NCIt definition : A small-molecule pyridylsulfonamide inhibitor of phosphatidylinositol 3-kinase (PI3K)
with potential antineoplastic activity. Omipalisib binds to and inhibits PI3K in the
PI3K/mTOR signaling pathway, which may trigger the translocation of cytosolic Bax
to the mitochondrial outer membrane, increasing mitochondrial membrane permeability
and inducing apoptotic cell death. Bax is a member of the proapoptotic Bcl2 family
of proteins. PI3K, often overexpressed in cancer cells, plays a crucial role in tumor
cell regulation and survival.;