WALTHAM, Mass.--(BUSINESS WIRE)--ImmunoGen, Inc. (Nasdaq: IMGN), a biopharmaceutical company that develops targeted anticancer therapeutics, announced today that presentations of clinical data for three product candidates employing its Targeted Antibody Payload (TAP) technology will be made at the 51st American Society of Hematology (ASH) Annual Meeting and Exposition to be held in New Orleans, LA, on December 5-8, 2009.