinib, that have both been FDA approved. Repotrectinib was approved based on a study called the TRIDENT-1 trial. In this study, patients who were treatment naive, who had not received a prior TKI, had a response rate of 79% and a long duration of response over 34 months. For patients who had received prior TKIs, so primarily crizotinib, the response rate was lower at 38%. But again, very clinically meaningful. Repotrectinib has known CNS activity, so it would be the favored drug over crizotinib, which doesn't have CNS penetration. The decision between entrectinib and repotrectinib is one, I think, based on toxicity. Repotrectinib can cause things like dizziness and hypotension. Entrectinib can cause weight gain, and also has CNS effects. Brittany Harvey: Appreciate you reviewing those recommendations as well. So then you've already talked a little bit about this in terms of deciding between some of the options. But in your view, what should clinicians know as they implement these new recommendations, and how do these new recommendations fit into the previous recommendations? Dr. Jyoti Patel: So there's an onslaught of new data, and certainly many of us want to remain at the front of our fields and prescribe the newest drug, our most effective drug, to all of our patients. But for the person living with cancer and in the practice of medicine, I think it's much more nuanced than that. For example, for a patient with an EGFR mutation exon deletion 19, the expectation is that osimertinib will have a deep and durable response. Certainly a patient will eventually have progression. I think the decision about intensification of therapy and chemotherapy on the onset really has to do with how much the patient is willing to deal with the inconvenience of ongoing chemotherapy, the uncertainty about what comes next after progression on chemotherapy. It may be, though, that a patient may very much fear progressive disease, and so that inconvenience is lessened because anxiety around feeling like they're doing everything for their cancer is diminished by intensification of therapy. Others who may have a large volume of disease or profoundly symptomatic, or who have L858R or brain metastasis it may make sense to give chemotherapy again, we're improving the time until progression significantly by combination therapy. Brittany Harvey: Definitely those nuances are important as we think about which options that patients should receive, along with shared decision making as well. So then what do these new options mean for patients with EGFR or ROS1 alterations? Dr. Jyoti Patel: It's fantastic for patients that there are multiple options. It's also really hard for patients that there are multiple options, because then again, we have to really clarify aims of therapy, identify what's really important in patient experience and the lived importance of treatment delivery and the burden of treatment delivery. Now more than ever, oncologists have to know what's new and exciting. But patients have to be willing to ask and participate in the shared decision making - understanding their cancer and understanding that their options are absolutely important. As patients start making their decisions, we have the data just in terms of trial outcomes. I think we're now trying to understand the burden of treatment for patients. And so that piece of communicating financial toxicity, long term cumulative lower grade toxicity is going to be more important than ever. Brittany Harvey: Absolutely. It's great to have these new options, and those elements of communication are key to ensuring that patients meet their goals of care. So then finally, as this is a living guideline, what ongoing research is the panel monitoring for future updates to these recommendations for patients with stage four non-smal

