Katherine Nathanson of the Perelman School of Medicine talks about how the differences in gene mutations affect the risks for types of cancer.

http://www.newsworks.org/index.php/nwtonight/item/80455-breast-vs-ovarian-cancer-risks-vary-for-women-with-different-brca-mutations-penn-study-finds?linktype=hp_nwt April 8, 2015 Newsworks (WHYY-FM)