Sep 18 2024 25 mins 1
JCO PO author Dr. Alok A. Khorana, MD, FASCO, Professor of Medicine, Cleveland Clinic and Case Comprehensive Cancer Center, shares insights into the JCO PO article, “Molecular Differences With Therapeutic Implications in Early-Onset Compared With Average-Onset Biliary Tract Cancers.” Host Dr. Rafeh Naqash and Dr. Khorana discuss how multiomic analysis shows higher FGFR2 fusions and immunotherapy marker variations in early-onset biliary cancer.
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 POarticles. I'm your host, Dr. Rafeh Naqash, Podcast Editor for JCO Precision Oncology and Assistant Professor at the OU Health Stephenson Cancer Center at the University of Oklahoma.
Today, we are joined by Dr. Alok A. Khorana, Professor of Medicine at the Cleveland Clinic and Case Comprehensive Cancer Center, and also the Senior Author of the JCO Precision Oncology article titled, “Molecular Differences With Therapeutic Implications in Early-Onset Compared With Average-Onset Biliary Tract Cancers.”
At the time of this recording, our guest disclosures will be linked in the transcript.
Dr. Khorana, it's an absolute pleasure to have you here today, and welcome to the podcast.
Dr. Alok A. Khorana: Thank you. It's an absolute pleasure to be here and thank you for highlighting this article.
Dr. Rafeh Naqash: Absolutely. We're going to talk about science, obviously, and a few other things. So to start off, for the sake of our audience, which comprises academicians and community oncologists as well as trainees, can you tell us a little bit about biliary tract cancers, what we have learned over the last decade or so, where the standard of treatment currently lies. And then we can dive into the article that you published.
Dr. Alok A. Khorana: As many of you who treat GI cancers know, biliary tract cancers for a long period of time were sort of the orphan cancer in the GI cancer world. They're not nearly as common as, say, pancreatic cancer, and certainly not as common as colorectal cancer. They're sort of also, in this weird ‘no man's land’ between well known sort of adjuvant therapy trials in pancreatic cancer or colorectal cancer, but because they're not as high in volume, there weren't really large trials done in this population. What's really changed in the past decade, especially, has been the slow but sure realization that biliary tract cancers are in fact a target rich cancer, almost similar to what you would see with lung cancer, and that's only a slight exaggeration. And in some studies, as many as up to 40% of patients with biliary tract cancers can have something that's targetable. And that's really revolutionized the way we think of biliary tract cancers. It also separated this field from pancreatic cancer where formerly the two used to be lumped together, and even within biliary tract cancers, we are now slowly realizing that there are differences between intrahepatic, extrahepatic and gallbladder cancers. Big change is really afoot in this field, particularly with the identification of mutation directed targets.
Dr. Rafeh Naqash: Thank you for that explanation.
Now, another question I have is, although I don't see any GI cancers, but I have good colleagues of mine at our cancer center who see a lot of GI pancreatic/biliary cancers, and one of the things that comes up in our molecular tumor board often is how certain cancers of unknown primary end up being identified or categorized as biliary tract cancers based on NGS. And again, the uptake for these NGS is perhaps isn't optimal in the field yet, but in your practice, how do you approach situations like that? Do you use NGS in certain cases where the tissue of origin or the patterns of the mutations indicate that this might be biliary tract cancer and then treat the patient accordingly?
Dr. Alok A
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 POarticles. I'm your host, Dr. Rafeh Naqash, Podcast Editor for JCO Precision Oncology and Assistant Professor at the OU Health Stephenson Cancer Center at the University of Oklahoma.
Today, we are joined by Dr. Alok A. Khorana, Professor of Medicine at the Cleveland Clinic and Case Comprehensive Cancer Center, and also the Senior Author of the JCO Precision Oncology article titled, “Molecular Differences With Therapeutic Implications in Early-Onset Compared With Average-Onset Biliary Tract Cancers.”
At the time of this recording, our guest disclosures will be linked in the transcript.
Dr. Khorana, it's an absolute pleasure to have you here today, and welcome to the podcast.
Dr. Alok A. Khorana: Thank you. It's an absolute pleasure to be here and thank you for highlighting this article.
Dr. Rafeh Naqash: Absolutely. We're going to talk about science, obviously, and a few other things. So to start off, for the sake of our audience, which comprises academicians and community oncologists as well as trainees, can you tell us a little bit about biliary tract cancers, what we have learned over the last decade or so, where the standard of treatment currently lies. And then we can dive into the article that you published.
Dr. Alok A. Khorana: As many of you who treat GI cancers know, biliary tract cancers for a long period of time were sort of the orphan cancer in the GI cancer world. They're not nearly as common as, say, pancreatic cancer, and certainly not as common as colorectal cancer. They're sort of also, in this weird ‘no man's land’ between well known sort of adjuvant therapy trials in pancreatic cancer or colorectal cancer, but because they're not as high in volume, there weren't really large trials done in this population. What's really changed in the past decade, especially, has been the slow but sure realization that biliary tract cancers are in fact a target rich cancer, almost similar to what you would see with lung cancer, and that's only a slight exaggeration. And in some studies, as many as up to 40% of patients with biliary tract cancers can have something that's targetable. And that's really revolutionized the way we think of biliary tract cancers. It also separated this field from pancreatic cancer where formerly the two used to be lumped together, and even within biliary tract cancers, we are now slowly realizing that there are differences between intrahepatic, extrahepatic and gallbladder cancers. Big change is really afoot in this field, particularly with the identification of mutation directed targets.
Dr. Rafeh Naqash: Thank you for that explanation.
Now, another question I have is, although I don't see any GI cancers, but I have good colleagues of mine at our cancer center who see a lot of GI pancreatic/biliary cancers, and one of the things that comes up in our molecular tumor board often is how certain cancers of unknown primary end up being identified or categorized as biliary tract cancers based on NGS. And again, the uptake for these NGS is perhaps isn't optimal in the field yet, but in your practice, how do you approach situations like that? Do you use NGS in certain cases where the tissue of origin or the patterns of the mutations indicate that this might be biliary tract cancer and then treat the patient accordingly?
Dr. Alok A
