Carrie is the Chief Medical Officer of Cellectis, where she is responsible for overseeing clinical research and development. Previously she held several senior leadership positions, including Vice President of Global Clinical Research and Development, Therapeutic Area Head for Myeloid Diseases at Celgene, Executive Director of Clinical Sciences Oncology at Regeneron Pharmaceuticals, and Senior Medical Director of Hematology and Oncology at Hoffman-La Roche (Roche Pharmaceuticals). Prior to her industry career, Dr. Brownstein practiced pediatric hematology and oncology at New York Presbyterian Columbia University and Mount Sinai Medical Center and completed her internship and residency at Columbia Presbyterian Medical Center in New York and her subspecialty training at Memorial Sloan-Kettering Cancer Center. Dr. Brownstein received her M.D. from Tufts University School of Medicine and received her A.B. in Psychology from the University of Michigan.