Dr. Valle is the Henry J. Knott Professor and Director of the McKusick-Nathans Department of Genetic Medicine with joint appointments in the Departments of Pediatrics Molecular Biology & Genetics and Ophthalmology at Johns Hopkins University School of Medicine.  His research interests include all aspects of human genetic disease including inborn errors of metabolism, inherited retinal degenerations, rare Mendelian disorders and identification and identification of genetic factors that contribute risk for neuropsychiatric diseases such as schizophrenia.