News

January 22, 2009
ImmunoGen, Inc. Announces Conference Call to Discuss its Second Quarter Fiscal Year 2009 Financial Results

WALTHAM, Mass.--(BUSINESS WIRE)--Jan. 22, 2009--ImmunoGen, Inc. (Nasdaq:IMGN) will host a conference call at 4:30 pm ET on Thursday, January 29, 2009 to discuss the Company's financial results for the three-month period ended December 31, 2008 - the second quarter of ImmunoGen's 2009 fiscal year. Management also will provide an update on the Company.

To access the live call by phone, dial 913-981-4900. No passcode is required. The call also may be accessed through the Investor Information section of the Company's website, www.immunogen.com. Following the live webcast, a replay of the call will be available at the same location through February 5, 2009.

About ImmunoGen, Inc.

ImmunoGen, Inc. develops targeted anticancer therapeutics using its expertise in cancer biology, monoclonal antibodies and the creation and attachment of potent cell-killing agents. The Company's Tumor-Activated Prodrug (TAP) technology uses antibodies to deliver one of ImmunoGen's proprietary cell-killing agents specifically to cancer targets. In addition to the Company's proprietary clinical pipeline, ImmunoGen collaborators Genentech, sanofi-aventis, Biogen Idec, and Biotest also are testing TAP compounds in the clinic, and the naked antibody AVE1642 is in clinical trials through the Company's collaboration with sanofi-aventis. Other ImmunoGen collaborative partners include Bayer HealthCare and Amgen.

CONTACT:
ImmunoGen, Inc.
Executive Director, Investor Relations and Corporate Communications
Carol Hausner, 781-895-0600
info@immunogen.com

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