Marilynn Marchione FILE - In this May 22, 2015 photo, a woman gets a mammogram at the University of Michigan Cancer Center in Ann Arbor, Mich. Two large studies, published Wednesday, Jan. 20, 2021, by the New England Journal of Medicine, give a much sharper picture of which inherited mutations raise the risk of breast cancer for women without a family history of the disease, and how common these flawed genes are in the general population. Doctors say the results can help women make better decisions about screening, preventive surgery or other steps. (Kimberly P. Mitchell/Detroit Free Press via AP, File) January 20, 2021 - 2:03 PM