WALTHAM, Mass.--(BUSINESS WIRE)--ImmunoGen, Inc. (Nasdaq:IMGN), a biotechnology company that develops targeted anticancer products, today announced that will host a conference call at 4:30 pm ET on Thursday, April 29, 2010 to discuss the Company’s financial results for the three-month period ended March 31, 2010 – the third quarter of ImmunoGen’s 2010 fiscal year. Management also will provide an update on the Company.