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

February 13, 2025 updated by: John Mariani MD, New York State Psychiatric Institute

A Double-blind, Placebo-Controlled Trial of Pregabalin for the Treatment of Alcohol Use Disorder

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.

Study Overview

Status

Suspended

Conditions

Intervention / Treatment

Detailed 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

Study Type

Interventional

Enrollment (Estimated)

50

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10019
        • Nyspi-Stars

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Pregabalin
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.
Drug: Pregabalin
Pregabalin will be provided in 75 and 100 mg capsules twice daily for a maximum dose of 600 mg/day or the maximum tolerated dose over the 8 week medication phase and followed by a one week taper.
Other Names:
  • Lyrica
Placebo Comparator: Placebo
Individuals will receive the placebo capsules that appear identical to the pregabalin capsules and will receive the same number of capsules.
Other: Placebo
Placebo capsules will be provided twice daily over 8 weeks and one week taper..

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in proportion of heavy drinking days
Time Frame: measured weekly over the 8 weeks of the medication phase of the trial or length of each individual's participation
Change in heavy drinking days as quantified by the proportion of heavy drinking days (defined as any day where the number of standard drinks was at least 5 for men and at least 4 for women) per week as measured by the timeline follow-back (TLFB) method.
measured weekly over the 8 weeks of the medication phase of the trial or length of each individual's participation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

New York State Psychiatric Institute

Collaborators

National Institute on Alcohol Abuse and Alcoholism (NIAAA)

Investigators

  • Principal Investigator: john mariani, MD, New York Psychiatric Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 11, 2021

Primary Completion (Estimated)

June 30, 2025

Study Completion (Estimated)

June 30, 2025

Study Registration Dates

First Submitted

March 24, 2020

First Submitted That Met QC Criteria

March 24, 2020

First Posted (Actual)

March 26, 2020

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

February 13, 2025

Last Verified

February 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 7977 (Other Identifier: CTEP)
  • R21AA028371 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Individual participant data that underlie the results published in this report (after de-identification) (text, tables, figures)

IPD Sharing Time Frame

beginning 12 months and ending 5 years after article publication

IPD Sharing Access Criteria

to researcher who provides a methodologically sound proposal to achieve aims in the approved proposal

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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