JCO PO author Dr. Bryson Katona at the University of Pennsylvania Perelman School of Medicine shares insights into his article, "Areas of Uncertainty in Pancreatic Cancer Surveillance: A Survey Across the International Pancreatic Cancer Early Detection (PRECEDE) Consortium" Host Dr. Rafeh Naqash and Dr. Katona discuss how, given differing guidelines as well as lack of detail about how PC surveillance should be performed, approaches to PC surveillance across centers often differs.

TRANSCRIPT

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 am your host, Dr. Rafeh Naqash, podcast editor for JCO Precision Oncology and Associate Professor at the OU Health Stephenson Cancer Center at the University of Oklahoma.

Today, I am thrilled to be joined by Dr. Bryson Katona, Director of the Gastrointestinal Cancer Genetics Program and Director of the Lynch Syndrome Program at the Penn Medicine's Abramson Cancer Center, and also lead author of the JCO PO article entitled "Areas of Uncertainty in Pancreatic Cancer Surveillance: A Survey Across the International Pancreatic Cancer Early Detection or PRECEDE Consortium."

Bryson, thanks for joining us again.

Dr. Bryson Katona: Well, thank you so much for having me. I appreciate the opportunity.

Dr. Rafeh Naqash: It is exciting to see that this work will be presented concurrently with the upcoming CGA meeting.

Dr. Bryson Katona: Yes, it has been a fantastic partnership between JCO PO and the CGA-IGC and their annual meeting. And for those who may not be familiar, the CGA-IGC is the Collaborative Group of the Americas on Inherited Gastrointestinal Cancer. It is basically a professional organization dedicated to individuals who have hereditary GI cancer risk and focusing on providing education, promoting research, and really bringing together providers in this space from not just throughout the US but from across the globe as well.

Dr. Rafeh Naqash: That is exciting to hear the kind of work you guys are doing. These are definitely interesting, exciting things. Now, going to what you have published, it is an area that is very evolving in the space of cancer screening, cancer surveillance, especially for a very aggressive cancer such as pancreatic cancer. Could you tell us currently, what are the general consensus? I know there are a lot of differences between different guidelines or societies, but what are the some of the commonalities if we were to start there first for pancreas cancer screening? If you are not a GI oncologist, you may not be aware that there is something with regards to pancreas cancer screening. Could you give us an overview and a background on that?

Dr. Bryson Katona: Yeah, I think that pancreatic cancer screening really is one of the most controversial areas of all cancer screening. Part of that controversy is just because all the guidelines, the many different guidelines that are out there, do not always match up with one another, which I think leads to a lot of confusion, not just for providers but for patients who are trying to go through this, and then also the insurance companies in trying to get these screening tests covered.

You know, when we think about who is eligible for pancreatic cancer screening, you know, it is important that these are not average-risk individuals. So really, we are only offering screening to high-risk individuals. And those can include people that have a strong family history of pancreatic cancer without a germline genetic susceptibility that has been identified. And those individuals we refer to as having familial pancreatic cancer. And the other big cohort is those individuals that carry hereditary pancreatic cancer predisposition. These are due to cancer risk mutations in many different genes, including many of the breast cancer risk genes like BRCA1 and BRCA2, as well as ATM and PALB2, but then other genes such as the Lynch syndrome genes, and then some of the higher risk genes such as those leading to Peutz-Jeghers syndrome as well as FAM, which is due to CDKN2A mutations.

Dr. Rafeh Naqash: Thank you for that. Again, another practical question, and this may or may not be exactly related to your specific topic here, but perhaps to some extent there might be an overlap. If I get a patient from a colleague, and I see people in the early-phase clinical trial setting, so many different tumors for novel drugs, and I find an individual with, let us say, lung cancer who has a pathogenic BRCA2, which is somatic, should I be worried about pancreas cancer screening in that individual? Or have we not met that threshold yet in that circumstance?

Dr. Bryson Katona: A lot of times these variants or these genes that are associated with pancreatic cancer risk get picked up on the somatic tumor profiles. Now, you know, whether or not those are truly germline variants typically requires the next step of referring the patient for germline genetic testing. So you know, I would not screen or make any kind of screening choices based on a somatic variant alone, but nowadays germline testing is so easy, so efficient, and relatively cheap that it is easy enough to confirm whether or not these somatic hits are in fact just somatic or may confer some germline risk in addition.

Dr. Rafeh Naqash: So from what I understand from what you have said, there is debate about it, but it is something that should be done or is important enough that you need to figure out a path moving forward. Was that one of the reasons why you performed this project through this very interesting consortium called the PRECEDE Consortium?

Dr. Bryson Katona: Yeah, that was one of our main reasons for doing this. And for those who do not know about the PRECEDE Consortium, this is a very large international, multi-institutional organization really focused on reducing death and improving survival from pancreatic cancer, primarily through increased and more effective use of screening and early detection strategies. This is an international consortium. There are over 50 sites now with nearly 10,000 patients who are enrolled in the consortium. So it really is at this point the largest prospective study of individuals who are at high risk for