QS-21 is an investigational adjuvant, which is a substance added to vaccines and other immunotherapies that is designed to enhance the body’s immune response to the antigen contained within the treatment. It is the leading member of the Stimulon family of adjuvants. As a vaccine additive, it is currently being evaluated in clinical trials in a variety of disease areas by Antigenics.
Investigated for use/treatment in genital herpes, HIV infection, hepatitis (viral, B), influenza, malaria, melanoma, and viral infection.
National Institutes of Health Clinical Center, 9000 Rockville Pike, Bethesda, Maryland, United States
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