ImmunoGen, Inc. Announces Conference Call at 8:30 am ET October 11, 2010 to Discuss New Collaboration & Updated Guidance for ...

ImmunoGen, Inc. (Nasdaq: IMGN), a biotechnology company that develops targeted antibody-based anticancer products, today announced that it will host a conference call at 8:30 am ET on Monday, October 11, 2010 to discuss the Company's new collaboration announced this morning and its updated financial guidance for ImmunoGen’s fiscal year ending June 30, 2011.

To access the live call by phone, dial 913-312-0658. Passcode is 4078495. 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 October 18, 2010.

About ImmunoGen, Inc.

ImmunoGen, Inc. develops targeted anticancer therapeutics using the Company’s expertise in tumor biology, monoclonal antibodies and potent cancer-cell killing agents. The Company’s TAP technology uses monoclonal antibodies to deliver one of ImmunoGen’s proprietary cancer-cell killing agents specifically to tumor cells. There are currently seven TAP compounds in the clinic, with a wealth of clinical data reported with the technology. ImmunoGen collaborative partners include Amgen, Bayer Schering Pharma, Biogen Idec, Biotest, Genentech (a member of the Roche Group), Novartis, and sanofi-aventis. The most advanced compound using ImmunoGen’s TAP technology, T-DM1, is in Phase III testing through the Company’s collaboration with Genentech. More information about ImmunoGen can be found at www.immunogen.com.