NEW YORK--(BUSINESS WIRE)--Antigenics Inc. (NASDAQ: AGEN) today announced that Oncophage® (vitespen) has been granted a positive recommendation for orphan drug designation for the treatment of glioma by the Committee for Orphan Medical Products (COMP) of the European Medicines Agency (EMEA). This designation provides Antigenics with, among other benefits, 10 years of potential market exclusivity if the product is approved for marketing in the European Union (EU).