Darren Sledjeski, Ph.D., is chief of the Genetic Mechanisms Branch in the Division of Genetics and Developmental Biology, where he administers research grants in the areas of transcription mechanisms and symbiotic relationships and community ecology. He was formerly a challenge manager and scientific initiatives manager in the National Institute of Allergy and Infectious Diseases' Office of Initiative Development. Prior to that, Sledjeski was a scientific review officer in the Institute’s Office of Scientific Review. Sledjeski came to NIH from the University of Toledo Medical Center, where he was first an assistant and later an associate professor in the department of microbiology and immunology. He earned a B.S. in biology from the College of William and Mary and a Ph.D. in microbiology from the University of Maryland, College Park. Sledjeski conducted postdoctoral research at NCI.