NCIt definition : An epoxomicin derivate with potential antineoplastic activity. Carfilzomib irreversibly
binds to and inhibits the chymotrypsin-like activity of the 20S catalytic core subunit
of the proteasome, a protease complex responsible for degrading a large variety of
cellular proteins. Inhibition of proteasome-mediated proteolysis results in an accumulation
of polyubiquinated proteins, which may lead to cell cycle arrest, induction of apoptosis,
and inhibition of tumor growth.;