Phase 2 Study: OBI-833/OBI-821 Maintenance for Globo H+ Advanced Biliary Tract Cancer After Gemcitabine/Cisplatin

"OBI-833 is a glycoconjugate that consists of Globo H, a unique tumor-associated carbohydrate antigen (TACA), covalently linked to cross-reacting material 197 (CRM197), an inactive and nontoxic form of diphtheria toxin (DT) acting as the carrier protein.~OBI-821 is a saponin-based adjuvant derived from the bark of the Quillaja saponaria Molina tree. It is a purified saponin adjuvant structurally similar to adjuvant QS-21. The OBI-833/OBI-821 combination represents a carbohydrate-conjugate vaccine combined with an immune adjuvant, intended to serve as an active cancer immunotherapy."