In English | En español
Questions About Cancer? 1-800-4-CANCER

NCI Drug Dictionary


immunological adjuvant OPT-821 
A purified, natural saponin isolated from the soapbark tree Quillaja saponaria Molina with potential immunoadjuvant activity. When co-administered with vaccine peptides, OPT-821 may increase the antibody and cytotoxic T-cell responses against the targeted antigen(s). Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Code name:OPT-821