AGI-5198 is a selective R132H-IDH1 inhibitor which is identified through a high-throughput screen blocked, in a dose-dependent manner, the ability of the mutant enzyme (mIDH1) to produce R-2-hydroxyglutarate (R-2HG). It is also induced the expression of zinc finger and BTB domain–containing protein 16 (ZBTB16), known as promyelocytic leukemia zinc finger (PLZF), a transcriptional repressor protein which is located on chromosome 11q23 and has been shown to promote glial differentiation in the central nervous system. AGI-5198 is also able to induce the expression of genes and cell markers associated with glial-specific differentiation in glioma cell, the expression of differentiation-associated genes, reduce H3K9 trimethylaytion, and cause tumor growth inhibition.
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