WALTHAM, Mass.--(BUSINESS WIRE)--ImmunoGen, Inc. (Nasdaq: IMGN), a biotechnology company that develops antibody-based anticancer products, today announced the presentation of positive initial clinical data with the Company’s IMGN901 anticancer compound when used as part of a standard combination regimen to treat relapsed multiple myeloma. Encouraging updated data also were reported for the compound when used as monotherapy in patients with extensively pre-treated multiple myeloma. These findings were reported at the 52nd ASH Annual Meeting and Exposition taking place in Orlando, Florida.