KP372-1 is a specific Akt inhibitor that demonstrates at least 10-fold selectivity against a panel of additional kinase targets, including CDK1, ERK1, GSK3β, LCK, MEK1, PKA, PKC, and S6K. By blocking Akt signaling, KP372-1 has been shown to inhibit proliferation and to induce apoptosis of thyroid cancer cells with an IC50 value of 30-60 nM in vitro. In acute myelogenous leukemia cells, KP372-1 is reported to inhibit the kinase activity of Akt, PDK1, and FLT3, decreasing the colony-forming ability of these cells with an IC50 value less than 200 nM.
