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.

imetelstat sodium
The sodium salt of imetelstat, a synthetic lipid-conjugated, 13-mer oligonucleotide N3' P5'-thio-phosphoramidate with potential antineoplastic activity. Complementary to the template region of telomerase RNA (hTR), imetelstat acts as a competitive enzyme inhibitor that binds and blocks the active site of the enzyme (a "telomerase template antagonist"), a mechanism of action which differs from that for the antisense oligonucleotide-mediated inhibition of telomerase activity through telomerase mRNA binding. Inhibition of telomerase activity in tumor cells by imetelstat results in telomere shortening, which leads to cell cycle arrest or apoptosis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Synonym:telomerase inhibitor GRN163L
Code name:GRN163L