NCI Drug Dictionary

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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.

MCPyV TAg-specific polyclonal autologous CD8-positive T cell vaccine
A preparation of polyclonal autologous CD8 positive T-lymphocytes specific for the Merkel cell polyomavirus (MCPyV) T antigen (TAg) with potential antineoplastic activity. Peripheral blood lymphocytes from a Merkel cell carcinoma (MCC) patient were obtained and antigen-specific CD8+ T cells targeting a specific MCPyV TAg epitope were derived and expanded ex vivo. Upon infusion of the MCPyV TAg-specific polyclonal autologous CD8-positive T cell vaccine, the T cells recognize the MCPyV antigen and exert a cytotoxic T-lymphocyte response against the MCPyV TAg-expressing MCC cells. MCPyV is expressed in about 80% of MCC and is not expressed in normal, human tissue; the MCPyVTag oncoprotein plays a key role in MCC survival and tumor cell proliferation. Check for active clinical trials using this agent. (NCI Thesaurus)
Synonym:MCPyV TAg-specific polyclonal autologous CD8-positive T cells