30/05/2024

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12 min
16/10/2024

Transcriptomic Profiling of Non-Localized Prostate Cancer

JCO PO author Dr. Amar U. Kishan, Professor, Executive Vice Chair, and Chief of Genitourinary Oncology Service in the Department of Radiation Oncology at the University of California, Los Angeles, shares insights into his JCO PO article, "Transcriptomic Profiling of Primary Prostate Cancers and Nonlocalized Disease on Prostate-Specific Membrane Antigen Positron Emission Tomography/Computed Tomography: A Multicenter Retrospective Study." Host Dr. Rafeh Naqash and Dr. Kishan discuss the relationship between Decipher genomic classifier scores and prostate-specific membrane antigen (PSMA) PET/CT-based metastatic spread. TRANSCRIPT Dr. Rafeh Naqash: Hello and welcome to JCO Precision Oncology Conversations, where we bring you engaging conversations with authors of clinically relevant and highly significant JCO articles. I'm your host, Dr. Rafeh Naqash, Assistant Professor at the OU Health Stephenson Cancer Center at the University of Oklahoma. Today we are joined by Dr. Amar Kishan, Executive Vice Chair of the Department of Radiation Oncology at the David Geffen School of Medicine at UCLA and UCLA Jonsson Comprehensive Cancer Center, and also the corresponding and senior author of the JCO Precision Oncology article entitled, "Transcriptomic Profiling of Primary Prostate Cancers and Non Localized Disease on Prostate-Specific Membrane Antigen (PSMA) Positron Emission Tomography/Computed Tomography: A Multicenter Retrospective Study." Dr. Kishan, welcome to our podcast and thank you for joining us today. Dr. Amar Kishan: Thank you so much for that kind introduction and the invitation to be here today. Dr. Rafeh Naqash: Well, it seems to me that there's a theme that people in the GU space, investigators in the GU space, are very interested in trying to understand risk predictors for prostate cancer. We had somebody, I believe from Huntsman Cancer Center a few months back on a previous podcast, where they were trying to do risk prediction modeling as well. Could you tell us why that's something that the GU community is very interested in? What's the background? Is it because there's no risk prediction approaches currently? And would this somehow influence management in the near future? Dr. Amar Kishan: Yeah, that's a great question. So, I think this goes back to the point that we're in the era of precision medicine now, and many cancers have these molecular stratification scores and all that. Prostate cancer has lagged a little bit behind in that regard, despite the fact that it's such a common cancer that affects so many people across the country and across the world. So, we do have risk stratification schemes for prostate cancer. These are based off clinical and pathologic variables, like the level of PSA, the size of the tumor on digital rectal examination, now, we're incorporating MRI imaging as well, and then what the cancer looks like under the microscope, the Gleason score. And now there have been revisions to the Gleason score, but it's really kind of the architecture, what the biopsy looks like. And this was kind of developed many, many years ago by Donald Gleason, a pathologist at the VA. What we're not necessarily taking into account routinely is kind of the biology of the cancer per se. You know, what are the molecular drivers? How could that influence ultimate outcome? And that's very important because we have these risk groups, low risk, very low risk, favorable intermediate risk, unfavorable intermediate risk, high risk, very high risk. But within each of those groups, based on the clinical kind of pathological characteristics, there's a huge heterogeneity in outpatients too, and our treatments are effective, but they can be morbid. Putting someone on hormone therapy for an extended period of time has a lot of side effects. Dose escalating radiotherapy or doing surgery and then radiation afterwards, these are big things that have a big impact on the patient, and I think we really need better risk stratification tools to understand who needs intensification and who we can de-escalate treatment for. Dr. Rafeh Naqash: I think those are absolutely valid points, perhaps not just for prostate cancer, more so for all cancers that we currently treat, especially in the current day and age, where we have a tendency to add more and more therapies, combination therapies for patients, and as you mentioned, risk stratification to help identify high risk versus low risk, where you can de intensify treatment, is of high value from a patient standpoint as well as from a financial toxicity standpoint. So then, going to this next part of the approach that you used, and from what I understand in this paper, you had the radiological aspect, which is the PSMA PET, which we'll talk about. Then you had the genomic aspect, where you did some genomic risk-based stratification. Then you had the transcriptomic score based on the Decipher