Dr. Warren J. Leonard National Institutes of Health, USA

Warren J. Leonard MD is an NIH Distinguished Investigator, Chief, Laboratory of Molecular Immunology, and Director, Immunology Center at the National Heart, Lung, and Blood Institute, NIH. He received his AB in mathematics from Princeton and MD from Stanford. After residency at Barnes Hospital, he had post-doctoral training in the... read moreNational Cancer Institute. He is best known for studies of Gamma c-family cytokines, particularly IL-2 and IL-21, and for finding the genetic cause of human X-linked severe-combined immunodeficiency and
discovering JAK3-deficient and IL7R-deficient SCID. His current research relates to the biology, signaling, and gene regulation of gamma c-family cytokines.