Edward Donnall Thomas

Edward Donnall Thomas

American physician who in 1990 was corecipient (with Joseph E. Murray) of the Nobel Prize for Physiology or Medicine for his work in transplanting bone marrow from one person to another--an achievement related to the cure of patients with leukemia and other blood cancers or blood diseases.
Thomas studied at the University of Texas (B.A., 1941; M.A., 1943) and the Harvard Medical School (M.D., 1946). He served at a few hospitals and a research centre before becoming a professor of medicine at Columbia University's College of Physicians and Surgeons (1955-63) and the University of Washington School of Medicine (from 1963) in Seattle, where he was also associated with the Fred Hutchinson Cancer Research Center.

In 1956 Thomas performed the first successful bone marrow transplant between two humans: a leukemic patient and his identical twin. The recipient's body accepted the donated marrow and used it to make new, healthy blood cells and immune system cells. Thomas adopted methods to match the tissues of donor and recipient closely enough to minimize the latter's rejection of the former's marrow, and he also developed drugs to suppress the immune system. In 1969 these refinements enabled him to perform the first successful bone marrow transplant in a leukemia patient from a relative who was not an identical twin. Before his work, leukemia had invariably been a fatal disease. By 1990, as a result of his research, more than half of all leukemia patients could be expected to survive.

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