~3 spots leftby Apr 2026

A Study of the Efficacy and Safety of CORLUX in the Treatment of Endogenous Cushing's Syndrome

(SEISMIC Trial)

Recruiting in Palo Alto (17 mi)
+16 other locations
Age: 18+
Sex: Any
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 3
Waitlist Available
Sponsor: Corcept Therapeutics
No Placebo Group
Pivotal Trial (Near Approval)
Prior Safety Data
Approved in 3 Jurisdictions

Trial Summary

What is the purpose of this trial?

Patients will receive Corlux (mifepristone) daily for up to 24 weeks. Assessments of the signs and symptoms of Cushing's syndrome will be obtained.

Research Team

CG

Coleman Gross

Principal Investigator

Corcept Therapeutics

Eligibility Criteria

Inclusion Criteria

Are at least 18 years of age
Have a confirmed diagnosis of endogenous hypercortisolemia caused by ACTH dependent or ACTH independent etiologies, including
Cushing's Disease (that has recurred after primary pituitary surgery, or has failed pituitary surgery, or has been treated with radiation therapy to the pituitary, or is not treatable with surgery, or exists in patients who are not candidates for surgery, and is confirmed by documentation of ACTH immuno-reactivity on a pathological evaluation of pituitary tissue from a previous surgical specimen or IPSS with a central-to-peripheral gradient (ratio) of >2 before or >3 after CRH administration).
See 7 more

Treatment Details

Interventions

  • Mifepristone (Corticosteroid)
Participant Groups
1Treatment groups
Experimental Treatment
Group I: 1Experimental Treatment1 Intervention

Mifepristone is already approved in Canada for the following indications:

🇨🇦
Approved in Canada as Mifeprex for:
  • Abortion
  • Cushing's Syndrome

Find a Clinic Near You

Who Is Running the Clinical Trial?

Corcept Therapeutics

Lead Sponsor

Trials
72
Recruited
7,700+

Dr. Joseph K. Belanoff

Corcept Therapeutics

Chief Executive Officer since 2014

MD from Stanford University

Dr. William Guyer

Corcept Therapeutics

Chief Medical Officer since 2021

PharmD