Ivan Maillard, MD, PhD, is a physician-scientist serving as the Vice-Chief for Research and a Professor of Medicine in the Division of Hematology/Oncology at the University of Pennsylvania’s Perelman School of Medicine. Prior to this appointment, Dr. Maillard trained as a hematologist in Switzerland and at the University of Pennsylvania. He then worked as an Assistant Professor and an Associate Professor at the University of Michigan. His clinical interests are in the care of patients with leukemia and lymphoma. Dr. Maillard’s research focus is graft-versus-host disease, which refers to the damaging immune responses that patients can experience after bone marrow transplantation. Dr. Maillard runs a lab at Penn that researches new ways to mitigate graft-versus-host disease by inhibiting signals received by “Notch” receptors in immune cells. He is also interested in the role of Notch signaling in cancer. Dr. Maillard is a proud former LLS scholar. His work is supported by LLS and the NIH.