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.

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