Journal of Clinical Oncology (JCO) Podcast

American Society of Clinical Oncology (ASCO)
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Journal of Clinical Oncology (JCO) Podcast

The JCO Podcast hosted by Dr. Shannon Westin features discussions of new and noteworthy results published in ASCO’s Journal of Clinical Oncology.

  1. قبل ٥ ساعات

    JCO Article Insights: Nivolumab + Relatlimab v Nivolumab + Ipilimumab in Melanoma

    In this JCO Article Insights episode, Rohit Singh provides a summary on "First-Line Nivolumab Plus Relatlimab Versus Nivolumab Plus Ipilimumab in Advanced Melanoma: An Indirect Treatment Comparison Using RELATIVITY-047 and CheckMate 067 Trial Data", by Long et al, published in the November issue of the Journal of Clinical Oncology. The article provides insights into the use of the two dual immune checkpoint inhibitor regimens in patients with untreated advanced melanoma. TRANSCRIPT Rohit Singh: Hello and welcome to JCO Article Insights. I'm your host Rohit Singh, Assistant Professor at the University of Vermont Cancer Center and today we'll be discussing the article “First-Line Nivolumab Plus Relatlimab Versus Nivolumab Plus Ipilimumab in Advanced Melanoma: An Indirect Treatment Comparison Using RELATIVITY-047 and CheckMate 067 Trials,” authored by Dr. Georgina Long from the Melanoma Institute of Australia and her colleagues.  So as we know, nivolumab plus relatlimab and nivo plus ipi, I'm going to refer to as ipi-nivo moving forward, are dual immune checkpoint inhibitors regimens that are approved for treating patients with advanced melanoma based on the phase 2 and 3 RELATIVITY-047 and phase 3 CheckMate 067 trials respectively. Nivo plus relatlimab is the only dual PD-1 and LAG-3 inhibitor regimen approved for treating patients with advanced melanoma and relatlimab is the first in class human IgG4 LAG-3 blocking antibody. Ipi plus nivo is a dual PD-1 and CTLA-4 inhibitor regimen.  So this paper basically is an indirect treatment comparison using a patient level database from these trials and this pretty much was conducted because of the absence of head to head trials looking at different regimens in advanced melanoma in first line setting. In this trial, the authors tried to compare these two trials. However, it's always hard to compare two different trials and we usually don't do cross trial comparisons. The problem is that the groups might be different to begin with. For example, one group might have younger patients, healthier patients, while the other might have older or sicker. These differences can make it hard to tell if the treatment caused improvement or if the groups were different to begin with. In this trial, researchers use inverse probability of treatment weighting to adjust the baseline differences between the two patient groups or between these two trials. Inverse probability of treatment weighting is a method used in research to help make a fair comparison between two groups when studying how a treatment intervention works. Basically, IPTW helps level the playing field between the two groups or like two trials for this paper. So, it calculates the likelihood of receiving a treatment. For each person, for each patient, researchers estimate the chance they would have gotten the treatment based on their characteristics like age, health, condition, their baseline staging, and based on that they create weights. People who are less likely to get the treatment but did are given more weight, and those who are very likely to get the treatment are given less weight. The same is done for the group that didn't get the treatment, and then they rebalance the groups. By applying these weights the group becomes more similar in their characteristics as if everyone had an equal chance of getting the treatment. This way, IPTW helps researchers focus on the effect of treatment itself and other differences between the groups. It's like adjusting the scales to make sure you are comparing apples to apples.  The key outcomes the authors are looking at in this one was progression free survivals, overall survival, confirmed objective response rate, melanoma specific survival, and treatment related adverse events. Looking at the results of this cross comparison trial, first looking at the PFS or progression free survival, both regimens ipi plus nivo and nivo plus relatlimab, showed similar PFS. At 36 months, PFS was 36

