Dr. Cox is the Chief Medical Officer at Editas Medicine. Previously, he held senior clinical development roles at Sanofi Genzyme (formerly Genzyme Corporation) for over 15 years, most recently as Vice President of Rare Disease Clinical Development. He was instrumental in the development and approval of several treatments for lysosomal storage disorders, including the enzyme replacement therapies Aldurazyme® (iduronidase) for Mucopolysaccharidosis type I in 2003 and Elaprase® (idursulfase) for Mucopolysaccharidosis type II in Japan and the Asia Pacific region in 2007, and the substrate reduction therapy Cerdelga® (eliglustat) for Gaucher disease type 1 in 2014. Dr. Cox received his M.D. and Ph.D. from the University of California at San Diego and his B.A. from Harvard College. He continues to serve part-time in his role as Staff Physician in Genetics at Boston Children’s Hospital, where he previously completed an internship and residency in pediatrics followed by clinical and post-doctoral research fellowships in genetics and was Director of the Medical Genomics Mapping Facility. Dr. Cox is also an Instructor in Pediatrics at Harvard Medical School.