Infinity Announces Second Quarter 2009 Results Conference Call

CAMBRIDGE, Mass., July 30, 2009 (GLOBE NEWSWIRE) -- Infinity Pharmaceuticals,
Inc. (Nasdaq:INFI), an innovative cancer drug discovery and development company,
announced today that Infinity management will host a conference call on
Thursday, August 6, 2009 at 8:30 a.m. EDT. In the conference call, management
will review recent research and development and business highlights including
Infinity's second quarter 2009 financial results.

To participate in the conference call, please dial 1-888-857-6932 (domestic) and
1-719-457-2615 (international) five minutes prior to start time. A live webcast
of the conference call, including the presentation slides, can be accessed in
the Investors/Media section of Infinity's website at www.infi.com. An archived
version of the webcast will be available on Infinity's website for 30 days.

About Infinity Pharmaceuticals, Inc.

Infinity is an innovative cancer drug discovery and development company seeking
to discover, develop, and deliver to patients best-in-class medicines for the
treatment of cancer and related conditions. Infinity combines proven scientific
expertise with a passion for developing novel small molecule drugs that target
emerging cancer pathways. Infinity's two most advanced programs in Hsp90
inhibition and Hedgehog signaling pathway inhibition are evidence of its
innovative approach to oncology drug discovery and development. For more
information on Infinity, please refer to the company's website at
http://www.infi.com.

-0-
CONTACT: Infinity Pharmaceuticals, Inc.
Monique Allaire
617-453-1105
Monique.Allaire@infi.com
http://www.infi.com