NCIt definition : An orally available multikinase inhibitor that targets Raf kinase and various receptor
tyrosine kinases (RTKs), with potential antineoplastic activity. Upon oral administration,
donafenib binds to and blocks the activity of Raf kinase, and inhibits Raf-mediated
signal transduction pathways. This inhibits cell proliferation in Raf-expressing tumor
cells. In addition, this agent may inhibit unidentified RTKs, and thus may further
block tumor cell proliferation in susceptible tumor cells. Raf, a serine/threonine
protein kinase, plays a key role in the Raf/mitogen-activated protein kinase kinase
(MEK)/extracellular signal-regulated kinase (ERK) signaling pathway. Deregulation
of this pathway often results in tumor cell proliferation and survival.;