Daniel C. Brennan, MD, FACP, is the Alan A. and Edith L. Wolff Professor of Renal Diseases and the Director of Transplant Nephrology at Washington University School of Medicine in St. Louis, Missouri. Dr. Brennan’s research interests are viral infections, induction immunosuppression therapy, pharmacoeconomic and outcome research in transplantation and islet transplantation. He has written more than 275 original publications and several textbook chapters in these areas.