Harold Weintraub (1945–1995) earned a bachelor’s degree from Harvard College and an M.D.-Ph.D. from the University of Pennsylvania. He conducted postdoctoral research with Sydney Brenner and Francis Crick at the Medical Research Council in Cambridge, England, before joining the faculty of Princeton University. Weintraub moved to the Fred Hutchinson Cancer Research Center in Seattle in 1978. He is best known for the discovery of the myoD gene, which encodes a master regulator of muscle cell differentiation. He was a member of the National Academy of Sciences and was a Howard Hughes Medical Institute Investigator from 1990 to 1995.