ClinicalTrials.gg
CompletedNCT04212364Updated Jan 24, 2024

An Evaluation of a Social Network Intervention for Primary and Secondary Prevention of Opioid Overdoses

An interventional study of Peer Education and Narcan Nasal Product in Overdose, sponsored by Johns Hopkins Bloomberg School of Public Health. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-01-24.

Sponsored by Johns Hopkins Bloomberg School of Public Health · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 5 months after the study started (first participant enrolled Mar 2019, registered Aug 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
614
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 72 studies in Drug Overdose with a site in United States — 17 open to participants now, 28 under way, none of them phase 3. Drug Overdose · United States.

Enrollment
9th of 58
614 · median 182
Started
2019
with 9 others
No phase
51 of 72
13 open now
Registered
29th of 72
by date
Lead sponsor
4 of 72
Johns Hopkins Bloomberg School of Public Health

Among the 72 studies in Drug Overdose with a site in United States, this one is the 9th largest by enrollment of the 58 interventional ones that give a count, is one of 10 that started in 2019, is one of 51 with no phase, and was the 29th registered.

Drug Overdose

104 studies on the registry are indexed under Drug Overdose; 22 are open to participants now.

Browse Drug Overdose studies →

Open to participants now

17 of the 72 studies in Drug Overdose with a site in United States are open now. Recruiting first, the newest first:

12 more — sign in →

All 17 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 13 Drug Overdose studies recruiting now, 12 (92%) set no upper age limit and 1 (8%) stops at 75 or younger; 3 take children under 18; 5 take healthy volunteers.

This study: 18 Years and older · all sexes · healthy volunteers too.

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02

Study summary

The purpose of this study is to pilot and implement a peer mentor intervention focused on overdose prevention and care.

The intervention consists of 3 sessions. During the first and second session, each participant will meet individually with a trained staff member. In the 3rd session, the participant will invite a social network member to attend the session, and these 2 participants will meet with a trained staff member.

Read the detailed description

The specific aims of the study are:

  1. Conduct a pilot of an HIV/HCV/overdose prevention and care intervention for people who use opiates.
  2. Evaluate the feasibility of collecting donated drug preparation containers (i.e., cookers) to assess the presence of fentanyl, HCV, and HIV.
  3. Conduct a randomized controlled trial to assess efficacy of the experimental Peer Mentor condition on (a) overdose prevention and care education to drug network members, (b) naloxone availability, and (c) drug treatment readiness and entry.

There are two types of participants: Index participants and network participants. Both type of participant will currently used opiates. Participants will take part in a baseline visit and up to 3 follow-up visits. Index participants will be randomized into the intervention or control arm of the study.

03

Conditions studied

  • Overdose

Browse trials for

Keywords

  • peer education
  • social networks
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Inclusion Criteria for Index participants:

  • self-reported use of opiates including heroin, fentanyl, or prescription opiates to get high at least 2 times in the last two weeks;
  • willing to invite a network member who uses drugs to the study;
  • ages 18-years or older;
  • living in the Baltimore metropolitan region, and
  • not previously enrolled in the study or currently enrolled in another Lighthouse study.

Inclusion Criteria for network participants:

  • self-reported use of illicit injecting or non-injecting opiates at least 2 times in the last two weeks;
  • sees the Index participant 2 or more times in the past week;
  • ages 18 years or older; and
  • living in the Baltimore metropolitan region.

Exclusion Criteria:

  • Index participants may not take part in the study as a Network participant.
  • Network participants may not take part in the study as an Index participant.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
614 participants (actual)

Study arms

  • Experimental
    Peer Education

    * During Session 1, participants will be trained in Peer Education and how to use Nasal Narcan. They will be given two Nasal Narcan kit that includes 2 doses. One kit if for their use and one kit is to give someone in their social network after they have trained them in how to use it. * A week after Session 1, participants will be scheduled for Session 2. * During session 1 and 2 participants, Index participants will be taught information and skills pertaining to overdose prevention and response and how to train network members in overdose prevention and response. * At the 2nd session, index participants will be given 1 coupon to give to 1 member from their social network to attend Session 3. * Session 3 will be a dyad session where Index participants will use their peer mentors' skills to train their network member in overdose prevention and response. * Index participants will also be invited to up to 3 Booster Session (monthly) after they complete Sessions 1-3.

    Behavioral: Peer Education · Drug: Narcan Nasal Product

  • Active comparator
    Standard of care

    * Participants randomized to this condition will participate in one 1-hour session. This session will be an individual session where the participant will meet with a trained staff member in a private room at the Lighthouse. * This session will be standard overdose prevention and response information. Participants will also be trained in Narcan administration. Participants will be given 1 nasal Narcan kit. * At the end of this session, participants will be asked to refer a network member to the study for survey visits

    Drug: Narcan Nasal Product

Interventions

  • BehavioralPeer Education

    In this intervention, people who use opiates will be trained to be peer educators.

    Also known as: Experimental arm

  • DrugNarcan Nasal Product

    All study participants will be trained in how to use nasal Narcan and they will receive a nasal Narcan kit.

06

What researchers measure

Primary outcomes

  1. Network Enrollment

    The question will be: How many people in their social network did Index participants recruit to the study? Participants provide a number of 0 or higher.

    Time frame: 6 months

Secondary outcomes

  1. Drug treatment entry

    The question will be: In the past 12 months, did you enroll in a drug treatment program including a medically assisted treatment program? The response options are yes and no.

    Time frame: 12 months

  2. Overdose Risk

    Change in risk will be measured by a score that includes frequency of naloxone availability when using opiates, testing drugs before injecting, and drug use alone. Higher scores will indicate increased overdose risk. Scores will be measured from 0-9

    Time frame: 12 months

07

Study locations

1 site
  • Lighthouse Studies at Peer Point
    Baltimore, Maryland 21205, United States
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2019 to primary completion in Dec 2023, 57 months.

Of 47 non-industry interventional studies with no phase under Drug Overdose, half reached primary completion within 31 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 49. This study's 57 months is above that.

Counting every sponsor, half of 47 studies reached it within 31 months; a quarter within 13 and three quarters within 49.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 27, 2019
First posted
Dec 27, 2019
StartActual
Mar 15, 2019
Primary completionActual
Dec 29, 2023
CompletionActual
Dec 31, 2023
Last update
Jan 24, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 24, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04212364
Responsible party
Sponsor
First posted
Dec 27, 2019
Start date
Mar 15, 2019
Primary completion
Dec 29, 2023
Completion
Dec 31, 2023
Last update
Jan 24, 2024

Study contacts

Carl A. Latkin, PhD
principal investigator · Johns Hopkins Bloomberg School of Public Health

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2024. You cannot join it, but the record below documents what was studied.

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