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  2. ١٢ جمادى الأولى

    Quality of Treatment Selection

    Host Dr. Davide Soldato and Dr. Aaron Mitchell discuss the JCO article "Quality of Treatment Selection for Medicare Beneficiaries With Cancer" TRANSCRIPT Dr. Davide Soldato: Hello and welcome to JCO After Hours, the podcast where we sit down with authors from some of the latest articles published in the Journal of Clinical Oncology. I am your host, Dr. Davide Soldato, medical oncologist at Hospital San Martino in Genoa, Italy. Today, we are joined by JCO author Dr. Aaron Mitchell. Dr. Mitchell is a medical oncologist working at Memorial Sloan Kettering Cancer Center where he is also part of the Department of Epidemiology and Biostatistics. Dr. Mitchell specializes in treating genitourinary malignancy and has a research focus on improving how the healthcare system helps people with these and other cancers. So today, Dr. Mitchell will be discussing the article titled, “Quality of Treatment Selection for Medicare Beneficiaries with Cancer.” Thank you for speaking with us, Dr. Mitchell. Dr. Aaron Mitchell: Well, thank you for inviting me. I'm very glad to be here. Dr. Davide Soldato: So I just wanted to introduce the topic by asking a couple of questions, very general, about the background of the article. So basically you reported the data using the SEER-Medicare to assist to assess the determinants of optimal systemic therapies delivery and selection. So, in particular, you focused on individuals that were diagnosed with cancer who were Medicare beneficiaries and in particular were part of the low income subsidy, which is also known as LIS. So I just wanted to ask you if you could briefly explain to our listeners how this program works, and what was the rationale of the study, and if there is any element of novelty in your study compared to what was done before the study was published. Dr. Aaron Mitchell: Yeah. So that's a lot to cover, but yeah, a lot of opportunity to introduce the low income subsidy program which is a very important part of the Medicare program for prescription drugs, but often one that flies under the radar a little bit in the policy discussion. So this subsidy was created synchronously back with the Medicare Part D Program, which was created in 2006. There was some anticipation that for some high cost drugs, not all patients would be able to afford them even with the Part D program insurance as it was being created. And so they created a pathway to give an additional subsidy to some patients who had low income, who were anticipated to being at need and needing that assistance to afford high cost drugs. As the number of high cost drugs has really risen since 2006, this program has played an important role in helping patients afford drugs, especially those who need very expensive cancer drugs.  And what this program does is, once you meet the eligibility requirements, which require patients to have both quite a low income. So if you're single, that is at 135% of the federal poverty limit or below, and it also places some restrictions on assets. You also have to have low assets, so low income and low assets in order to qualify for the subsidy. But then once you do, the subsidy is really quite large. Patients who qualify for the LIS at the full subsidy level will pay about $10 per month per drug, even for specialty cancer drugs. So if you think about drugs such as those that we use to treat prostate cancer, my specialty, drugs like enzalutamide or XTANDI that run $15,000 to $20,000 per month, the out of pocket cost for a low income subsidy beneficiary is $10. So that is a huge discount. $10 isn't nothing, but even for someone with a low income, if they've got one or two cancer drugs that are at this rate, it's something that they can often afford.  This program applies to Part D cancer drugs that are prescription drugs basically. By and large, these are oral pills that patients are taking on a daily basis at home. These are the drugs that the low income subsidy program applies to. So if a patie

