Murray Stewart has been appointed chief medical officer of Rhythm Pharmaceuticals (NASDAQ: [[ticker:RYTM]]). Stewart joins Boston-based Rhythm from Novelion Therapeutics (NASDAQ: [[ticker:NVLN]]), where he was head of R&D. His experience also includes 18 years at GlaxoSmithKline (NYSE: [[ticker:GSK]]), where he held several roles, including chief medical officer. Last year, Rhythm raised $120 million in an IPO to finance continued work on setmelanotide, a late-stage drug candidate developed to treat genetic obesity disorders.