ORIC-101 is a highly potent and selective glucocorticoid receptor antagonist, with an EC50 of 5.6 nM. Anti-cancer activity.
ORIC-101 shows markedly reduced androgen receptor agonism (EC50, 2500 nM) and CYP2C8 and CYP2C9 inhibition profiles (IC50, >10 μM)[1].ORIC-101 (1-1000 nM) dose-dependently reduces the expression of n GR-mediated target gene (FKBP5 and GILZ), with IC50s of 17.2 and 21.2 nM, respectively[1].
ORIC-101 (75 mg/kg, P.O. twice a day for 16-22 days) enhances the anti-tumor activity in combination with gemcitabine and carboplatin in OVCAR5 xenograft tumor in cortisol-treated mice[1].
[1]. Rew Y, et al. Discovery of a Potent and Selective Steroidal Glucocorticoid Receptor Antagonist (ORIC-101). J Med Chem. 2018 Sep 13;61(17):7767-7784.