Extended Release Naltrexone Versus Extended Release Buprenorphine With Individuals Leaving Jail

NCT ID: NCT04408313

Last Updated: 2026-01-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2/PHASE3

Total Enrollment

240 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-10-28

Study Completion Date

2026-05-31

Brief Summary

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The proposed study is a Type 1 hybrid effectiveness-implementation trial. Individuals with opioid use disorder in county jails throughout the state of Maryland will be randomly assigned within gender within jail to one of two groups: Arm 1. XR-B (n=120). XR-B in jail followed by 6 monthly injections post-release at a community treatment program. Arm 2. XR-NTX (n=120). One injection of XR-NTX in jail, followed by 6 monthly injections post-release at a community treatment program.

Detailed Description

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This study is a Type 1 hybrid effectiveness-implementation trial. County jails willing to provide extended-release naltrexone (XR-NTX) and extended-release buprenorphine (XR-B) will participate in a randomized controlled trial throughout the state of Maryland, in which 240 incarcerated men and women will be randomly assigned within gender within jail to one of two arms: Arm 1. XR-B (n=120). XR-B in jail followed by 6 monthly injections post-release at a treatment program. Arm 2. XR-NTX (n=120). XR-NTX in jail, followed by 6 monthly injections post-release at a treatment program. In addition to the RCT the investigators will use a learning collaborative to examine the acceptability and feasibility of medications for opioid use disorder (MOUDs). Aim 1. To determine the effectiveness of XR-B compared to XR-NTX in terms of: Primary. (a) pharmacotherapy adherence (number of monthly injections received). Secondary. (b) illicit opioid urine test results; (c) self-reported illicit opioid use; (d) overdose events (non-fatal and fatal); (e) quality of life (i. physical health; ii. mental health); (f) HIV risk behaviors (i. sexual behavior; ii. needle use or sharing); and (g) criminal activity (i. crime days; ii. re-arrest; iii. re-incarceration). Aim 2. To use a learning collaborative involving all 7 RCT county jurisdictions as well as 3 additional counties that selected not to participate in the randomized trial to understand factors related to: (a) acceptability of providing long-acting agonists and antagonists in jail settings; and (b) feasibility of providing medication continuity of care from jail to community treatment providers. Aim 3. Calculate the cost to the correctional health system of implementing an XR-B or XR-NTX program, and determine the relative value of each strategy, including the costs associated with the subsequent interventions in the community, from a state-policymaker and societal perspective.

Conditions

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Opioid-use Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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XR-B

Extended-release buprenorphine

Group Type EXPERIMENTAL

XR-B

Intervention Type DRUG

Individuals will receive extended-release buprenorphine, administered as a subcutaneous injection, is available in seven different dosage strengths for weekly (8, 16, 24, and 32 mg) and monthly (64, 96, and 128 mg) administration by a health care professional.

XR-NTX

Extended-release naltrexone

Group Type ACTIVE_COMPARATOR

XR-NTX

Intervention Type DRUG

Injectable naltrexone will be used, at a dose of 4cc (380mg of naltrexone), administered by intramuscular injection to the buttocks (alternating sides monthly). Individuals will receive monthly injections.

Interventions

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XR-B

Individuals will receive extended-release buprenorphine, administered as a subcutaneous injection, is available in seven different dosage strengths for weekly (8, 16, 24, and 32 mg) and monthly (64, 96, and 128 mg) administration by a health care professional.

Intervention Type DRUG

XR-NTX

Injectable naltrexone will be used, at a dose of 4cc (380mg of naltrexone), administered by intramuscular injection to the buttocks (alternating sides monthly). Individuals will receive monthly injections.

Intervention Type DRUG

Other Intervention Names

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extended-release buprenorphine extended-release naltrexone

Eligibility Criteria

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Inclusion Criteria

* Adult male or female inmates at participating jails who are eligible for release within 120 days
* History of opioid use disorder (meeting DSM-5 criteria of moderate or severe opioid use disorder at the time of incarceration; individuals not meeting the opioid-disorder criterion will be eligible if they were treated in an opioid agonist treatment program during the year before incarceration)
* Suitability for XR-B and/or XR-NTX treatment as determined by medical evaluation
* Willingness to enroll in XR-B or XR-NTX treatment in jail
* Planning to live in one of the 7 participating counties and/or surrounding counties

Exclusion Criteria

* Liver function test levels greater than 4 times normal;
* Active medical illness that may make participation hazardous (e.g., unstable diabetes, heart disease; moderate to severe renal impairment; adequately treated medical conditions are acceptable);
* Conditions or medications that may predispose to QTc prolongation (personal or family history of long QT syndrome, hypokalemia, medications that prolong QTc interval, e.g., macrolide antibiotics, azole antifungal compounds, anti-arrythmics, antipsychotics and antidepressant)
* Untreated psychiatric disorder that may make participation hazardous (e.g., untreated psychosis, bipolar disorder with mania; adequately treated psychiatric disorders and appropriate psychotropic medications will be allowed);
* History of allergic reaction to naltrexone and/or buprenorphine;
* Current chronic pain diagnosis for which opioids are prescribed;
* Pregnancy (for women);
* Breast-feeding (for women);
* Suicidal ideation (within the past 6 months);
* Body Mass Index (BMI) \> 40;
* Inability to pass a study enrollment quiz;
* Currently enrolled in jail-based MOUD pharmacotherapy (methadone, buprenorphine, naltrexone)
* Enrolled in a methadone treatment program in the past 30 days.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Friends Research Institute, Inc.

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Michael S Gordon, DPA

Role: PRINCIPAL_INVESTIGATOR

Friends Research Institute, Inc.

Locations

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Friends Research Institute

Baltimore, Maryland, United States

Site Status

Countries

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United States

References

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Kornor H, Lobmaier PPK, Kunoe N. Sustained-release naltrexone for opioid dependence. Cochrane Database Syst Rev. 2025 May 9;5(5):CD006140. doi: 10.1002/14651858.CD006140.pub3.

Reference Type DERIVED
PMID: 40342086 (View on PubMed)

Other Identifiers

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1UG1DA050077

Identifier Type: NIH

Identifier Source: org_study_id

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