CAMBRIDGE, Mass., April 24, 2007 (PRIME NEWSWIRE) -- Infinity Pharmaceuticals, Inc. (Nasdaq:INFI), an innovative cancer drug discovery and development company, today announced that Infinity management will host a conference call on Tuesday, May 1, 2007 at 8:30 a.m. EDT. In the conference call, management will provide a business update, including implications of the proposed acquisition of MedImmune, Inc. (Nasdaq:MEDI) by AstraZeneca PLC (NYSE:AZN) for the companies' collaboration. Management will also discuss results for the quarter ended March 31, 2007