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  3. ٢٥ ربيع الآخر

    JCO Article Insights: HLA-Mismatched Unrelated Donor HCT With PTCy

    In this JCO Article Insights episode, Alexandra Rojek provides a summary on "Post-Transplant Cyclophosphamide–Based Graft-Versus-Host Disease Prophylaxis Attenuates Disparity in Outcomes Between Use of Matched or Mismatched Unrelated Donors" by Schaffer et al published in the Journal of Clinical Oncology July 17th, 2024. TRANSCRIPT Alexandra Rojek: Hello and welcome to JCO Article Insights. I'm your host, Alexandra Rojek, and today we will be discussing an original report published in the October 1st issue of JCO titled, “Post-Transplant Cyclophosphamide–Based Graft-Versus-Host Disease Prophylaxis Attenuates Disparity in Outcomes Between Use of Matched or Mismatched Unrelated Donors,” by Shaffer et al. The CIBMTR registry study set out to compare outcomes of patients undergoing allogeneic stem cell transplantation hematologic malignancies by HLA antigen matching status as well as by the type of GVHD prophylaxis regimen received either calcineurin inhibitor-based prophylaxis or post-transplant cyclophosphamide or PTCy. This study included patients reported to CIBMTR from January 2017 to June 2021 with AML, ALL or MDS, and required that they have undergone allotransplant with either a calcineurin inhibitor based so tacro or cyclosporine, GVHD prophylaxis, or PTCy, which included a calcineurin inhibitor or sirolimus with or without MMF and ATG. Matched unrelated donors were defined as an 8 out of 8 HLA match. And mismatched unrelated donors were defined as HLA mismatched at any single locus or 7 out of 8. The primary objective of the study aimed to compare overall survival or OS and GVHD and relapse-free survival (GRFS) within and between matched unrelated donors versus mismatched unrelated donors separated by calcineurin inhibitor versus PTCy based GVHD prophylaxis. GRFS was defined as survival without grade 3 to 4 acute GVHD, moderate to severe chronic GVHD requiring systemic therapy or relapse. 10,025 patients were included from 153 centers, with a median follow up of over 36 months. Mismatched unrelated donor recipients were made up of 22% minority ancestry patients as compared to just 8% of patients receiving a matched unrelated donor allo transplant, showing an enrichment for patients of minority ancestry in the mismatched unrelated donor group. Just under 10% of patients were of minority ancestry in the study overall, reflective of challenges in transplant care for these patients, which may include inferior access to care, fewer available and suitably matched donors, among other factors. 54% of all patients were transplanted for AML and 29% for MDS. 45% of patients received myeloablative conditioning, 25% received regimens containing ATG, and 23% overall received PTCy with either a calcineurin inhibitor or sirolimus as well as MMF. Among patients receiving PTCy, the authors did not find differences in overall survival by degree of HLA matching, whereas among patients receiving calcineurin inhibitor-based prophylaxis, there remained survival differences by HLA matching status. When comparing matched unrelated donor calcineurin inhibitor patients with PTCy matched unrelated donor patients, the PTCy arm had better OS, and the mismatched unrelated donor group who received PTCy had similar OS as well. For GRFS, matched unrelated donor and mismatched unrelated donor PTCy patients had no difference in GRFS, similar to the trend the authors see with overall survival. But these patients also had better GRFS than matched unrelated donor patients receiving calcineurin inhibitor-based prophylaxis. Within each prophylaxis arm, there was no difference in GRFS by HLA matching status. HLA mismatched patients receiving PTCy were less likely to experience GRFS than HLA mismatched patients receiving calcineurin inhibitor-based prophylaxis. The authors saw similar differences in comparative trends when subgrouping patients based on conditioning intensity and additionally did not find differences in GRFS and OS by ATG expo

