Alternative definition : NCI-GLOSS: A substance being studied in the treatment of certain types of cancer,
including non-Hodgkin lymphoma, breast, colon, lung, ovarian, and prostate. Enzastaurin
blocks certain cell signaling pathways, and may prevent the growth of new blood vessels
that tumors need to grow. It is a type of serine threonine kinase inhibitor and a
type of antiangiogenesis agent.;