NCIt definition : The hydrochloride salt of a saturated derivative of sphingosine. As an inhibitor of
protein kinase C (PKC), safingol competitively binds to the regulatory phorbol-binding
domain of PKC, a kinase involved in tumorigenesis. This agent has been shown to act
synergistically with other chemotherapeutic agents and may potentiate chemotherapy
drug-induced apoptosis in vitro and in vivo.;