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  4. ١٣ ربيع الآخر

    Adjuvant Pembrolizumab for High-Risk, dMMR Endometrial Cancer

    Dr. Shannon Westin and her guest, Dr. Brian  Slomovitz discuss the article “Pembrolizumab or Placebo Plus Adjuvant Chemotherapy With or Without Radiotherapy For Newly Diagnosed, High-Risk Endometrial Cancer: Results in Mismatch Repair-Deficient Tumors” recently published in the JCO and presented at the 2024 International Gynecologic Cancer Society. TRANSCRIPT The guest’s disclosures can be found in the transcript.  Dr. Shannon Westin: Hello, and welcome to another episode of JCO After Hours, the podcast where we get in depth on manuscripts and literature published in the Journal of Clinical Oncology. I'm your host, Shannon Westin, gynecologic oncologist and JCO Social Media Editor by trade. I am thrilled because we are going to be talking about gynecologic cancer today. So, this is my jam. And specifically, we're going to be talking about a manuscript that's a simultaneous publication in the Journal of Clinical Oncology and presented at the Annual Meeting of the International Gynecologic Cancer Society on October 16, 2024. And this is “Pembrolizumab or Placebo, Plus Adjuvant Chemotherapy, With or Without Radiotherapy for Newly Diagnosed High Risk Endometrial Cancer: Results in Mismatch Repair Deficient Tumors.” This is affectionately the KEYNOTE-B21 trial, also known as the GOG-3053 trial and the ENGOT-en11 trial. And we are joined today by the primary author in this manuscript, Dr. Brian Slomovitz, who is the Director of Gynecologic Oncology at Mount Sinai Medical Center in Miami Beach, Florida, and the clinical trial advisor in uterine cancer for the Gynecologic Oncology Group foundation. Welcome, Brian. Dr. Brian Slomovitz: Hey, thanks, Shannon, so much. It's a pleasure to be here. And thanks for giving us the opportunity to discuss this trial. Dr. Shannon Westin: Yes, it's a great trial and I'm so excited to talk about it. And I think we'll start just because this is a broad group that listens to this podcast, they're not all GYN oncologists, experts like yourself, so can you just level set a little bit and speak a bit about the incidence and mortality of endometrial cancer overall and the recent trends in this disease? Dr. Brian Slomovitz: Yeah, sure. So, and it is nice to speak about gynecologic cancers, as we know, endometrial cancer was and still is the most common of all gynecologic cancers. The numbers are going up. Right now, there's about 65,000 to 70,000 cases each year in the US diagnosed with endometrial cancer. The numbers are going up. A lot of its obesity related, some other factors, but as the population gets less healthy, those are some of the risk factors for the disease. The thing that, however, is quite surprising is that we're seeing the deaths due to endometrial cancer going up as well, while for other diseases, we're making slow, steady steps to try to decrease the mortality we're actually seeing an increase in mortality. And the most discouraging point, Shannon, as you know is the number of deaths from endometrial cancer is going to outnumber the number of deaths from ovarian cancer if it hasn't done it already. I mean, now's the time. So, we really need to come up with better treatment strategies to everything to decrease the incidence of disease, to help with prevention, but for those poor women who are diagnosed, to come up with better treatment options so we don't have to keep this increasing trend in mortality. Dr. Shannon Westin: Absolutely. And I think some of that is related and we don't need to get on a soapbox here, but the amount of funding that goes towards research in endometrial cancer, and of course you, you have been leading the way and really trying to get a ton of trials in this space and getting our industry partners and our government partners to really support this. So really just commending you on how much you've worked on, on this area. And to that end, we've had a huge renaissance with immunotherapy and endometrial cancer, a lot of really big

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  5. ٢٧ ربيع الأول

    Combining Response and Toxicity Data to Implement Project Optimus

    In this JCO Article Insights episode, Subodh Selukar interviews author Dr. Robert Maki on "Combining Response and Toxicity Data to Implement Project Optimus" by Maki, et al published in the Journal of Clinical Oncology September 11, 2024. TRANSCRIPT Subodh Selukar: Welcome to this episode of JCO Article Insights. This is Subodh Selukar, JCO's editorial fellow. Today, I am interviewing Dr. Robert Maki on his recent editorial, “Combining Response and Toxicity Data to Implement Project Optimus.” At the time of this recording, our guest has disclosures that are available in the manuscript and will be linked in the transcript. Dr. Maki, welcome to our podcast. Dr. Robert Maki: Hi, Subodh. It's a pleasure to be able to take part. Subodh Selukar: Yeah, thank you. So, to start us off, would you give an overview of your article? Dr. Robert Maki: Yes. Well, it's not my article, but it's just an editorial which is a commentary on an article by authors Cheng and Associates. It's called, “Exposure-Response-Based Multiattribute Clinical Utility Score Framework to Facilitate Optimal Dose Selection for Oncology Drugs.” That's a very technical title and so forth, and yet it's a JCO article because we think that it makes an important point that in oncological trials, we talk a lot about primary endpoints, oftentimes of overall survival or progression free survival, sometimes even just response rates, but most of the time, we don't take into account the toxicity of an agent. So, you can imagine that if a drug is relatively nontoxic, then what you see is what you get. Progression free survival could be associated with what is called some sort of so-called clinical benefit. However, if a drug is really toxic and you're just laid up on the couch all day or bed bound, or need transfusions three days a week, where is that really beneficial for the patient? But, by the same token, there's no quality of life without life itself. You have to have some sort of evidence that someone is going to be around for a longer period of time as an indication of benefit. So, these are ideas that have been played out to some degree for the better part of a quarter of a century. There's a biostatistician at MD Anderson named Peter Thall, who's one of the first people to think about this idea of combining toxicity data and response data as some sort of a combination primary endpoint for a trial. And where this comes into play for Project Optimus, this FDA initiative to come up with not just necessarily one dose or one dose and schedule, but rather a range or multiple doses and schedules for a drug based on the toxicity that's seen, is that this new paper by Dr. Cheng and colleagues provides one mechanism for doing this, for combining not just traditional clinical outcomes data, but also toxicity data. Subodh Selukar: So, you mentioned Project Optimus is an important component of all of this. So, can you tell a little bit about what Project Optimus is and maybe a little bit potentially about how Project Optimus has affected you so far? Dr. Robert Maki: I'd say it's having an effect mostly in the earlier phases of drug development. I'm not certain, but I think it was an outgrowth of some of the toxicity that was seen in some of the studies that were done over the course of the last 10 to 15 years with kinase-targeted drugs. The overall goal from the FDA Project Optimus was to work with companies, with academia, groups like ASCO and regulatory authorities, as well as patients to try and come up with dosing for everyone basically based on patient characteristics that they're focusing not just on those outcomes, such as progression, pre survival, overall survival, but also looking for quality of life and adding that into the mix in terms of how you choose a dose. So that's an effort that's been going on for the last several years now. There's been some nice articles on that from FDA on that and perhaps we could provide some links to those as wel