score. So, could you go into some of the details, first, for the PSMA PET, when is it used? What is the utilization? What is it based on, the science behind the PSMA PET? And then we can talk about some of the other genomic transcriptomic predictors that you use in this study. Dr. Amar Kishan: Sure. Absolutely. So, a PSMA PET is an advanced molecular imaging tool. PSMA stands for prostate specific membrane antigen. It's a membrane protein that is expressed on the surface of prostate cancer cells. It is expressed elsewhere in the body as well. The utilization of this for imaging has been a revolution in the staging of prostate cancer, both upfront and in the recurrent setting. We basically had fairly recent approval for PSMA PET being used more routinely in upfront staging and recurrent staging in 2022. Essentially, what this is it gives us an ability to detect whether prostate cancer has spread at a time of diagnosis or try to localize the recurrence. Now, no imaging test is perfect, of course, and a PET has a resolution of about 3 mm. There are questions about the sensitivity of the PET. You get it on a patient with high-risk disease, the PET is negative; you do surgery, there are positive lymph nodes. That can happen, but it's far superior to the tools that we have had before. For instance, beforehand, all we would have is a contrast enhanced CT, bone scan, and MRI. And the sensitivity of those is far below that of a PSMA PET. And that has actually been shown in a randomized trial called the ProPSMA trial out of Australia, where they compared conventional upfront imaging versus PSMA upfront imaging with a crossover design, and there was better detection of disease with the PSMA PET. So that's been a revolution in how we stage prostate cancer. But I'm sure many of your listeners and others are aware of the concerns. When you get a new test and you're detecting disease that's extra prostatic, for instance, are you seeing truly significant new disease that we do need to change our management for, or are we just seeing stuff that wasn't there before that actually wouldn't impact anything? And what I mean by that is, let's say you're seeing things that would never have made a difference to the patient, but now you're saying they have metastatic disease. You're changing their entire treatment paradigm, all kinds of things like that. There's implications to this that hasn't been fully fleshed out. But very recently, like we're talking in July of 2024, essentially, there was a Lancet Oncology paper that looked at the long-term prognosis of patients who had extra prostatic disease on PSMA PET, judged by something called a PROMISE score, kind of gives a quantification on the volume of disease, the brightness of disease, and they correlated that with long term outcomes. And that was really the first time that we have long term follow up data that this extra prostatic disease on PSMA PET actually is prognostically important. So, we're getting there. I mean, now that it's approved and, in some sense, the cat is out of the bag, patients are coming in asking for a PSMA PET, etc. I'm sure everyone has experienced that, but I think we now do have good evidence that it actually is prognostically important as well. Dr. Rafeh Naqash: Thank you for that explanation. And again, to put this into context for things that I've seen and that might also help the listeners in other tumors, so, for example, melanoma surveillance tends to be or while on treatment, patients tend to have more PET scans than what you see, maybe in individuals with lung cancer, where you get a baseline PET and then you have follow up CT scan based imaging is that something that you guys have shifted from in the prostate cancer space with the approval for PSMA PET, where follow up imaging, whether patient is on treatment or surveillance imaging, is PSMA PET based? Dr. Amar Kishan: Yeah, that's a good question. I think there's actually less robust data to support it as a means of treatment response. But in terms of evaluating a recurrence, then, yes, that has become kind of a standard tool. It's very complicated because all of the metrics that we have for, say, a treatment failing are based on conventionally detected metastases or something that shows up on a CT or bone scan. So, again, that question arises if someone is on systemic therapy and then you see something on a PSMA PET, are you going to abandon the therapy that you're on? It technically would be earlier than you would otherwise have done that, or what are you going to do? So, that hasn't been fully fleshed out, but it is used in that circumstance. So, I'd say less for treatment monitoring and more for evaluation of suspected recurrence. Dr. Rafeh Naqash: Understood. And I'm guessing, as a futuristic approach, somebody out there may perhaps do a trial using PSMA PET based imaging to decide whether treatment change needs to be made or does not need to be made. Dr. Amar Kishan: Yeah. It is being incorporated into trials as we speak, I think. Dr. Rafeh Naqas

