Breast cancer is the most common cancer among American women (American Cancer Society), but only 5-10 percent of breast cancer cases are hereditary. Of those cases, roughly 20-25 percent are linked to mutations in the BRCA1 and BRCA2 genes (BRCA stands for BReast CAncer susceptibility). View the infographic above for more on the genetics of breast cancer. For more information on breast cancer, visit the website for Dana-Farber’s Susan F. Smith Center for Women’s Cancers Breast Oncology Program: http://www.dana-farber.org/Adult-Care/Treatment-and-Support/Breast-Cancer.aspx