Dr. Marshall is a Professor of Oncology and Medicine, Associate Director of Clinical Research, and Director, Experimental Therapeutics and GI Oncology at Georgetown University. He also directs the Otto J. Ruesch Center for the Cure of Gastrointestinal Cancers at Georgetown, which was founded in 2009. Dr. Marshall received his training at Duke University, the University of Louisville, and Georgetown University. Following the completion of his medical oncology fellowship, he remained on the faculty of Georgetown University and has had a faculty appointment there since 1993. He focuses on clinical research activities within the Lombardi Comprehensive Cancer Center. Dr. Marshall is an internationally recognized expert in new drug development for GI cancer, with expertise in phase I, II, and III trial design, and has served as Principal Investigator for more than one hundred clinical trials. Administratively, he directs all clinical research activities within the Lombardi Comprehensive Cancer Center and the Lombardi/MedStar Research Network. While he has an interest in many areas of cancer research, his primary focus has been on the development of vaccines to treat cancer. This work has funded through a series of NIH grants and industry collaborations. Dr. Marshall has become an outspoken advocate for GI cancer patients and the importance of clinical research participation. Finally, Dr. Marshall has served as a mentor for many young clinical research investigators. He oversees a clinical research training program in the Experimental Therapeutics program which was established to ensure strong leadership in clinical research for the future.