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  6. ٩ ربيع الأول

    CBT-I for Cancer-Related Cognitive Impairment

    Host Dr. Davide Soldato and Dr. Shelia Garland discuss the JCO article "Randomized Controlled Trial of Virtually Delivered Cognitive Behavioral Therapy for Insomnia to Address Perceived Cancer-Related Cognitive Impairment in Cancer Survivors." TRANSCRIPT The guest on this podcast episode has no disclosures to declare. Dr. Davide Soldato: Hello and welcome to JCO After Hours, the podcast where we sit down with authors from some of the latest articles published in the Journal of Clinical Oncology. I am your host, Dr. Davide Soldato. I am a Medical Oncologist at Ospedale San Martino in Genoa, Italy. Today we are joined by JCO author Dr. Sheila Garland. She's a Professor of Psychology and Oncology at Memorial University, and she's the director at the Sleep, Health, and Wellness Lab and Senior Scientist at the Beatrice Hunter Cancer Research Institute. Dr. Garland will be discussing the article titled, “Randomized Controlled Trial of Virtually Delivered Cognitive Behavioral Therapy for Insomnia to Address Perceived Cancer-Related Cognitive Impairment in Cancer Survivors.” Thank you for speaking with us, Dr. Garland.  Dr. Sheila Garland: Thank you so much for having me. Dr. Davide Soldato: So, Dr. Garland, you designed a study that relied on cognitive behavioral therapy to treat insomnia, and then you assessed whether improvement in insomnia would be associated with an improvement in cancer related cognitive impairment. So I wanted to ask if you could give us a little bit of context and explain the rationale between these studies. So how common are these symptoms among cancer survivors, and why do we think that improving insomnia would also improve cognitive function?  Dr. Sheila Garland: Yeah, thank you very much. That's a really, really good question. And so cognitive behavior therapy for insomnia has been used to successfully treat insomnia in cancer survivors for quite some time. I think JCO was one of the first publishers to really demonstrate the potency of this intervention to improve insomnia. But as we know, patients will often present not just with insomnia, but insomnia comorbid with pain, fatigue, and very commonly cognitive impairment. If we take a look at the experimental research in sleep, we know that sleep quality and quantity is associated with very important cognitive functions. And so we've had clear sleep deprivation studies where if you're not able to successfully get sufficient quality or quantity of sleep, you're going to have impairments in attention and concentration and memory. So it really makes sense that if we're able to improve sleep in cancer survivors, that we're also able to address maybe some of the other concerns that they would have related to sleep. So this is an important clinical question for the patient's quality of life, but I also think it has important system implications where if we're looking at like resources and efficiency of allocating those resources, if we have an intervention that can treat multiple problems, that means that we can more effectively address lots of symptoms and use fewer resources in doing so. So that was the thought in designing this trial. Dr. Davide Soldato: Thank you very much. That was very, very clear. So you spoke about the intervention that you implemented in the clinical trial. So I was wondering if you could give us a little bit of context. How long was the intervention? What were the main points addressed? Because you said that, in the end, we already have some data regarding cognitive behavioral therapy for treating insomnia. So I was wondering, did you personalize in any way, the program or the intervention to fit more to the cancer survivors population?  Dr. Sheila Garland: Yeah. So it is based on a protocol that has been well researched and has a great deal of evidence of efficacy. But we delivered this intervention over a course of seven weeks. So individuals had individual sessions with a trained therapist, and those sessi

