ImmunoGen, Inc. Announces Webcast of Presentations at Upcoming Investor Conferences

WALTHAM, Mass.--(BUSINESS WIRE)-- ImmunoGen, Inc. (Nasdaq: IMGN), a biotechnology company that develops novel anticancer therapeutics using its proprietary antibody-drug conjugate (ADC) technology, today announced that the following presentations by Company management at upcoming investor conferences will be webcast:

• Credit Suisse Healthcare Conference
  November 13 at 4:00pm MST (6:00pm EST), Scottsdale, AZ
• Jefferies 2013 Global Healthcare Conference
  November 21 at 1:40 pm GMT (8:40am EST), London, England
• Oppenheimer 24^th Annual Conference
  December 11 at 1:00 pm EST, New York, NY

The webcasts will be accessible live through the "Investor Information" section of the Company's website, www.immunogen.com; a replay will be available at the same location for approximately a week.

About ImmunoGen, Inc.

ImmunoGen develops targeted anticancer compounds with its well-tested ADC technology, which uses a tumor-targeting antibody to deliver one of the Company's proprietary cancer-cell killing agents specifically to tumor cells. The most advanced compound with ImmunoGen's ADC technology is Roche's Kadcyla^®, which is marketed in the US by Genentech and is also gaining approvals internationally. Consistent with several ImmunoGen and partner compounds, Kadcyla utilizes ImmunoGen's thioether (SMCC) linker and DM1 cytotoxic agent; ImmunoGen manufactured Kadcyla for non-pivotal clinical testing and developed the pivotal manufacturing process on behalf of Genentech. More information about ImmunoGen can be found at www.immunogen.com.

Kadcyla^® is a registered trademark of Genentech, Inc., a member of the Roche Group.

For Investors:
ImmunoGen, Inc.
Carol Hausner, 781-895-0600
Executive Director, Investor Relations and Corporate Communications
info@immunogen.com
or
For Media:
The Yates Network
Barbara Yates, 781-258-6153

Source: ImmunoGen, Inc.

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