Dr. Letai received his MD and PhD from the University of Chicago. He completed his residency in internal medicine at Brigham and Women's Hospital, and a fellowship in hematology and oncology at DFCI. He did his postdoctoral research training in the laboratory of Dr. Stanley Korsmeyer. Dr. Letai's research focuses on the mechanisms by which cancer cells evade death, and on the application of that knowledge to the selective killing of cancer cells. He joined the faculty of DFCI and Harvard Medical School in 2004.