Population-Based Study of the Risk of Second Primary Contralateral Breast Cancer Associated With Carrying a Mutation in BRCA1 or BRCA2.
PURPOSE: Women with breast cancer diagnosed early in life comprise a substantial portion of those tested for BRCA1/BRCA2 mutations; however, little information is available on the subsequent risks of contralateral breast cancer in mutation carriers. This study assessed the risk of subsequent contralateral breast cancer associated with carrying a BRCA1 or BRCA2 mutation. PATIENTS AND METHODS: In th