Pregabalin Trial for the Treatment of Alcohol Use Disorder (GABI2)

New York State Psychiatric Institute

Status and phase: Suspended; Phase 2

Conditions: Alcohol Use Disorder

Treatments: Drug: Pregabalin; Other: Placebo

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT04322305

R21AA028371 (U.S. NIH Grant/Contract)

7977 (Other Identifier)

Details and patient eligibility

About

In a 10-week randomized double-blind placebo-controlled outpatient pilot trial the efficacy of pregabalin in the treatment of alcohol dependence will be studied in 50 treatment-seeking outpatients. Participants will report drinking a minimum of 5 standard drinks for men or 4 standard drinks for women at least 4 days per week over the past 28 days.

Full description

In a 10-week double-blind placebo controlled outpatient clinical trial, the safety and efficacy ofpregabalin will be tested in 50 outpatients with Alcohol Use Disorder.Participants will be randomly allocated (1:1) to receive pregabalin or an identical-appearing, inert placebo. All study medication (placebo and pregabalin) will be over-capsulated with riboflavin to assess compliance. Pregabalin will be administered in 75 mg and 100 capsules; placebo capsules will appear identical to the pregabalin capsules. Participants in both study arms will receive the same number of capsules. Pregabalin will be titrated over a 3-week period to the FDA maximum (600 mg per day) or the maximum tolerated dose.

Study visits will occur daily for the first 4 days of the study period, then approximately every other day for the remainder of week 1, for a total of 5 study visits (study days 1,2,3,4, and 5 or 7). During the second week, study visits will continue every other day for a total of 3 study visits (study days 8,10, and 12). During the remainder of the 8-week medication study period, study visits will occur twice weekly. There will be two visits during a post-study taper week (week 9) and a follow-up visit during week 10. One visit per week will be with the research psychiatrist. All participants will have a weekly supportive behavioral treatment session with the research psychiatrist using a manual designed for pharmacotherapy trials in subjects with alcohol use disorders

Enrollment: 50 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Meets DSM-5 criteria for current alcohol use disorder
• Reports drinking a minimum of 5 standard drinks for men or 4 standard drinks for women at least 4 days per week over the past 28 days
• Between the ages of 18 and 65
• Able to provide informed consent and comply with study procedures

Exclusion criteria

• Subjects with any current psychiatric disorder as defined by DSM-5, other than Alcohol use disorder, that in the investigator's judgment likely requiring ongoing dosage adjustments of their current medications or requiring changes in their medication and/or might require intervention over the course of the study, including schizophrenia, schizoaffective disorder, psychotic disorders other than transient psychosis due to drug abuse, bipolar disorder, and current suicidality with plan and intent. Individuals who are currently stable on a psychotropic medication for at least 3 months may be included if in the investigator's opinion the psychotropic medication is compatible with the study medication (pregabalin). The medications being allowed are commonly used antidepressants, including the SSRIs (e.g., fluoxetine, paroxetine, fluvoxamine, sertraline, citalopram, escitalopram), SNRI's (e.g., venlafaxine, desvenlafaxine, duloxetine), and bupropion.
• Evidence of moderate-to-severe alcohol withdrawal Clinical Institute Withdrawal Assessment (revised version) (CIWA-Ar score ≥10)
• History of alcohol withdrawal seizures or alcohol withdrawal delirium
• History of allergic reaction to candidate medication (pregabalin)
• Pregnancy, lactation, or failure in female patients to use adequate contraceptive methods
• Unstable physical disorders which might make participation hazardous
• Subjects who have a current DSM-5 diagnosis of moderate or severe substance use disorder, with the exception of alcohol, nicotine and caffeine dependence. A diagnosis of a mild substance use disorder will not be exclusionary, as long as the current primary substance use disorder is alcohol dependence.
• Are legally mandated to participate in alcohol use disorder treatment program

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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50 participants in 2 patient groups, including a placebo group

Pregabalin

Experimental group

Description:

Treatment with pregabalin administered in 75 mg and 100 capsules in dosages up to 600 mg per day for up to 8 weeks (including a 3 week titration run up) followed by a one week taper.

Treatment:

Drug: Pregabalin

Placebo

Placebo Comparator group

Description:

Individuals will receive the placebo capsules that appear identical to the pregabalin capsules and will receive the same number of capsules.

Treatment:

Other: Placebo