Mark Rothera has been appointed president and chief executive officer, Orchard Therapeutics. Mr. Rothera has 28 years of experience in the biopharmaceutical industry, including transitioning multiple emerging biotechnology companies from R&D stage to commercialization. During his career, he has focused on bringing novel therapies to market for rare diseases, and has launched seven orphan drugs.  Mr. Rothera recently served as chief commercial officer of PTC Therapeutics, where he helped t...