Agenus to Present at BIO CEO & Investor Conference

Wed Feb 6, 2013 8:15am EST

* Reuters is not responsible for the content in this press release.

LEXINGTON, Mass., Feb. 6, 2013 (GLOBE NEWSWIRE) -- Agenus Inc. (Nasdaq:AGEN), a developer of
therapeutic vaccines for cancer and infectious diseases, today announced that the company will be
presenting at the 15th Annual BIO CEO & Investor Conference, which will be held at the Waldorf
Astoria Hotel in New York City.

Dr. Garo Armen, Chairman and CEO of Agenus, will present a corporate overview on Monday, February
11th at 11:30 am EST in the East Foyer Room.

Between Agenus and its partners, 19 programs are in clinical development. Agenus' QS-21 Stimulon®
adjuvant1 is being studied in clinical trials for 17 vaccine indications. They include:

* Phase 3: GSK's RTS,S for malaria2
* Phase 3: GSK's MAGE-A3 cancer immunotherapy for selected patients with resected melanoma2
* Phase 3: GSK's MAGE-A3 cancer immunotherapy for selected patients with resected non-small cell
lung cancer2
* Phase 3: GSK's HZ/su for shingles2
* Phase 2: Janssen's ACC-001 for Alzheimer's disease

Agenus pipeline programs include:

* Phase 2 : HerpV (contains QS-21 Stimulon) for genital herpes
* Phase 2: Prophage Series G-100 for newly diagnosed glioma
* Phase 2: Prophage Series G-200 for recurrent glioma

Saponin Platform: QS-21 Stimulon



Agenus' licensees include GlaxoSmithKline and Janssen Alzheimer Immunotherapy. Agenus is generally
entitled to receive milestone payments as QS-21 Stimulon-containing programs advance, as well as
royalties for 10 years after commercial launch, with some exceptions.

Heat Shock Protein Platform: Recombinant Series HerpV

HerpV is the most advanced HSV-2 therapeutic vaccine currently in clinical development for the
treatment of genital herpes. A Phase 2 study measuring the effect of vaccination on viral shedding
in individuals infected with HSV-2 is underway. Data results for this study are anticipated in
Q4'13. Experts in HSV-2 clinical research believe that a reduction in viral shedding could
translate into the clinical benefit of a reduction in recurrent outbreaks.

Heat Shock Protein Platform: Prophage Series G

The Prophage Series G vaccines (HSPPC-96; vitespen) are being studied in two different settings of
glioma: newly diagnosed and recurrent disease. Glioma is the deadliest form of brain cancer with
an average survival of six to 14 months.

Web Cast Information                                                                              

The live and archived webcast of the company presentation will be accessible from the company's
website at
. Please log in approximately 5-10 minutes before each event to ensure a timely connection. The
archived replay will be available on the Agenus website for one month following the conference.

About Agenus                                                                                      

Agenus Inc. is a biotechnology company working to develop treatments for cancers and infectious
diseases. The company is focused on immunotherapeutic products based on strong platform
technologies with multiple product candidates advancing through the clinic, including several
product candidates that have advanced into late-stage clinical trials through corporate partners.
For more information, please visit

The Agenus logo is available at

Forward-Looking Statement                                  

This press release contains forward-looking statements, including statements regarding up-coming
presentations and technologies, programs, and activities of the company and its licensees. These
forward-looking statements are subject to risks and uncertainties that could cause actual results
to differ materially. These risks and uncertainties include, among others, the factors described
under the Risk Factors section of our Quarterly Report on Form 10-Q filed with the Securities and
Exchange Commission for the period ended September 30, 2012. Agenus cautions investors not to
place considerable reliance on the forward-looking statements contained in this release. These
statements speak only as of the date of this document, and Agenus undertakes no obligation to
update or revise the statements. All forward-looking statements are expressly qualified in their
entirety by this cautionary statement. Agenus' business is subject to substantial risks and
uncertainties, including those identified above. When evaluating Agenus' business and securities,
investors should give careful consideration to these risks and uncertainties.

1. QS-21 Stimulon adjuvant and the related agreements, and HerpV are assets of Antigenics Inc., a
wholly owned subsidiary of Agenus Inc.

2. QS-21 Stimulon is a component of certain GSK adjuvant systems.

Stimulon is a registered trademark of Agenus Inc. and its subsidiaries.

CONTACT: Media and Investor Contact:
         Jonae R. Barnes
         Vice President
         Investor Relations and
         Corporate Communications