NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

anti-globo H/MMAE antibody-drug conjugate OBI 999
An antibody-drug conjugate (ADC) composed of OBI-888 (OBI 888), a humanized monoclonal antibody directed against the tumor-associated antigen (TAA) globohexaosylceramide (globo H), covalently linked to monomethyl auristatin E (MMAE), an auristatin derivative and a potent microtubule disrupting agent, with potential antineoplastic activity. Upon administration of anti-globo H/MMAE ADC OBI 999, the antibody moiety of OBI 999, OBI 888, targets and binds to globo H on tumor cells and is rapidly internalized, thereby delivering MMAE intracellularly. Upon proteolytic cleavage, MMAE targets and binds to tubulin and inhibits its polymerization, resulting in G2/M checkpoint arrest and apoptosis in globo H-expressing tumor cells. Globo H, a hexasaccharide glycosphingolipid, is (over)expressed on the surface of many types of tumor cells. Globo H is minimally or not expressed on healthy, normal cells; its expression on cancer cells is associated with increased proliferation and poor prognosis. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:ADC OBI 999
anti-globo H/MMAE ADC OBI 999
Code name:OBI 999