HNPCC

To learn how well nitrous oxide cryoballoon ablation, a procedure that uses extreme cold to destroy abnormal tissue, works in treating flat duodenal adenomas (abnormal growths in the small intestine) in people with FAP or Lynch syndrome (HNPCC).

To characterize feasibility, safety, and/or preliminary efficacy of personalized strategies to adapt standard radiotherapy treatments to individual patient responses.

This study is a randomized, open-label, multi-center phase II trial evaluating the efficacy and safety of the becotatug vedotin in combination with pucotenlimab regimen in patients with advanced head and neck squamous cell carcinoma who are intolerant to platinum-based therapy.

Lynch syndrome (OMIM #120435) is the most common dominantly inherited colorectal cancer syndrome with an estimated prevalence of 1:270 individuals. It increases the lifetime risk of colorectal and endometrial cancer primarily, but it is associated with a high risk of other cancers (pancreas, stomach, ovarian, central nervous system, skin, among others). It is caused by a germline mutation in one of four DNA mismatch repair genes or a terminal deletion of the MSH2-adjacent gene EpCAM. Despite adherence to cancer surveillance programs, many patients still develop colorectal cancer and endometrial cancer. The Prospective Lynch Syndrome Database (PLSD) suggests that more frequent surveillance intervals do not significantly improve cancer risk reduction. The PLSD also revealed that the incidence of colorectal cancer in MLH1 and MSH2 carriers was even higher than previously expected, reaching as high as 41-36% among MLH1 carriers, regardless of ethnic background. The development of colorectal cancer despite surveillance is an unresolved question. Therefore, there is an unmet need for effective cancer prevention strategies.