16/10/2024

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27 min
15/03/2023

KRAS Variants, G12C, TMB, high PD-L1 Expression in Solid Tumors

JCO PO author Dr. Mohamed Salem shares insights into his JCO PO article, "Landscape of KRASG12C, Associated Genomic Alterations, and Interrelation With Immuno-Oncology Biomarkers in KRAS-Mutated Cancers" and the article's findings of a large-scale, pan-cancer genomic characterization of KRASG12C. Host Dr. Rafeh Naqash and Dr. Salem discuss KRASG12C mutation, KRASG12C -mutated tumors and comutation with STK11 and KEAP1. Click here to read the article!   TRANSCRIPT Dr. Abdul Rafeh Naqash: Hello and welcome to JCO Precision Oncology Conversations, where we bring you engaging conversations with authors of clinically relevant and highly significant JCO PO articles. I'm your host, Dr. Abdul Rafeh Naqash, Social Media Editor for JCO Precision Oncology and assistant professor of Medical Oncology at the OU Stephenson Cancer Center. Today I'm thrilled to be joined by Dr. Mohamed Salem, Gastrointestinal Medical Oncologist, and Research Director at the Levine Cancer Institute in Charlotte, North Carolina. Dr. Salem is the lead author of the JCO Precision Oncology article 'Landscape of KRASG12C, Associated Genomic Alterations, and Interrelation With Immuno-Oncology Biomarkers in KRAS-Mutated Cancers'. Our guest's disclosures will be linked in the transcript. Dr. Salem, welcome to our podcast, and thank you for joining us today. Dr. Mohamed Salem: Thank you for having me. A pleasure and honor. Dr. Abdul Rafeh Naqash: For the sake of this podcast, we'll be referring to each other using our first names. So thank you for coming on to our podcast and discussing this very interesting paper. And one of the reasons why we decided to incorporate this is because, as you very well know, KRAS is one of the most common altered genes in cancer, and I'm pretty confident and sure that oncologists, whether it's academic oncologists or community oncologists, have treated patients in different settings having tumors that harbor KRAS alterations. So give us a little bit of a background on where KRAS alterations stand currently and where is drug development in the space of KRAS to give our listeners some idea of why we're interested in this gene. Dr. Mohamed Salem: Sure, thanks again for having me. And as you mentioned, KRAS mutation happens to be, I think, by far the most common oncogenic mutation we see in oncology and solid tumors. The problem with KRAS is that, for a long, long time, there was very much nothing we could do about it; it was, in fact, called an undruggable target. Until recently, we started to realize this might not be true, and, in fact, we start to see successful efforts trying to target KRAS mutation. Currently, there are several KRAS inhibitors. I think it started with G12C. I personally don't think there was anything specific about G12C, but it just happened to be one of the first targets that we were able to approach. And the initial result from using anti-G12C therapy that was published in the New England Journal of Medicine, I think, a year ago now, showed this is feasible and perhaps effective. Dr. Abdul Rafeh Naqash: Thank you so much, Dr. Salem, for that explanation. And being a Phase I trialist, I personally have seen a lot of exciting combination-based approaches in the setting of KRAS-altered tumors, especially KRASG12C. Now, specifically delving into your paper, given the extensive length and breadth of data that you've covered here, could you tell us a little bit about why you decided to use KRAS as an interesting topic for your study and the kind of data set that you chose to explore this question? Dr. Mohamed Salem: What happened once we started to realize how important it is to figure out which KRAS mutation we're dealing with because, at least in colorectal cancer, it's a very common mutation, almost like 40-50% of patients with colorectal cancer tumors carry KRAS mutation. Until very recently, we really didn't pay close attention to which variant it is. Is it KRAS G12D, 13, or G12C? And so on and so forth. And the reason we didn't really pay much attention to that is because there was nothing to do about it; whether the patient has this or that variant was really nothing therapeutically wise it really didn't have an impact. But once we started to realize now there is a therapeutic option and, in fact, now there is a change in the way we think about KRAS mutation, there is a proof of concept that we actually can target KRAS mutation, we started to pay closer attention to this. And I think this was a paradigm shift in our thinking. So for patients who have KRAS mutation, now we have data showing that KRASG12C is something we can target, whether with single agent or with combination therapy. But it was a new era for us because most of us realized it's not going to stop there. It's not going to be just G12C; I think G12C is the tip of the iceberg, and likely the science is going to go forward, try to target