( oughour survival data are encouraging...)Data from Investigator-Sponsored Trial of Oncophage Cancer Vaccine,in Glioma Presented at American Association of Neurological,Surgeons Annual Meeting,Health

ough our survival data are encouraging, a larger Phase 2 study will be required to determine the benefit of Oncophage for patients with recurrent glioma. The consistent, tumor-specific immune response seen in these patients suggests that in the right patient population, Oncophage could have a significant impact."

About Brain and Spinal Cord Tumors

Glioma is a cancer affecting the central nervous system that begins in glial cells (connective tissue cells that surround and support nerve cells). Malignant glioma is currently a fatal disease. The American Cancer Society estimates that 20,500 malignant tumors of the brain or spinal cord will be diagnosed during 2007 in the United States, and that about 12,740 people will die from these tumors. Brain and spinal cord tumors account for about 1 percent of all cancers and 2 percent of all cancer-related deaths.

About UCSF

UCSF is a leading university that consistently defines health care worldwide by conducting advanced biomedical research, educating graduate students in the life sciences, and providing complex patient care. For more information, please visit www.ucsf.edu.

About Antigenics

Antigenics (NASDAQ: AGEN) is a biotechnology company working to develop treatments for cancers and infectious diseases. The company's investigational product portfolio includes Oncophage(R) (vitespen), a patient-specific therapeutic cancer vaccine being evaluated in several indications; Aroplatin(TM) (L-NDDP), a liposomal, third-generation platinum chemotherapeutic; AG-707, a therapeutic vaccine for the treatment of genital herpes; and QS-21, an adjuvant being evaluated by Antigenics' corporate partners in several late-stage clinical trials. For more information, please visit www.antigenics.com.

This press release contains forward-looking information, including statements regarding the potential safety and activity of Oncophage in patients with glioma, publication plans and future clinical t
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