Merimepodib (VX-497) is a novel noncompetitive inhibitor of IMPDH. Merimepodib is orally bioavailable and inhibits the proliferation of primary human, mouse, rat, and dog lymphocytes at concentrations of approximately 100 nM. (en)
Merimepodib is a orally active inhibitor of inosine monophospate dehydrogenase (IMPDH). IMPDH inhibition leads to a reduction in intracellular guanosine triphosphate (GTP), a molecule required for DNA and RNA synthesis. (en)