Corcept Therapeutics Incorporated (NASDAQ:CORT), a commercial-stage company engaged in the discovery and development of medications to treat severe endocrinologic, oncologic, metabolic and neurologic disorders by modulating the effects of the hormone cortisol, today announced that the primary endpoint was met in the treatment phase of CATALYST, a randomized, double-blind, placebo-controlled study of Korlym in patients with hypercortisolism (Cushing's syndrome) and difficult-to-control type 2 diabetes.

CATALYST is a prospective, Phase 4 study with two parts. The first part assessed the prevalence of hypercortisolism by screening 1057 patients with difficult-to-control type 2 diabetes, defined as hemoglobin A1c greater than 7.5 percent despite receiving optimal therapies, including GLP-1 agonists. Of these patients, 23.8 percent were identified as having hypercortisolism and were eligible to enter CATALYST's treatment phase, in which 136 patients were randomized, 2:1, to receive either Korlym or placebo for 24 weeks. The primary endpoint was the reduction in hemoglobin A1c between these groups.

CATALYST met its primary endpoint. Patients who received Korlym exhibited a clinically meaningful and statistically significant improvement in hemoglobin A1c, with a decrease from baseline of 1.47 percent as compared to a decrease of 0.15 percent in patients who received placebo (placebo-adjusted reduction of 1.32 percent; p-value: < 0.0001). The safety profile of Korlym in this study was consistent with the medication's label and no new side effects or adverse events were identified.

Complete results from CATALYST will be presented at a medical conference next year.