NEW HAVEN, Conn., Feb. 3, 2012 (GLOBE NEWSWIRE) -- Achillion Pharmaceuticals, Inc. (Nasdaq:ACHN), a leader in the discovery and development of small molecule drugs to combat the most challenging infectious diseases, today announced the promotion of Mr. Joseph Truitt to Senior Vice President of Business Development. Mr. Truitt maintains his position as Chief Commercial Officer and previously served as Vice President of Business Development.