FM26 has a distinct isoxazole chemotype and effectively reduces IL-17a mRNA production in EL4 cells. FM26 is a potent and allosteric retinoic acid receptor-related orphan receptor γt (RORγt) inverse agonists with an IC50 of 264 nM.
A-9758 is a RORγ ligand and a selective RORγt inverse agonist (IC50: 5 nM) and exhibits robust potency against IL-17A release. It is effective in suppressing both Th17 differentiation and Th17 effector function. A-9758 significantly attenuates IL-23 drive