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  7. ٢٢ صفر

    JCO Article Insights: Assisted Reproduction in Breast Cancer Patients

    In this episode of JCO Article Insights, Dr. Giselle de Souza Carvalho interviews Dr. Hatem Azim and Dr. Ann partridge on their JCO article “Fertility Preservation and Assisted Reproduction in Patients With Breast Cancer Interrupting Adjuvant Endocrine Therapy to Attempt Pregnancy,” TRANSCRIPT Giselle Carvalho: Welcome to the JCO Article Insights episode for the August issue of the Journal of Clinical Oncology. This is Giselle Carvalho, your host. I'm a Medical Oncologist in Brazil focusing on breast cancer and melanoma skin cancers, and one of the ASCO editorial fellows at JCO this year. Today, I will have the opportunity to interview Dr. Hatem Azim and Dr. Ann Partridge, two of the authors of the POSITIVE trial. We will be discussing their trial on “Fertility Preservation and Assisted Reproduction in Patients With Breast Cancer Interrupting Adjuvant Endocrine Therapy to Attempt Pregnancy,” which was published in May this year.  Hello, Dr. Azim and Dr. Partridge. Welcome to our podcast. Dr. Ann Partridge: Hi. Thanks. Dr. Hatem Azim: Hello. Giselle Carvalho: So, beginning with our interview for breast cancer survivors, in addition to the treatment itself, aging is one of the major contributors to infertility. The optimal duration of adjuvant endocrine therapy in patients with hormone positive early breast cancer ranges from five to ten years, depending on patient and tumor characteristics. This time interval can be critical for women who wish to attempt pregnancy. One of the main concerns in daily breast cancer oncology practice is whether breast cancer recurrence rates are increased either by temporary interruption of endocrine therapy for pregnancy or by the use of assisted reproductive technologies. Dr. Azim, what about assisted reproductive technology is worrisome regarding breast cancer outcomes? And how do the POSITIVE study results address the concern about worsening breast cancer outcomes either with assisted reproductive technology or endocrine therapy interruption? Dr. Hatem Azim: So, in the primary analysis of the POSITIVE trial, we tried to address one of these questions, whether temporary interruption with endocrine therapy affects breast cancer outcome. And what we found was that interruption did not appear to have a detrimental impact at the median follow up of 41 months. So in the current manuscript, we addressed the second question, whether assisted production of fertility preservation has an impact as well on breast cancer outcome. And we did not find any worsening of outcomes in patients who underwent these procedures compared to those who had a spontaneous pregnancy. Of course, we have relatively short follow up, but at least the outcomes at the median follow up of around 3 to 4 years appears to be reassuring. Giselle Carvalho: I see. Thank you. These are really important outcomes regarding premenopausal patients. So, moving on, results from your study show that after 24 months, 80% of women under 35 years old had at least one successful pregnancy, while the same was true for 50% of women aged 40 to 42. These results are particularly impressive considering that over 60% of women over 35 had undergone chemotherapy.  Dr. Partridge, other than age, what factors did you find were associated with a successful pregnancy?  Dr. Ann Partridge: Yeah. The biggest factor, other than age, that was associated with successful live birth pregnancy was use of assisted reproductive technologies. So either having gone through IVF prior to diagnosis and banking eggs or embryos prior to diagnosis and then using them during the study, for undergoing stimulation of the ovaries during the study and then using it during the study. And that's what we also looked at in this most recent analysis of the initial POSITIVE data.  Giselle Carvalho: I see. Thank you. The group of patients who underwent embryo oocyte cryopreservation at diagnosis were more likely to be nulliparous and treated with chemot

