NCIt definition : The citrate salt form of ixazomib, an orally bioavailable second generation proteasome
inhibitor (PI) with potential antineoplastic activity. Ixazomib inhibits the activity
of the proteasome, blocking the targeted proteolysis normally performed by the proteasome,
which results in an accumulation of unwanted or misfolded proteins; disruption of
various cell signaling pathways may follow, resulting in the induction of apoptosis.
Compared to first generation PIs, second generation PIs may have an improved pharmacokinetic
profile with increased potency and less toxicity. Proteasomes are large protease complexes
that degrade unneeded or damaged proteins that have been ubiquinated.;