Fast Five Quiz: HR-Positive/HER2-Negative Breast Cancer

Winston W. Tan, MD


September 14, 2021

About 5%-10% of breast cancers are hereditary, and the most common cause of hereditary breast cancer is a BRCA1/BRCA2 mutation. Women with inherited BRCA1 or BRCA2 mutations have about a 72% or 69% lifetime risk for breast cancer, respectively.

Some women with a BRCA1/BRCA2 mutation opt to have prophylactic double mastectomy. Such surgery can reduce the risk of developing breast cancer by up to 95%. Other options include:

Learn more about BRCA1/BRCA2 mutations.

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