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.
- carbon C14 lenvatinib mesylate
A radioconjugate composed of the orally bioavailable mesylate salt form of lenvatinib, a receptor tyrosine kinase (RTK) inhibitor, labeled with the radioisotope carbon C 14, with potential use for evaluating the pharmacokinetic profile of lenvatinib. Upon administration of carbon C14 lenvatinib mesylate, lenvatinib targets and binds strongly to multiple RTKs, including vascular endothelial growth factor receptor 1 (VEGFR1;FLT1), VEGFR2 (KDR), VEGFR3 (FLT4), fibroblast growth factor receptor 1 (FGFR1), FGFR2, FGFR3, and FGFR4, platelet derived growth factor receptor alpha (PDGFRa), KIT, and RET. This inhibits growth of tumor cells that overexpress these RTKs. Labeling of lenvatinib with the radioactive tracer carbon C 14 permits the evaluation of lenvatinib's pharmacokinetic profile, including its absorption, distribution, metabolism, and excretion (ADME). Check for active clinical trials using this agent. (NCI Thesaurus)
Synonym: 14C lenvatinib mesylate