Dr. Ellen Sidransky is Chief of the Section of Molecular Neurogenetics \in the National Human Genome Research Institute at NIH. Dr. Sidransky graduated from Brandeis University, received her M.D. from Tulane University and trained in pediatrics at Northwestern University, and in clinical genetics at the NIH. Her research interest includes clinical and basic aspects of Gaucher disease and Parkinson disease, genotype/phenotype correlation and genetic modifiers, clinical insights from mouse models, and treatment strategies for the lysosomal storage disorders. The author of over 200 publications, sheplayed a lead role in establishing the association between glucocerebrosidase and parkinsonism.