the other variants. So one of the obvious questions was what are the other variants and how commonly those exist, and which tumor types also carry those variants. Because as we were talking before the recording for Phase I, now it is not like one approach fits all; it started to kind of like focus on either molecularly driven or disease-type approaches. And it was very important for us to try to figure out, okay, which tumor type carries the most KRAS variants and, within that tumor, which variants are the most common. And this is what we're trying to answer in this paper. Dr. Abdul Rafeh Naqash: Thank you so much, Mohamed. I looked at your data set that you had access to, very large data set of around 79,000 tumor samples and close to 14,000 KRAS mutated tumors. Could you tell us a little more about this data set and how you started with looking at the distribution of KRAS across different tumors, and what were the kind of interesting results that you came across as far as KRAS distribution is concerned? Dr. Mohamed Salem: It's very obvious to all of us now that the field is moving from one size fits all to a targeted approach or treatment target approach. And this is very important and very interesting because usually, when we do that, we achieve better outcomes and lesser toxicity. But the problem that comes with this is that none of us, as a single, even two centers, will have enough data to ask and answer questions. And when you are talking about something like MSI-high or BRAF or KRAS, usually it becomes very challenging for one single institution, doesn't matter how big they are, to try to answer either prevalent or therapeutic approaches. Because of that, most of us now start to understand that cooperation is very important across centers and also across nations. So, like as you see here in this paper, there was a global cooperation between investigators in the U.S. and in Europe and Austria, and other countries. And what we did as a group we worked with one of the third-party profiling companies. Our group tried to answer what is the prevalence, just a very simple question, what is the prevalence of KRAS mutation, and what is the prevalence of each variant type in each tumor? And none of us could have answered that question on their own. Because of that, we actually collaborated with one of the third-party companies that do next-generation sequencing for tumors, and we were able to collaborate with them to have access to that database and answer some of those questions. Dr. Abdul Rafeh Naqash: Excellent. As everybody knows, NGS is a standard of care testing that oncologists do, especially for advanced settings, to identify driver alterations or therapeutic interventions that may be relevant for patients. So in this data set, it seems you had access to NGS data, tumor mutational burden, and PD-L1 data for these tumor types. Could you tell us about the differences in the distribution for KRAS and the KRAS subtypes that you identified in this data set? Dr. Mohamed Salem: Sure. So, as you mentioned, we looked actually at almost 79,000 tumor samples that underwent next-generation sequencing by our collaborator. And it appears that about 17% of the tumors or so had some kind of KRAS mutation. And then, after that, we start to see G12C when we start looking at each variant. G12C were about 11%, 12%, and about 88% of the remaining KRAS mutant tumors harbored some different kind of KRAS mutation. The next question was, in general, in all tumors, what was the most common KRAS variant seen? I think it mimicked what was already out there. It appears that G12D happened to be perhaps the most frequent mutation seen in KRAS mutation tumors, followed by G12V, followed by G12C, and then G12/13, and then others. What was very interesting, actually, an observation we saw, is that we were able to realize the distribution of KRAS variants varies according to the tumor subtype. So, for example, in pancreatic cancer, we could see patients who had G12R KRAS mutation variants. This was not seen commonly in other tumors. And the reason that's important is because maybe that will be something in pancreatic cancer tumors that will be worth looking at and do therapeutic approach there. But also, I'm sure you're already dealing with this in your clinic quite often. It was interesting, obviously, that non-small cell lung cancer was the most common organ that actually carries G12C, followed by colorectal cancer; followed by a very interesting actual observation that was very interesting for us to see was in appendiceal cancer. As you know, appendiceal cancer is not a common disease; it's a relatively rare disease. And we were surprised to see some of them actually have G12C mutation. And again, the reason that's important is that it just opens the door for possible therapeutic options and in context of clinical trials. Dr. Abdul Rafeh Naqash: Excellent. Definitely, the advantage of having such a rich data set like you did enabled you to look into some of these unique distributions

