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.

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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
OBI-888/MMAE ADC OBI-999
Code name:OBI 999
OBI999
OBI-999