Dr. Tanuja Chitnis is a Neurologist specializing in MS and serves as the Medical Director of the CLIMB Natural History study at the Partners MS Center, Brigham and Women’s Hospital (BWH) which follows over 2400 MS patients longitudinally. Here she oversees a team of analysts and postdoctoral fellows working to understand the causes, heterogeneity and response to treatment in MS patients. In addition to her clinical roles, she is an Associate Professor of Neurology at Harvard Medical School and has a research appointment as a Scientist within the Ann Romney Center for Neurologic Diseases at BWH. Having over 200 publications and reviews related to MS and demyelinating disorders, she heads several projects focusing on predictors and modulators of disease course in MS patients of all ages, including clinical and neuroimaging features as well as immunological and hormonal markers. In her role as the founding Director of the Partners Pediatric MS Center at MassGeneral Hospital for Children and the Chair of the International Pediatric MS Study Group, she has led several initiatives in the study of MS in children. Throughout her career, primary scientific contributions have been in immune mechanisms in MS, pediatric MS research, the CLIMB observational cohort study, hormonal mechanism in MS, and Neuromyelitis Optica (NMO).