15/03/2023

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23 min
13/03/2019

The Heartbreak of Cancer Treatment: The Latest in Late Cardiac Toxicity

This JCO Podcast provides observations and commentary on the JCO article "Therapy-Related Cardiac Risk in Childhood Cancer Survivors: An Analysis of the Childhood Cancer Survivor Study" by Bates et al. My name is Joseph Carver, and I am the Chief of Staff at the Abramson Cancer Center of the University of Pennsylvania in Philadelphia, Pennsylvania. My specialty is cardio-oncology. It is universally accepted that therapeutic radiotherapy and/or anthracycline-based chemotherapy have a significant impact on the heart resulting in cardiac morbidity and mortality. High risk groups are now defined on the basis of a doxorubicin-equivalent anthracycline dose of ≥250 mg/m2 and/or total radiation dose of ≥30 Gy when the heart is in the treatment field. It is universally accepted that therapeutic radiotherapy and/or anthracycline-based chemotherapy have a significant impact on the heart resulting in cardiac morbidity and mortality. High risk groups are now defined on the basis of a doxorubicin-equivalent anthracycline dose of ≥250 mg/m2 and/or total radiation dose of ≥30 Gy when the heart is in the treatment field. Total dose delivered does not reflect specific cardiac exposure. This has led to report the mean heart dose that is the percent cardiac volume within the radiation fields. For most treated patients, discovery of anthracycline cumulative dosing is easily abstracted and straightforward. For modern therapeutic radiation, however, historical mean heart dose or other cardiac dosimetric parameters have not been traditionally reported and may be more difficult to obtain. This has led to a lack of consensus about the cardiovascular risk when the total dose is In the article that accompanies this podcast, Bates et al1 enhance our understanding of the association between cardiac volume exposure to different radiation therapy doses and rates of serious cardiac conditions among long term survivors of pediatric cancer and reaffirms the association of cumulative anthracycline dose and subsequent risk for cardiomyopathy. With data from the Childhood Cancer Survivorship Study, they determined the rates of self-reported grade 3-5 cardiac conditions as defined by Common Terminology Criteria for Adverse Events v4.03 in 24,214 >5-year survivors who were treated for a variety of cancers at a median age of 7 years. Evaluation occurred at a median follow-up of 20.3 years with a median attained age of 27.5 years. Late cardiac risk was compared to 5,046 untreated siblings. For each survivor, radiation fields were reconstructed on age-specific phantoms to calculate estimated mean heart dose and the percent of heart volume receiving at least 5 Gy (low dose) and 20 Gy (higher dose). Doxorubicin-equivalent doses were similarly abstracted. Toxicity parameters were any cardiac disease, coronary artery disease and heart failure. They found a cumulative incidence of cardiac disease, 30 years from diagnosis of 4.8% (95% CI 4.3-5.2). There was a dose relationship between mean heart dose and all parameters. Both low-moderate doses (5-19.9 Gy) to a large volume of the heart (>50%) and higher doses (≥20Gy) to small cardiac volumes (0.1-29.9%) were associated with an increased risk of cardiac disease. Heart failure drove the risk of high doses to small volumes while CAD drove the risk of low doses to large volumes. Similarly, they reconfirm the relationship between cumulative anthracycline dosing and any cardiac disease with an increased risk for those treated at a younger age (≤ 13 years of age). An increased relative risk for any cardiac disease was also present with any anthracycline exposure (0.1- This study shows that low-moderate dose RT to a large volume of the heart and higher-dose RT to a small volume of the heart increase the risk of late cardiac disease. It also reconfirms the association of cumulative anthracycline dosing and cardiac risk, especially in patients who were treated at What are the take-home points of this study? In spite of modern techniques to deliver therapeutic radiation and avoid the heart, a "safe" cardiac dose has not been well-defined. Two large retrospective, phantom-based studies have shown an increased risk of coronary heart disease of 7.4% per 1 Gy MHD in breast cancer and lymphoma patients. These studies have not only alerted radiation oncologists to the potential risk of even "low" radiation doses to the heart but have also driven them to push RT planning algorithms to optimize one parameter, mean heart dose. The problem with this single metric is that two treatment plans with vastly different dose maps can have the same mean heart dose: 1) low dose spread out to a large volume such as in an intensity modulated radiotherapy plan; or 2) high dose to a small volume (that may include the left anterior coronary artery) with almost no dose to the rest of the heart such as in breast tangents or a proton therapy plan. Even with current image-driven treatment planning algorithms that prioritize a low mean heart dose, it is still possible to deliver higher doses of radiation to cardiac substructures. The results from this paper have major implications for treatment planning and delivery, informing us to be wary of low dose generic mean heart dose metrics and makes a case for universal adaptation of the quantification of structure-specific dose exposure and attention to the "low-dose cloud" in the rest of the heart. For survivorship and surveillance, there are implications for guideline development evolving one step beyond binary "high risk/low risk" stratification to understand that any exposure to anthracyclines and/or therapeutic radiation is part of a continuum of risk: low risk is not no risk. This continuum informs health care providers to a proactive management approach for the late survivor population that includes aggressive management of cardiac risk factors present at initial evaluation and those that emerge over the decades of survivorship. It is equally as important to reiterate that the late cardiac toxicity due to therapeutic radiation and anthracyclines pales in comparison to the risk associated with untreated traditional cardiac risk factors: (obesity, cigarette smoking, sedentary life style, diabetes, hypertension and the metabolic syndrome) and when they are present in this population, they magnify the 4.8% cardiac event risk defined by Bates. This study also provides additional rationale for the field of cardio-oncology- for greater collaboration between medical and radiation oncologists and cardiologists at every step of the cancer treatment continuum. I congratulate Bates and colleagues for this potentially paradigm changing contribution and am optimistic that further enhancements in radiotherapy planning and delivery will reduce late cardiac toxicity and improve survival. This concludes this JCO Podcast. Thank you for listening.

