NCIt definition : An orally bioavailable, highly selective and potent small molecule inhibitor of the
delta and gamma isoforms of phosphoinositide-3 kinase (PI3K) with potential immunomodulating
and antineoplastic activities. Upon administration, duvelisib prevents the activation
of the PI3K delta/gamma-mediated signaling pathways which may lead to a reduction
in cellular proliferation in PI3K delta/gamma-expressing tumor cells. Unlike other
isoforms of PI3K, the delta and gamma isoforms are overexpressed primarily in hematologic
malignancies and inflammatory and autoimmune diseases. By selectively targeting these
PI3K isoforms, PI3K signaling in normal, non-neoplastic cells is minimally or not
affected which would result in a more favorable side effect profile.;