MD, Paris Children’s Hospital Necker; PhD, Pasteur Institute, Paris, France;postdoctoral Fellowship in Medical Genetics, University of California, Los Angeles (UCLA). With UCLA: currently, Chief of Medical Genetics, Co-Director, Clinical Genomics Center; Director, Center for Gender-Based Biology. Concurrently, Director, Center for Genetic Medicine Research, Children's National Medical Center. Explores the genetics of sexual development, focusing on the molecular mechanisms of gonad development, as well as on the genetic determinants of brain sexual differentiation, including sexual orientation and gender identity. Has published extensively in the field of sexual development. Has identified a large number of mutations in sex-determining genes, and developed animal models with atypical sexual development. Recipient of numerous awards, including from the National Institute of Health, the March of Dimes, the Doris Duke Charitable Foundation and the Society for Pediatric Research. Fellow, American College of Medical Genetics. Member: International Olympic Committee on Hyperandrogenism in Athletes; Board of the Scientific Counselors, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD).