GSK2194069 is a potent inhibitor of β-ketoyl reductase (KR) of fatty acid synthase (FASN), with an IC50 value of 7.7 nM. GSK2194069 shows specifically inhibitory effect on FAS expressing cancer cells, by acting potent efficacy on acetoacetyl-CoA, NADPH with IC50 or Ki values of 4.8 nM and 5.6 nM, respectively.