BI-4924 is a lipophilic, highly plasma protein bound selective phosphoglycerate dehydrogenase (PHGDH) inhibitor (IC50=3 nM) with excellent microsomal, as well as hepatocytic stability. Intracellular trapping of BI-4924 disrupts serine biosynthesis with an IC50 of 2200 nM at 72 h[1]. PHGDH[1]
BI-4924 is a highly potent co-factor nicotinamide adenine dinucleotide (NADH/NAD+)-competitive PHGDH inhibitor. BI-4924 shows high selectivity against the majority of other dehydrogenase targets[1].
[1]. Weinstabl H, et al. Intracellular Trapping of the Selective Phosphoglycerate Dehydrogenase (PHGDH) Inhibitor BI-4924 Disrupts Serine Biosynthesis. J Med Chem. 2019 Jul 31.