Dr. Tifft received her MD and PhD from the University of Texas Health Science Center and Graduate School of Biomedical Sciences at Houston, completed pediatric residency training at Johns Hopkins Hospital, and clinical genetics fellowship at the National Institutes of Health. After 18 years at the Children’s National Health System, Dr. Tifft was recruited to the NHGRI/NIH as Deputy Clinical Director and Director of the Pediatric NIH Undiagnosed Diseases Program. Her research interests include the natural history and treatment of lysosomal storage disorders affecting the central nervous system, particularly GM1 & GM2 gangliosidosis.