CAMBRIDGE, Mass.--(BUSINESS WIRE)--Gloucester Pharmaceuticals, Inc., an oncology focused biopharmaceutical company, announced today that it has appointed Alan Colowick, M.D. M.P.H. as Chief Executive Officer and as a member of the company’s Board of Directors. The company also announced that Jean Nichols, Ph.D. has been promoted to President and Chief Operating Officer. Dr. Nichols previously served as Executive Vice President and Chief Scientific Officer. In addition, Donald Hayden, formerly Executive Vice President and President, Americas, at Bristol-Myers Squibb Company, has been named Chairman of Gloucester’s Board of Directors.