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-CD166 probody-drug conjugate CX-2009
A probody drug conjugate (PDC) composed of a recombinant antibody targeting the tumor-associated antigen (TAA) CD166, which is masked by a cleavable masking peptide, and conjugated to the cytotoxic agent maytansinoid DM4, with potential antineoplastic activity. Upon administration of CX-2009 and migration to the tumor microenvironment (TME), the cleavable masking peptide, which prevent anti-CD166 antibody binding to the CD166 expressed on both normal cells and tumor cells, is proteolytically cleaved by tumor-associated proteases that are specifically present in the TME. This enables the anti-CD166 antibody moiety of CX-2009 to selectively bind to, be internalized by, and deliver DM4 into CD166-expressing tumor cells. Following internalization, DM4 is released, binds to tubulin and disrupts microtubule assembly/disassembly dynamics, resulting in inhibition of cell division and cell growth of CD166-expressing tumor cells. The masking peptide prevents binding of the anti-CD166 antibody to CD166 in normal tissues, thereby minimizing toxicities. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:ADC CX-2009
anti-CD166-DM4 CX-2009
PDC CX-2009
Code name:CX-2009