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.