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Drug Name: Palbociclib Isethionate [USAN] View Structure
Description: Specific inhibitor of cyclin-dependent kinases 4 & 6.

NCI: An orally available cyclin-dependent kinase (CDK) inhibitor with potential antineoplastic activity. Palbociclib selectively inhibits cyclin-dependent kinase 4 (CDK4) and 6 (CDK6), thereby inhibiting retinoblastoma (Rb) protein phosphorylation early in the G1 phase leading to cell cycle arrest. This suppresses DNA replication and decreases tumor cell proliferation. CDK4 and 6 are serine/threonine kinases that are upregulated in many tumor cell types and play a key role in the regulation of cell cycle progression.(NCI Thesaurus) 
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Last updated: Jan 2018
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