Dr. Sumner is a Professor of Neurology and Neuroscience at Johns Hopkins University School of Medicine. She received her BA from Princeton University and her MD from the University of Pennsylvania School of Medicine. She completed her internal medicine internship and neurology residency at the University of California, San Francisco and her neuromuscular fellowship at Johns Hopkins School of Medicine. Her scientific training included a Neurogenetics fellowship at the National Institute of Neurological Disorders and Stroke. Dr. Sumner cares for patients with inherited neuromuscular diseases and co-directs the Johns Hopkins SMA and CMT clinics. Dr. Sumner’s research focuses on the genetic and cellular pathogenesis of inherited motor neuropathies/neuronopathies with particular attention to identification of disease genes, characterization of molecular and cellular mechanisms underlying disease pathogenesis, and preclinical development of therapeutics. She has served as an advisor to SMA nonprofit foundations, government and private companies involved in therapeutics development for SMA. She is the coeditor of the only comprehensive book on SMA: Spinal Muscular Atrophy Disease Mechanisms and Therapy.