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  8. ٤ صفر

    Multi-Cancer Early Detection Testing for High-Risk Patients

    Host Dr. Davide Soldato interviews Dr. Sana Raoof to discuss the JCO article Turning the Knobs on Screening Liquid Biopsies for High-Risk Populations: Potential for Dialing Down Invasive Procedures. TRANSCRIPT Dr. Davide Soldato: Hello, and welcome to JCO After Hours, the podcast where we sit down with others from some of the latest articles published in the Journal of Clinical Oncology. I am your host, Dr. Davide Soldato, Medical Oncologist at Ospedale San Martino in Genoa, Italy. Today, we are joined by JCO author Dr. Sana Raoof, Physician at Memorial Sloan Kettering, to talk about her article, “Turning the Knobs on Screening Liquid Biopsies for High-Risk Populations: Potential for Dialing Down Invasive Procedures.”   Thank you for joining us today, Dr. Raoof. Dr. Sana Raoof: Thank you so much. It's lovely to be here. Dr. Davide Soldato: So, Dr. Raoof, I just wanted to start a little bit about the theme of your article, which is really centered around multi-cancer early detection tests. And this comes from the results of several studies that showed their reliability and efficacy in identifying cancer in the average risk population. But I just wanted to ask you if you could give us and our readers a brief overview of how these tests work and how they were designed for this specific population. Dr. Sana Raoof: Of course. Well, there's an interesting story. The origin of multi-cancer early detection tests actually begins with insights that come from the field of obstetrics and gynecology. So about six or seven years ago, in the peripheral blood of pregnant women, we discovered that you can actually find fetal DNA floating around. And that was an early discovery of cell free DNA coming from the baby into the mother's bloodstream. But in some of those young, otherwise healthy women, we also discovered that there's another clonal signal, unfortunately not coming from the fetus, but coming from an undiagnosed tumor. And that led to the entire field of circulating tumor DNA and all of its applications.  Of course, scientists in the last six or seven years have harnessed the fact that DNA and the methylation patterns on the circulating tumor DNA, as well as other analytes like glycosaminoglycans, proteins, and other analytes, are secreted by tumors into the peripheral blood in order to try and screen for tumors, hopefully at early stages, when there are still curative, definitive interventions that are available. There's several different tests now that are providing the ability to detect cancers at many stages, including early stages. They're in different phases of preclinical to clinical development, and one is even commercialized and available by prescription in the United States. Dr. Davide Soldato: Okay. So I think that in most of these tests, they really look at the tumor DNA, so they identify mutations or, for example, methylation patterns. But do we also have some tests that integrate some other type of biomarkers that we can identify in the blood? Like, are they integrated all with the others, or are we just relying on circulating tumor DNA? Dr. Sana Raoof: It's a great question. There's a lot of really fascinating biology that different companies predominantly are using in order to find signs of early cancer. One of the analytes that I find really interesting, other than looking for small variants in circulating tumor DNA and looking at methylation patterns, as you mentioned, is looking at fragment length. So, for example, the company DELFI looks at the different patterns of the length of DNA fragments that are floating around in the peripheral blood. And not only is fragment length tissue specific, so in theory, a fragmentomics based multi-cancer early detection test could tell us what is the tissue that this aberrant signal is coming from, but they can also tell you if there's likely a cancer present, because there's a difference in fragment length patterns in cancer versus non cancer.  There

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The JCO Podcast hosted by Dr. Shannon Westin features discussions of new and noteworthy results published in ASCO’s Journal of Clinical Oncology.

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  • صناع العمل
    American Society of Clinical Oncology (ASCO)
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    ١٤٣٢ هـ - ١٤٤٦ هـ
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    © Copyright by the American Society of Clinical Oncology
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    Journal of Clinical Oncology (JCO) Podcast

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