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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antibody-drug conjugate ADC XMT-1536
A proprietary antibody-drug conjugate (ADC) composed of XMT-1535, a proprietary, humanized monoclonal antibody against human sodium-dependent phosphate transport protein 2B (SLC34A2; NaPi2b), site-specifically linked, via a protease cleavable linker, to the proprietary cytotoxic aurastatin derivative auristatin F-HPA (AF-HPA; auristatin F-hydroxypropylamide), with potential antineoplastic activity. XMT-1536 is produced via the proprietary dolaflexin ADC conjugation platform, which promotes the conjugation of between 10 and 15 AF-HPA payload molecules to each XMT-1535 antibody. Upon administration of XMT-1536, the antibody moiety targets and binds to NaPi2b expressed on tumor cells. Upon binding, internalization by endosomes/lysosomes, and enzymatic cleavage, the AF-HPA binds to tubulin and inhibits microtubule polymerization, which results in G2/M phase arrest and apoptosis of NaPi2b-expressing tumor cells. NaPi2b, a tumor-associated antigen (TAA), is overexpressed on a variety of cancer cells and plays a key role in the transport of inorganic phosphate (Pi) and the maintenance of phosphate homeostasis. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:ADC XMT-1536
anti-NaPi2b ADC XMT-1536
anti-NaPi2b/auristatin F-HPA ADC XMT-1536
Code name:XMT 1536
XMT1536
XMT-1536