UCT943 maintains high in vitro selectivity (>200-fold) for the parasite PvPI4K versus the human PI4Kβ isozyme (IC50 of PI4Kβ, 5.4 μM), inhibition of which is linked to immunosuppressive effects.
In vitro cytotoxicity of UCT943 is tested against L6 cells, chinese hamster ovarian (CHO), Vero, and HepG2 cells, with 50% cytotoxic concentrations (CC50s) of 12, 17, 113, and 13 μM, respectively.