LEXINGTON, Mass.--(BUSINESS WIRE)--Antigenics Inc. (NASDAQ: AGEN) today announced that the company has signed an amended and restated license agreement for the use of the QS-21 adjuvant in a vaccine under development by JANSSEN Alzheimer Immunotherapy, a company which has acquired substantially all of the assets and rights of Elan related to its Alzheimer’s Immunotherapy Program (AIP).
