Antigenics to Present at Acumen Biofin Rodman & Renshaw 9th Annual Healthcare Conference

NEW YORK — November 2, 2007 — Antigenics Inc. (NASDAQ: AGEN) today announced that Garo Armen, PhD, the company’s chairman and chief executive officer, will present at the Acumen BioFin Rodman & Renshaw 9th Annual Healthcare Conference at the New York Palace Hotel at 3:00 p.m. ET on Wednesday, November 7.

Dr. Armen will provide an overview of the company and its priority development programs, including Oncophage^® (vitespen) therapeutic cancer vaccine; QS-21™ vaccine adjuvant; AG-707 therapeutic vaccine for genital herpes infection; and Aroplatin™ platinum agent for cancers.

The audio portion of the presentation will be webcast live and available subsequently by replay on the Rodman & Renshaw website at www.wsw.com/webcast/rrshq12/agen. The replay of the webcast will be available for approximately 90 days. The link to the audio replay and presentation slides will also be available on the Antigenics website, www.antigenics.com.

Antigenics is a biotechnology company working to develop treatments for cancers and infectious diseases.