13/03/2019

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10 min
11/11/2021

Hematologic Toxicities: Management of irAEs Guideline (Part 10)

An interview with Dr. Loretta Nastoupil from MD Anderson Cancer Center, author on "Management of Immune-Related Adverse Events in Patients Treated With Immune Checkpoint Inhibitor Therapy: ASCO Guideline Update." She discusses the identification, evaluation, and management of hematologic toxicities in patients receiving ICPis, including hemolytic anemia among others in Part 10 of this 13-part series. For more information visit www.asco.org/supportive-care-guidelines TRANSCRIPT [MUSIC PLAYING] SPEAKER: 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. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. BRITTANY HARVEY: Hello, and welcome to the ASCO Guidelines podcast series brought to you by the ASCO Podcast Network, a collection of nine programs covering a range of educational and scientific content and offering enriching insight into the world of cancer care. You can find all the shows, including this one, at asco.org/podcasts. My name is Brittany Harvey. And today, we're continuing our series on the management of immune-related adverse events. I am joined by Dr. Loretta Nastoupil from the University of Texas M.D. Anderson Cancer Center in Houston, Texas, author on Management of Immune-Related Adverse Events in Patients Treated with Immune Checkpoint Inhibitor Therapy: ASCO Guideline Update, and Management of Immune-Related Adverse Events in Patients Treated with Chimeric Antigen Receptor T-Cell Therapy: ASCO Guideline. And today, we're focusing on hematologic toxicities in patients treated with immune-checkpoint inhibitor therapy. Thank you for being here, Dr. Nastoupil. LORETTA NASTOUPIL: Thanks, Brittany. I'm happy to be here. BRITTANY HARVEY: Great. Then first I'd like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The full conflict of interest information for this guideline panel is available online with the publication of the guidelines in the Journal of Clinical Oncology. Dr. Nastoupil, do you have any relevant disclosures that are related to these guidelines? LORETTA NASTOUPIL: Yes, Brittany. So I have received honorarium for participation in advisory boards from the following companies, including BMS/Celgene, Genentech, Janssen, Novartis, Merck, MorphoSys TG Therapeutics, and Takeda. And I've also received research funding support from BMS/Celgene, Gilead Kite, Genentech, Janssen, Novartis and Takeda. BRITTANY HARVEY: Thank you for those disclosures. Then let's get into what we're here today to talk about. So what are the immune-related hematologic toxicities addressed in this guideline? LORETTA NASTOUPIL: So it's important to recognize that hematologic toxicities that are immune-related as a result of immune therapy are infrequent occurrences. So it's important to recognize when they do occur and some of the unique workups given that they are so infrequent. So probably one of the most common is hemolytic anemia. It's important to recognize that these are cancer patients. And they may have multiple reasons for the development of acute or new onset anemia, but recognizing if they're on either checkpoint inhibitors or immune therapies, it's important to recognize that it might be spurred on as a result of immune-mediated anemia. We advise in terms of history and workup to consider whether or not they've been exposed to new drugs, whether or not they've had a recent insect or snakebite exposure. The recommended workup includes a CBC with also a peripheral blood smear to look for evidence of hemolysis or macrocytosis. In addition, other hemolytic anemia workup includes evaluation for LDH, haptoglobin, reticulocyte count, bilirubin, and free hemoglobin. Other potential diagnoses on the differential include DIC, so a panel, including coags, PT, INR, and PTT, exploring autoimmune serologies, PNH screening, evaluation for infection such as viral or bacterial causes of hemolysis, and also consideration for bone marrow failure syndrome, including evaluation for potentially reversible causes, such as B12, folate, copper, parvovirus, iron, thyroid, infection, et cetera. G6PD level is helpful in the evaluation, as well as exploration as I mentioned of potentially new drugs that might be linked, including ribavirin, rifampin, dapsone, interferon, some of the antibiotics, such as cephalosporins, penicillins, NSAIDs, ciprofloxacin, for instance, et cetera. So as part of the workup, if we have excluded alternative causes and we think that the immune-checkpoint inhibitor might be the underlying cause of the autoimmune hemolytic anemia, then generally we will continue unless they have grade 2 or higher toxicity, which is generally a hemoglobin less than 10. In which case, we would recommend to hold the immune-checkpoint inhibitor, again, with significant anemia. So those with grade 2 