The purpose of this phase I trial is to test the safety and cancer preventive effects of different doses of ONC201 in people with familial adenomatous polyposis (FAP) or a history of multiple polyps. People with familial adenomatous polyposis (FAP) or a history of multiple polyps are at higher than average risk of developing colorectal cancer. ONC201, now known as dordaviprone, is a drug that may stop cancer cells from growing. This drug has been shown in previous studies to cause cancer cell death but not harm normal cells. If successful, this study may help us develop a new option for colorectal cancer prevention.
A diagnosis of FAP AND/OR
Findings of either > 5 small (less than 1 cm) adenomas OR >= 3 with at least one >= 10 mm on most recent colonoscopy performed in the past 5 years
Be >= 18 years of age on day of signing informed consent
Have an Eastern Cooperative Oncology Group (ECOG) performance status =< 1 (Karnofsky >= 70%)
Prior history of hereditary nonpolyposis colorectal cancer (HNPCC), also known as Lynch syndrome
Participants may not be currently receiving any other investigational agents or have received any investigational agents within the past four weeks
Prior history of invasive colorectal cancer
Prior invasive active neoplasm that is progressing or requires active treatment within 3 years from registration. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer. Participants with a history of prior invasive neoplasm diagnosed and treated greater than 3 years form registration may be considered with consultation of the primary investigator