The purpose of this study was to identify new inherited genetic mutations that increase breast cancer risk. The research team analyzed blood samples from two groups of survivors: women with a strong family history of breast and/or ovarian cancer and women who had early onset breast cancer but no family history. The researchers wanted to enroll up to 400 volunteers from the Army of Women (AOW) from anywhere in the U.S. The Call to Action for this study was sent to AOW members on October 1, 2014. The researchers closed enrollment on July 28, 2016, after the AOW provided them with 339 women who were interested in enrolling in the study.