Tankyrase 1 and 2 (TNKS1/2) impact the WNT/β-catenin and Hippo signaling pathways that are involved in numerous human disease conditions including cancer. OM-153 shows picomolar IC₅₀ inhibition in a cellular (HEK293) WNT/β-catenin signaling reporter assay, no off-target liabilities, overall favorable ADME properties, and an improved pharmacokinetic profile in mice. The pharmacokinetic analyses in mice were performed according to the standard protocols of Medicilon.