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An orally available inhibitor of members of the Raf family of serine/threonine protein kinases, with potential antineoplastic activity. Upon administration, Raf kinase inhibitor HM95573 binds to and inhibits the B-Raf mutant V600E and C-Raf. This inhibits B-Raf V600E- and C-Raf-mediated signal transduction pathways, thereby inhibiting tumor cell growth of susceptible tumor cells. In addition, HM95573 may also inhibit mutated Ras proteins. Raf protein kinases play a key role in the Raf/mitogen-activated protein kinase kinase (MEK)/extracellular signal-related kinase (ERK) signaling pathway, which is often dysregulated in human cancers and plays a key role in tumor cell proliferation and survival. The Raf mutation B-Raf V600E, where the valine at residue 600 is substituted for glutamic acid, is frequently overexpressed in a variety of human tumors and results in the constitutive activation of the Raf/MEK/ERK signaling pathway. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C121646\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C121646\' NCI Thesaurus)
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