If you have a BRCA mutation, your lifetime risk of breast cancer ranges from 50 to 85 percent, versus 13 percent for an “average risk” woman. Your risk of ovarian cancer is higher as well, ranging anywhere from 16 to 60 percent, versus just 1-2 percent for the average woman. (The range is due to different findings from different studies, as well as the fact that BRCA1 and BRCA2 are associated with different levels of risk.) In addition, if you have a BRCA mutation, you are more likely to develop these cancers before age 50.
Your genetic counselor can help you better understand your individual level of risk.
Reviewed by Jill Stopfer, MS