Sir Peter John Ratcliffe is a British Nobel Laureate physician-scientist who is trained as a nephrologist. Peter is the Director for the Target Discovery Institute within the Nuffield Department of Medicine at Oxford University and Director of Clinical Research at Francis Crick Institute, London
Ratcliffe has received a number of awards, accolades, and honours for his seminal work on hypoxia. He is known for his research into the regulation of erythropoietin, a hormone that stimulates red blood cell production in response to low blood oxygen levels, and for his research into the mechanisms cells use to sense oxygen. His discoveries pertaining to cellular oxygen-sensing mechanisms earned him a share of the 2019 Nobel Prize for Physiology or Medicine (shared with American scientists William G. Kaelin, Jr., and Gregg L. Semenza).