This is the final report in our four-part series on the cutting edge of research for treating and preventing breast cancer. Robert H. Vonderheide is a professor of medicine at the University of Pennsylvania’s Perelman School of Medicine and is the associate director of translational research at the Abramson Cancer Center there. He and Susan M. Domchek, MD, the Basser Professor in Oncology at the University of Pennsylvania, have been working together as Breast Cancer Research Foundation (BCRF) scientific invest…