BRCA1 & BRCA2 are tumor suppressor genes; mutations in either are transmitted in an autosomal dominant pattern. Loss of both copies of either BRCA1 or BRCA2 is just the 1st step in the process of potential carcinogenesis. In this session, we will review the pathophysiology of BRCA mutations and review the NCCN guidelines for breast and ovarian cancer screening. We will also review the surgical & chemoprophylactic management of the BRCA positive patient.