Gregg Semenza, M.D., Ph.D. is one of today’s pre-eminent researchers on the molecular mechanisms of oxygen regulation; Dr. Semenza has led the field in uncovering how cells adapt to changing oxygen levels. He has identified and studied the HIF-1 (hypoxia-inducible factor 1) protein, which controls genes in response to changes in oxygen availability. Dr. Semenza received his M.D. and Ph.D. from the University of Pennsylvania, completed his residency in pediatrics at Duke University Medical Center and postdoctoral research in medical genetics at Johns Hopkins and is on the faculty at Johns Hopkins since 1990. Participation by Dr. Semenza as a Scientific Advisory Board member does not constitute endorsement by the Johns Hopkins University or the Johns Hopkins Hospital and Health System.