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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FLT3/CDK4/6 inhibitor FLX925
An orally available inhibitor of FMS-related tyrosine kinase 3 (FLT3, STK1, or FLK2) and the cyclin-dependent kinases 4 (CDK4) and 6 (CDK6), with potential antineoplastic activity. Upon administration, FLT3/CDK4/6 inhibitor FLX925 specifically binds to and inhibits FLT3, which interferes with the activation of FLT3-mediated signal transduction pathways and reduces cell proliferation in cancer cells that overexpress FLT3. In addition FLX925 inhibits CDK4 and 6 and prevents the phosphorylation of retinoblastoma (Rb) protein in early G1 phase. Inhibition of Rb phosphorylation prevents CDK-mediated G1-S phase transition, which causes G1 phase cell cycle arrest, suppresses DNA synthesis and inhibits cancer cell growth. FLT3, a class III tyrosine kinase receptor, is overexpressed in a variety of cancers. Overexpression of CDK4/6, which is seen in certain types of cancer, causes cell cycle deregulation. Check for active clinical trials using this agent. (NCI Thesaurus)

Code name:FLX925