Investigation of Mifepristone (RU486) on Stress Sensitivity and Relapse Prevention in Cocaine Dependent Patients

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
New York State Psychiatric Institute Identifier:
First received: May 26, 2010
Last updated: August 31, 2015
Last verified: August 2015
This research will evaluate the impact of blocking central and peripheral glucocorticoid receptors on stress sensitivity and the risk of relapse to cocaine use in treatment-seeking cocaine-dependent individuals. Mifepristone (RU-486) will be the glucocorticoid antagonist used.

Condition Intervention Phase
Cocaine Dependence
Drug: Mifepristone
Drug: placebo
Phase 2
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Investigation of the Effects of Mifepristone (RU486) on Stress Sensitivity and Relapse Prevention in Cocaine Dependent Patients

Resource links provided by NLM:

Further study details as provided by New York State Psychiatric Institute:

Primary Outcome Measures:
  • Days to relapse [ Time Frame: number of days during 8 weeks ] [ Designated as safety issue: No ]
    mean number of days to relapse during 8 week trial.

Estimated Enrollment: 80
Study Start Date: May 2010
Estimated Study Completion Date: December 2015
Estimated Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Mifepristone
Mifepristone 600mg
Drug: Mifepristone
Mifepristone 600mg, 3x/wk for 4 weeks
Other Name: RU486
Placebo Comparator: placebo
Drug: placebo

Detailed Description:
This study attempts to reduce relapse risk by blocking glucocorticoid receptors, and thus allow some of the changes in the brain caused by cocaine to redress themselves

Ages Eligible for Study:   18 Years to 60 Years
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Age 18 to 60.
  2. Male.
  3. Meets DSM?IV criteria for current cocaine dependence and is seeking treatment.
  4. Identifies life stress (work, interpersonal, financial, etc) as a trigger for cocaine use or reports uncontrollable craving to use of cocaine.
  5. Displays at least one cocaine-positive urine toxicology during screening.
  6. Uses cocaine at least 4/30 days in the past month, or reports episodic binges of large amounts of cocaine (at least $200) at least 2x/month.
  7. Able to give informed consent and comply with study procedures.

Exclusion Criteria:

  1. Meets DSM-IV criteria for major depression, bipolar disorder, schizophrenia or any psychotic disorder other than transient psychosis due to drug abuse. Substance Induced Mood Disorder with Hamilton Depression Scale score ³13 will be excluded.
  2. History of seizures in the last 2 years, or history of seizures related to the substance (cocaine, alcohol, or benzodiazepine) that the patient continues to use.
  3. History of allergic, dermatological, or adverse event to mifepristone
  4. Chronic organic mental disorder, insufficient proficiency in English that would render an individual incapable of giving informed consent.
  5. Significant current suicidal risks, history of significant suicidal behavior or any suicide attempt within the past year.
  6. Unstable physical disorders, which might make participation hazardous such as hypertension (>140/90), WBC < 3.5, new diagnosis of hepatitis (patients with chronic mildly elevated transaminase levels (£2-3 X upper limit of normal will be considered acceptable if PT/PTT is normal), renal failure (creat > 2; BUN > 40), or diabetes (HbA1c > 7%), and low Hb (< 12g/dL) or low Hct (<36%).
  7. Coronary vascular disease as indicated by history, or suspected by abnormal ECG or history of cardiac symptoms. Hx of cardiac symptoms (chest pain, chest pressure, shortness of breath, syncope) during cocaine use.
  8. Cardiac conduction system disease as indicated by QRS duration of ³ 0.11 msec.
  9. Currently meets DSM-IV criteria for another substance dependence or abuse disorder other than nicotine, alcohol, or cannabis. If alcohol dependent, must not be in need of detoxification. Heavy male drinkers (who consume greater than 5 standard alcoholic drink per day per NIAAA definition) will be excluded.
  10. Presents with metabolic indicators of hypoadrenalism such as low serum sodium (<130 mEq/L), high serum potassium (>5.5 mEq/L), Na/K ratio < 30:1, low fasting blood sugar (<50 mg/dL), or high BUN (>20 mg/dL), or a previous history of Addison's disease or adrenal insufficiency, or the presence of low K (< 3.5 mEq/L). spot AM cortisol <5ug/dL, PM cortisol < 3 ug/dL
  11. Participants who cannot comply with study procedures during the initial hospitalization phase.
  12. Supplemental exclusion criteria for cold pressor test (CPT): history of frostbite, open cut or sore on foot to be immersed, history of Raynaud's phenomenon. During the testing, if sBP > 190 or dBP > 120, or HR > 160, the test will be interrupted. A second occurrence of these values will stop all further CPT.

13: Patients taking medications metabolized by cytochrome 3A4 (ex: erythromycin, protease inhibitors) or that inhibit this cytochrome; or consuming grapefruit juice.

14: Patients with an underlying hemorrhagic disorder and those on anti-coagulants. INR > 1.1, PT > 17 msecs, total plt <100x109/L.

15: Use of treatment agents that inhibit steroid biosynthesis by the adrenal cortex, such as metyrapone, ketoconazole, fluconazole, aminoglutethimide, or etomidate. Patients also requiring inhaled steroids.

16. Female

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Please refer to this study by its identifier: NCT01134198

United States, New York
New York, New York, United States, 10032
Sponsors and Collaborators
New York State Psychiatric Institute
Principal Investigator: Wilfid N Raby, Md, PhD NYSPI
  More Information

Responsible Party: New York State Psychiatric Institute Identifier: NCT01134198     History of Changes
Other Study ID Numbers: 6013  RU486 for Cocaine Dependence 
Study First Received: May 26, 2010
Last Updated: August 31, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by New York State Psychiatric Institute:
Cocaine Dependence

Additional relevant MeSH terms:
Cocaine-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Substance-Related Disorders
Abortifacient Agents
Abortifacient Agents, Steroidal
Contraceptive Agents
Contraceptive Agents, Female
Contraceptives, Oral
Contraceptives, Oral, Synthetic
Contraceptives, Postcoital
Contraceptives, Postcoital, Synthetic
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Luteolytic Agents
Menstruation-Inducing Agents
Physiological Effects of Drugs
Reproductive Control Agents processed this record on May 23, 2016