Geoffrey currently serves as the Director of the Early Drug Development Center, Clinical Director of the Center for DNA Damage and Repair, and an Institute Physician at the Dana-Farber Cancer Institute. His research focuses on the investigation of the role of cell cycle and DNA repair-related proteins in a variety of solid tumors.He is also a Professor of Medicine at Harvard Medical School and serves as the Principal Investigator on the National Cancer Institute/Clinical Trials Evaluation Program (NCI/CTEP) Early Therapeutics UM1 Grant for Dana-Farber/Harvard Cancer Center. Geoffrey is a member of the NCI Investigational Drug Steering Committee. He holds PhD and MD degrees from Cornell University, and completed his postgraduate training in internal medicine at Beth Israel Hospital, Boston,followed by a fellowship in medical oncology at the Dana-Farber Cancer Institute.