We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
ClinicalTrials.gov Menu

Say When: Targeting Heavy Alcohol Use With Naltrexone Among MSM (Say When)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT02330419
Recruitment Status : Completed
First Posted : January 5, 2015
Last Update Posted : September 28, 2021
San Francisco Department of Public Health
National Institutes of Health (NIH)
Information provided by (Responsible Party):
University of California, San Francisco

Brief Summary:
This is a double-blind, placebo-controlled trial of 120 binge-drinking MSM to 12 weeks of naltrexone 50mg, to be taken in anticipation of heavy drinking. Ethnically and racially diverse participants will be recruited using Respondent Driven Sampling as well as active field recruitment. MSM will be seen weekly for alcohol-metabolite urine testing, study drug dispensing, and brief counseling for alcohol use. Safety assessments and behavioral surveys will be completed monthly.

Condition or disease Intervention/treatment Phase
Binge Drinking HIV Drug: Placebo Drug: Naltrexone Phase 2

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 120 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Treatment
Official Title: Say When: Targeting Heavy Alcohol Use With Naltrexone Among MSM
Actual Study Start Date : April 2015
Actual Primary Completion Date : January 2021
Actual Study Completion Date : January 2021

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Alcohol

Arm Intervention/treatment
Placebo Comparator: Placebo
Placebo 50mg, as needed
Drug: Placebo
Active Comparator: Naltrexone
Naltrexone 50mg, as needed
Drug: Naltrexone

Primary Outcome Measures :
  1. Efficacy of targeted naltrexone versus placebo in reducing binge drinking among non-dependent MSM [ Time Frame: 12 weeks ]
    Number of binge drinking days in timeline follow-back (TLFB), by arm

  2. Efficacy of targeted naltrexone versus placebo in reducing alcohol consumption among non-dependent MSM [ Time Frame: 12 weeks ]
    Proportion of ethyl glucuronide (EtG) positive urines, by arm

  3. Efficacy of targeted naltrexone versus placebo in reducing alcohol-associated sexual risk behaviors [ Time Frame: 12 weeks ]
    GEE Poisson models with robust standard errors for the four monthly ACASI assessments on numbers of male anal sex partners, HIV-serodiscordant unprotected anal sex partners, unprotected anal sex partners while intoxicated with alcohol, and unprotected anal sex events with serodiscordant partners, including the baseline value

  4. Tolerability of targeted naltrexone versus placebo [ Time Frame: 12 weeks ]
    Adverse clinical event rates, by arm

  5. Acceptability of targeted naltrexone versus placebo [ Time Frame: 12 weeks ]
    Medication adherence (via data from MEMs cap and self-report from SMS texts and TLFB), by arm

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • (1) Male gender (2) self-reported anal sex with men in the prior three months while under the influence of alcohol (3) at least one binge drinking (five or more drinks on a single occasion) session per week in the prior three months; (4) interested in reducing binge alcohol consumption; (5) HIV-negative by rapid antibody test or medical record documentation of HIV infection (HIV positive participants); (6) no current acute illnesses requiring prolonged medical care; (7) no chronic illnesses that are likely to progress clinically during trial participation; (8) able and willing to provide informed consent and adhere to visit schedule; (9) age 18-70 years; (10) baseline CBC, total protein, albumin, glucose, alkaline phosphatase, creatinine, BUN, and electrolytes without clinically significant abnormalities as determined by study clinician in conjunction with symptoms, physical exam, and medical history.

Exclusion Criteria:

  • (1) Any psychiatric (e.g. depression with suicidal ideation) or medical condition that would preclude safe participation in the study; (2) known allergy/previous adverse reaction to naltrexone; (3) current use of/ dependence on any opioids or a known medical condition which currently requires/may likely require opioid analgesics; (4) opioid-positive urine at enrollment; (5) current CD4 count < 200 cells/mm3 (6) moderate/severe liver disease (AST, ALT > 3 times upper limit of normal); (7) impaired renal function (creatinine clearance < 50 ml/min); (8) currently participating in another intervention research study with potential overlap; (9) alcohol dependence as determined by SCID criteria (participants with non-dependent alcohol use disorders/symptoms of alcohol abuse [per DSM-IV] are eligible) (10) any condition that, in the principal investigator and/or study clinician's judgment interferes with safe study participation or adherence to study procedures; (11) not having a cell-phone that can send and receive text messages.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02330419

Layout table for location information
United States, California
Center on Substance Use and Health
San Francisco, California, United States, 94102
Sponsors and Collaborators
University of California, San Francisco
San Francisco Department of Public Health
National Institutes of Health (NIH)
Layout table for investigator information
Principal Investigator: Glenn-Milo Santos, PhD San Francisco Department of Public Health
Layout table for additonal information
Responsible Party: University of California, San Francisco
ClinicalTrials.gov Identifier: NCT02330419    
Other Study ID Numbers: 1DP5OD019809 ( U.S. NIH Grant/Contract )
1DP5OD019809 ( U.S. NIH Grant/Contract )
First Posted: January 5, 2015    Key Record Dates
Last Update Posted: September 28, 2021
Last Verified: September 2021
Keywords provided by University of California, San Francisco:
Additional relevant MeSH terms:
Layout table for MeSH terms
Binge Drinking
Alcohol Drinking
Drinking Behavior
Alcohol-Related Disorders
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Alcohol Deterrents
Narcotic Antagonists
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents