ALM301 is an orally active highly specific AKT inhibitor with IC50 values of 0.13 µM, 0.09 µM and 2.75 µM for AKT1, AKT2 and AKT3, respectively. ALM301 inhibits AKT phosphorylation and modulates downstream signalling in vitro. ALM301 can inhibit cancer cell proliferation and tumor growth.