Adenomatous Polyposis Syndromes Cancer Risks

Patients testing positive for an APC gene mutation have up to a 100% lifetime risk of developing colorectal cancer and a slightly increased risk for other cancers.85 Specific Specific risk percentages for patients who have an APC mutation appear below. Patients who have MYH­-associated polyposis (MAP) have up to an 80% risk of developing colorectal cancer.281

Cancers Associated with FAP and AFAP