or higher, you might consider initiating corticosteroids, including 1.5 to 1 milligram per kilogram per day until improvement. For grade 3 or higher-- so this is more severe anemia, so hemoglobin is less than 8. Generally, we're recommending permanent discontinuation of the checkpoint inhibitor and potentially higher doses, including up to 2 milligrams per kilogram per day of prednisone or corticosteroid equivalent to speed up the recovery. In regards to transfusion requirements or consideration, we are suggesting you evaluate or consider your local or regional guidelines. We generally do not transfuse for a target hemoglobin greater than seven to eight. And we also recommend supplementation with folic acid. BRITTANY HARVEY: Great. And then beyond those recommendations for hemolytic anemia, what are the key recommendations for identification, evaluation, and management of acquired thrombotic thrombocytopenia purpura? LORETTA NASTOUPIL: Sure. So fortunately, TTP is quite rare, but, again, something that is worth exploring. Some of the challenges are in the clinical syndrome. And that it can mimic some of the other toxicities that are covered in other sections, particularly the neurotoxicity section. But essentially, for patients who have pretty dramatic change in platelet count, again, they may have additional clinical sequelae such as neurologic toxicity or adverse events. It's important to recognize that TTP might be an underlying cause, again, for patients who are on immune-checkpoint inhibitors. This is where a hematology consult early in the clinical course would be particularly of importance to recognize it and potentially to minimize offending agents. Drug exposure is always important, because many of these patients might have other drugs, in addition to their immune-checkpoint inhibitors, such as chemotherapy, sirolimus, tacrolimus, antibiotics et cetera. And so exploring offending agents is important. An ADAMTS13 level, an inhibitor titer, would be important to send if you're considering TTP, in addition to evaluating the peripheral smear, and the hemolytic anemia workup, as I just mentioned, including LDH, haptoglobin and reticulocyte count. Exploring infectious etiology, including CMV titers or serology, would be particularly helpful, an additional clinical evaluation, such as brain imaging with CT or MRI, echocardiogram, and EKG would be of help. For all grades of TTP, again, even with a clinical suspicion for the diagnosis, in addition to hematology consult, we recommend stabilizing the patient. That might require care in an acute care setting, making sure that they have adequate organ function and that this is stabilized. For grade 1 or higher, we recommend holding the immune-checkpoint inhibitor. And you might consider, again, initiation of corticosteroids with 0.5 to 1 milligram per kilogram per day of prednisone or an equivalent. For grade 3 or higher, we would, again, in addition to holding the checkpoint inhibitor and in conjunction with your hematology colleagues, you might initiate a therapeutic plasma exchange. Again, in accordance with existing guidelines, you may consider higher doses of steroids, including methylprednisolone 1 gram IV daily for three days. You could consider some additional supportive agents, such as rituximab or pembrolizumab if the ADAMTS13 level is less than 10 or less than 10% of normal and an inhibitor or elevated ADAMTS13 IgG has been detected. BRITTANY HARVEY: I appreciate you going through the details for TTP. So then, additionally, this guideline addresses aplastic anemia. So what are the key recommendations for identification, evaluation, and management of aplastic anemia? LORETTA NASTOUPIL: Yeah. So, fortunately, again, these are quite rare situations. So with aplastic anemia, similar to what we've discussed in terms of workup of anemia, globally, it's important to explore potentially causes of, again, bone marrow failure syndrome. And aplastic anemia is one of those such causes. Exploration of a bone marrow biopsy in conjunction, again, with your hematology consult would be critically important, and exploring potentially reversible causes, again, such as deficiencies and important nutrients, viral etiologies, in addition to parvovirus, CMV, HHV-6 is important to consider and rule out. But I think the end of the day, a bone marrow biopsy and aspirate is going to be the most helpful assessment to ensure that aplastic anemia has been considered and worked up. In regards to management of aplastic anemia, we're going to hold the immune-checkpoint inhibitor. You may need to provide additional support such as growth factors. And close follow-up, I think is the most critical aspect of this. Sometimes we initiate patients on corticosteroids. We hold the checkpoint i

11/11/2021

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19 min

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