On Mar. 5, the U.S. Food and Drug Administration (FDA) awarded Orphan Drug designation to Acceleron Pharma’s ACE-083, a locally acting muscle agent, for treating Charcot-Marie-Tooth disease (CMT). Delivered by intramuscular injection, ACE-083 is based on the naturally occurring protein follistatin and is designed to enhance the body’s own promoters of muscle growth, specifically in . . .