LEXINGTON, Mass., Sept. 22, 2011 (GLOBE NEWSWIRE) -- Agenus Inc. (Nasdaq:AGEN), a leading developer of therapeutic vaccines for cancer and infectious diseases, today announced that Dr. Garo Armen, Chairman and CEO, is scheduled to present at the JMP Securities Healthcare Conference at 2:00 p.m. ET Wednesday, September 28, 2011 in New York City.