Mutant IDH1-IN-1 is a potent inhibitor of the mutant IDH1 R132 h, exhibiting an IC50 of less than 0.1 μM.

IHMT-IDH1-053 (compound 16) is an irreversible inhibitor highly selective for the IDH1 R132H mutant, with an IC50 of 4.7 nM. It preferentially targets IDH1 mutants over wild-type IDH1 and IDH2, in both their wild-type and mutant forms. In 293T cells transfected with the IDH1 R132H mutant, IHMT-IDH1-053 reduces 2-hydroxyglutarate (2-HG) production with an IC50 of 28 nM. The compound binds to the R132H protein at an allosteric site near the NADPH binding region, forming a covalent linkage with Cys269. Additionally, IHMT-IDH1-053 inhibits the growth of both the HT1080 cell line and primary acute myeloid leukemia (AML) cells harboring IDH1 R132 mutations [1].

Ivosidenib (AG-120) is an orally available inhibitor of isocitrate dehydrogenase type 1 (IDH1) with potential antineoplastic activity. It specifically inhibits a mutated form of IDH1 in the cytoplasm, preventing the formation of the oncometabolite 2-hydroxyglutarate (2 hG), which may induce cellular differentiation and inhibit cellular proliferation in IDH1-expressing tumor cells.

Mutant IDH1 inhibitor is an effective inhibitor of mutant IDH1 R132H (IC50: < 72 nM).

Alternaphenol B2, a selective inhibitor of mutant isocitrate dehydrogenase 1 (IDH1m), is sourced from the coral-derived fungus Parengyodontium album SCSIO SX7W11. It exhibits inhibitory activity specifically against the IDH1 R132H mutation, with an IC50 of 41.9 μM [1].

Mutant IDH1-IN-2 is an inhibitor of mutant Isocitrate dehydrogenase (IDH) proteins, with an IC50 of 16.6 nM in fluorescence biochemical assay and an IC50 of <22 nM in LS-MS biochemical assay.

Olutasidenib (FT-2102) is under the study in the treatment of acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS). Olutasidenib is a highly effective, brain penetrant, and selective inhibitor of the mutant Isocitrate dehydrogenase 1 (IDH1) (IC50: 21.2 nM and 114 nM for IDH1- R132H and IDH1- R132C, respectively).

Enasidenib (AG-221) is an orally available inhibitor of specific mutant forms of the mitochondrial enzyme isocitrate dehydrogenase type 2 (IDH2), with potential antineoplastic activity.