Clinical trial · Interventional
An Extension Study of CORLUX in the Treatment of Endogenous Cushing's Syndrome
An Open Label Extension Study of the Efficacy and Safety of CORLUX® (Mifepristone) in the Treatment of the Signs and Symptoms of Endogenous Cushing's Syndrome
NCT00936741CI-TRIAL-00014161completedPhase 3Results postedClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Participants in study C-1073-400 (NCT00569582) will be invited to participate in this extension study to examine the long term safety of mifepristone in the treatment of the signs and symptoms of endogenous Cushing's syndrome. Total treatment duration may be up to 12 months or longer at the discretion of the Investigator.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Cushing's Syndrome | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| mifepristone | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Mifepristone
- description
- Mifepristone 300mg to 1200mg once daily
- interventionNames
- Drug: mifepristone
Primary outcomes (1)
- measure
- Number of Participants With Adverse Events
- timeFrame
- Up to three years.
- description
- Subjects who received at least one dose of mifepristone were included in the safety analysis.
Secondary outcomes (1)
- measure
- The Long-term Benefit of Mifepristone Treatment in Cushing's Syndrome as Measured by Changes in the Score on the Physician's Global Assessment of Disease Severity
- timeFrame
- Up to three years.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Have completed the Week 24 visit and the 6-Week Follow-up visit of Corcept Study C-1073-400 (NCT00569582). * In the opinion of the Investigator, are expected to maintain clinical benefit from mifepristone. * Women of childbearing potential have a negative serum pregnancy test at Entry. * Women of childbearing potential must be willing to use non-hormonal, medically acceptable methods of contraception during the study. * Are able to provide written informed consent * Are able to return to the investigative site to complete the study evaluations outlined in the protocol. * Will not use systemic estrogens during the study. Exclusion Criteria: * Have an acute or unstable medical problem, which could be aggravated by mifepristone treatment. * Are taking medications within 14 days of the Entry visit that a) have a large first pass metabolism that is largely mediated by CYP3A4 and which have a narrow therapeutic margin; and/or b) are strong CYP3A4 inhibitors. * Female patients of reproductive potential, who are pregnant or who are unable or unwilling to use medically acceptable, non-hormonal methods of contraception during the study. * Have received investigational treatment (drug, biological agent or device) other than CORLUX (mifepristone) within 30 days of Entry * Have a history of an allergic reaction or intolerance to CORLUX (mifepristone) * Have uncorrected hypokalemia (potassium level of \<3.5 mEq/L) at Entry. Spironolactone or eplerenone is allowed to control hypokalemia. * Postmenopausal women with a history of endometrial hyperplasia with atypia or pathological features consistent with endometrial carcinoma. * Thickened endometrium on the Entry Visit transvaginal ultrasound that has not resolved after induction of menstrual bleeding with progesterone. * Uncontrolled, clinically significant hypothyroidism or hyperthyroidism. * Any woman with an intact uterus who has a hemorrhagic disorder or is being treated with an anticoagulant (e.g. warfarin, heparin). * Have renal failure as defined by a serum creatinine of ≥2.2 mg/dL. * Elevated total bilirubin \>1.5 ULN, elevated ALT or AST ≥3X the upper limit of normal.
References
Publications (2)
- DERIVEDFein HG, Vaughan TB 3rd, Kushner H, Cram D, Nguyen D. Sustained weight loss in patients treated with mifepristone for Cushing's syndrome: a follow-up analysis of the SEISMIC study and long-term extension. BMC Endocr Disord. 2015 Oct 27;15:63. doi: 10.1186/s12902-015-0059-5. PMID 26507877
- DERIVEDFleseriu M, Findling JW, Koch CA, Schlaffer SM, Buchfelder M, Gross C. Changes in plasma ACTH levels and corticotroph tumor size in patients with Cushing's disease during long-term treatment with the glucocorticoid receptor antagonist mifepristone. J Clin Endocrinol Metab. 2014 Oct;99(10):3718-27. doi: 10.1210/jc.2014-1843. Epub 2014 Jul 11. PMID 25013998