NCIt definition : A synthetic triarylimidazole with potential antineoplastic activity. As a Raf kinase
inhibitor, L-779450 competes with ATP for binding to the Raf-1 and A-Raf catalytic
sites, thus inhibiting their enzymatic activities and blocking various signal transduction
pathways that depend on Raf-1 kinase (particularly the Ras-Raf-MEK-ERK cascade which
is often up-regulated in neoplasms). (NCI04);