Corcept Therapeutics Incorporated is a pharmaceutical company engaged in the discovery, development and commercialization of drugs for the treatment of severe metabolic, psychiatric and oncologic disorders. The Company is developing mifepristone, a compound that modulates the effects of cortisol by acting as a competitive antagonist at the glucocorticoid receptor (GR). As of December 31, 2016, it had discovered three structurally distinct series of selective cortisol modulators, all of which share mifepristone's affinity for GR but, unlike mifepristone, do not bind to the progesterone receptor. It is conducting two clinical trials of its selective cortisol modulator, CORT125134. One trial is investigating CORT125134 as a treatment for patients with Cushing syndrome. The second trial is investigating the combination of CORT125134 and nab-paclitaxel (Celgene Corporation's Abraxane) to treat patients with solid-tumor cancers.