Gary Koretzky



Gary Koretzky, MD, PhD is Professor of Medicine at Weill Cornell Graduate School.  Previously, he was the Francis C. Wood Professor of Medicine, Vice Chair and Chief Scientific Office of the Department of Medicine, Investigator and Director of the Signal Transduction Program of the Abramson Family Cancer Research Institute at the University of Pennsylvania.

Dr. Koretzky received his AB from Cornell University (’78) and obtained his MD and PhD (Immunology) degrees at the University of Pennsylvania (’84).  Dr. Koretzky then pursued clinical training in Internal Medicine and Rheumatology at the University of California at San Francisco. He re-entered the laboratory as a postdoctoral fellow, examining the molecular events associated with T cell activation. Dr. Koretzky moved to the University of Iowa in 1991 where he continued his research examining the biochemistry and molecular biology of signal transduction in hematopoietic cells until he moved to the University of Pennsylvania in 1999.  

Koretzky’s research aims to better understand the signal transduction events that occur following engagement of the T cell antigen receptor.  He has been continuously funded by the National Institutes of Health since establishing his independent research group, as the laboratory has expanded its interests to study more globally the molecular events important for immune cell development, differentiation and function.  Initial studies focused on the CD45 tyrosine phosphatase as a positive regulator of immunoreceptor signaling.  This work led naturally to an examination of the key biochemical events that occur following receptor engagement.  The Koretzky lab approach was to identify novel regulators of signal transduction following T cell receptor ligation with studies leading to the isolation, characterization, and molecular cloning of several adapter molecules, which are critical for integration of signaling pathways.  The laboratory has identified 3 such molecules including SH2 domain-containing leukocyte protein of 76 kDa (SLP-76), adhesion and degranulation-promoting adapter protein (ADAP) and promyelocytic leukemia RARa-regulated adapter molecule-1 (PRAM-1).  There are ongoing projects studying the role of each of these molecules not only in T cells but also in other hematopoietic cells.  In addition to studies of these positive regulators of immune signaling, the Koretzky laboratory has also had a long standing interest in signals that interfere with activation events in T cells.  This interest led to studies of FAS and FAS ligand and to the role of diacylglycerol kinases as terminators of lymphocyte activation.

Dr. Koretzky has published more than 200 research articles.  He is a past President of the American Society of Clinical Investigation (2000) and Councilor of the Association of American Physicians (2008-2012), is a Fellow of the American Association for the Advancement of Science (2004), a member of the Institute of Medicine of the National Academies (2008), a Fellow of the American Academy of Arts & Sciences (2012) and serves as the Editor-in-Chief of Immunological Reviews (2002-present).

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