NCT02461927

Brief Summary

The investigators will compare 3 treatment groups (ketamine plus naltrexone vs. ketamine alone vs. placebo) for treating major depressive disorder (MDD) and alcohol use disorder (AUD) in an 8-week randomized, double-blind, placebo-controlled, between-subjects trial. First, prior to the double-blind trial, the investigators will conduct an open-label trial that will include 5 patients with comorbid MDD and AUD to test safety and efficacy of repeated ketamine treatment (0.5 mg/kg; once a week for 4 weeks; a total of 4 ketamine infusions) with a follow-up of 4 weeks. Second, after reviewing the safety and efficacy of repeated ketamine treatment from the open-label trial, the investigators will conduct an 8-week, randomized, double-blind, placebo-controlled trial that will include 60 patients with comorbid MDD and AUD to test safety and efficacy of repeated ketamine treatment (0.5 mg/kg; once a week for 4 weeks; a total of 4 ketamine infusions) plus naltrexone with a follow-up of 4 weeks. The 4-month follow-up session will also occur.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
65

participants targeted

Target at P75+ for phase_1 major-depressive-disorder

Timeline
Completed

Started Jan 2015

Longer than P75 for phase_1 major-depressive-disorder

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2015

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

June 1, 2015

Completed
2 days until next milestone

First Posted

Study publicly available on registry

June 3, 2015

Completed
8.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 30, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 30, 2023

Completed
1.4 years until next milestone

Results Posted

Study results publicly available

April 10, 2025

Completed
Last Updated

April 10, 2025

Status Verified

April 1, 2025

Enrollment Period

8.8 years

First QC Date

June 1, 2015

Results QC Date

October 30, 2024

Last Update Submit

April 9, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Number of Participants With 50% or Greater Improvement in MADRS Scores From Baseline

    Our primary analysis (severity of depression) was to compare the proportions of subjects with clinical response in symptoms of major depressive disorder (response defined as a 50% or greater improvement from baseline in Montgomery-Asberg Depression Rating Scale (MADRS) scores) at the end-of-treatment time point (Day 21, after 4th infusion, T+240 minutes).

    Day 21 (after 4th infusion, 240 minutes)

  • Rate of Complete Abstinence From Alcohol

    Alcohol consumption was measured using the Time Line Follow Back (TLFB) method. The rates of complete abstinence from alcohol across visits 3 (day 0) through visit 7 (day 28) were compared among the three study groups.

    Day 28

Study Arms (3)

Ketamine + Naltrexone

EXPERIMENTAL

Subjects in this arm will receive (1) intravenous ketamine treatment once a week for 4 weeks (a total of 4 infusions) with a follow-up of 4 weeks and (2) intramuscular naltrexone once a month (a total of 2 injections).

Drug: Ketamine + Naltrexone

Ketamine + Placebo

EXPERIMENTAL

Subjects in this arm will receive (1) intravenous ketamine treatment once a week for 4 weeks (a total of 4 infusions) with a follow-up of 4 weeks and (2) intramuscular placebo once a month (a total of 2 injections).

Drug: Ketamine + Placebo

Placebo (psychoactive placebo midazolam) + Placebo

PLACEBO COMPARATOR

Subjects in this arm will receive (1) intravenous placebo treatment (psychoactive placebo midazolam) once a week for 4 weeks (a total of 4 infusions) with a follow-up of 4 weeks and (2) intramuscular placebo once a month (a total of 2 injections).

Drug: Placebo (psychoactive placebo midazolam) + Placebo

Interventions

Subjects in this arm will receive (1) intravenous ketamine (0.5 mg/kg) once a week for 4 weeks (a total of 4 infusions) and (2) intramuscular naltrexone (380 mg) once a month (a total of 2 injections).

Ketamine + Naltrexone

Subjects in this arm will receive (1) intravenous ketamine (0.5 mg/kg) once a week for 4 weeks (a total of 4 infusions) and (2) intramuscular placebo once a month (a total of 2 injections).

Ketamine + Placebo

Subjects in this arm will receive (1) intravenous psychoactive placebo midazolam (0.045 mg/kg) once a week for 4 weeks (a total of 4 infusions) and (2) intramuscular placebo once a month (a total of 2 injections).

Placebo (psychoactive placebo midazolam) + Placebo

Eligibility Criteria

Age21 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Male or female veterans and civilians, 21-65 years old
  • Current major depressive disorder without psychotic features by DSM-5 (antidepressant regimens can be allowed and changed during the trial)
  • Montgomery-Asberg Depression Rating Scale (MADRS) 20 or higher
  • A minimum of 4 of 11 current alcohol use disorder symptoms by DSM-5
  • Heavy drinking at least 4 times in the past month ('heavy drinking' defined as 5 standard drinks per day for men and 4 standard drinks per day for women
  • Able to provide written informed consent

You may not qualify if:

  • Current substance use disorder by DSM-5 in the past 3 months (except alcohol, tobacco, or cannabis)
  • Current or past history of psychotic features or psychotic disorder
  • Current dementia
  • Current uncontrolled hypertension (systolic BP \> 170 mm Hg or diastolic BP \> 100 mm Hg)
  • Unstable medical condition or allergy to ketamine, midazolam, naltrexone, or lorazepam---clinically determined by a physician
  • Imminent suicidal or homicidal risk
  • Pregnant or nursing women, positive pregnancy test, or inadequate birth control methods in women of childbearing potential
  • Positive opioid or illicit drug screen test (except marijuana)
  • Opioid use within 10 days prior to study medication (injectable naltrexone) or risks for opioid use during the study
  • Liver enzymes that are three times higher than the upper limit of normal
  • Current use of benzodiazepine
  • Acute narrow-angle glaucoma
  • Severe sleep apnea---clinically determined by a physician

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

VA Connecticut Healthcare System West Haven Campus, West Haven, CT

West Haven, Connecticut, 06516-2770, United States

Location

Related Publications (1)

  • Yoon G, Pittman B, Ralevski E, Petrakis IL, Krystal JH. Antidepressant efficacy of ketamine plus naltrexone for major depression comorbid with alcohol use disorder: a randomized controlled trial. Int J Neuropsychopharmacol. 2025 Aug 1;28(8):pyaf056. doi: 10.1093/ijnp/pyaf056.

MeSH Terms

Conditions

Depressive Disorder, MajorAlcoholism

Interventions

KetamineNaltrexone

Condition Hierarchy (Ancestors)

Depressive DisorderMood DisordersMental DisordersAlcohol-Related DisordersSubstance-Related DisordersChemically-Induced Disorders

Intervention Hierarchy (Ancestors)

CyclohexanesCycloparaffinsHydrocarbons, AlicyclicHydrocarbons, CyclicHydrocarbonsOrganic ChemicalsNaloxoneMorphinansOpiate AlkaloidsAlkaloidsHeterocyclic CompoundsHeterocyclic Compounds, Bridged-RingHeterocyclic Compounds, 4 or More RingsHeterocyclic Compounds, Fused-RingPhenanthrenesPolycyclic Aromatic HydrocarbonsPolycyclic Compounds

Results Point of Contact

Title
Dr. Gihyun Yoon
Organization
VA CT Healthcare System, Yale University

Study Officials

  • Gihyun Yoon, MD

    VA Connecticut Healthcare System West Haven Campus, West Haven, CT

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
FED
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 1, 2015

First Posted

June 3, 2015

Study Start

January 1, 2015

Primary Completion

October 30, 2023

Study Completion

October 30, 2023

Last Updated

April 10, 2025

Results First Posted

April 10, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will share
Shared Documents
ANALYTIC CODE

Locations