A Study to Test Whether BI 1356225 Improves Impulsive Behavior in People With Opioid Use Disorder Who Are Taking Buprenorphine

Stopped early · Phase 1 · Has a placebo group

Conditions studied: Opioid Use Disorder

In brief

This study is open to people between 18 and 65 years of age with opioid use disorder. Opioid use disorder is also called opioid addiction or opioid dependence. People can join the study if they currently take a medicine called buprenorphine. People with opioid dependence can act on impulse, which can lead to risky behaviours. The purpose of this study is to find out whether a medicine called BI 1356225 improves impulse control in people with opioid dependence. Participants are put into 2 groups by chance. One group takes BI 1356225 tablets and the other group takes placebo tablets. Placebo tablets look like BI 1356225 tablets but do not contain any medicine. Participants take a tablet once a day for 8 days. All participants also continue taking buprenorphine. Participants are in the study for up to 6 weeks. During this time, they visit the study site 3 times. At visit 2, participants stay at the study site for 9 nights. Doctors test participants' impulsivity using tasks or games on a computer and questionnaires. The results are compared between the 2 groups to see whether the treatment works. The doctors also regularly check participants' health and take note of any unwanted effects.

Key facts

Study ID: NCT06628622
Run by: Boehringer Ingelheim
People needed: 12
Starts: 2025-01-27
Expected to finish: 2026-07-16
Last updated by the study team: 2026-07-31

Who can join

Age: 18 and older, up to 65. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Male and female participants, 18 to 65 years of age, both inclusively, at the time of consent
Meet current diagnostic and statistical manual of mental disorders, fifth edition (DSM-5) criteria for opioid use disorder, of at least moderate severity within the 12 months prior to screening
Currently engaged in medications for opioid use disorder (MOUD) treatment with one of the following regimens:
buprenorphine/naloxone sublingual film total daily dose ranging from 8 mg/2 mg to 24 mg/6 mg for at least 2 weeks at screening OR
buprenorphine/naloxone sublingual tablet from 5.7 mg/1.4 mg to 17.1 mg/4.3 mg total daily dose for at least 2 weeks at screening OR
buprenorphine sublingual tablet from 8 mg to 24 mg total daily dose for at least 2 weeks at screening OR
on depot injectable buprenorphine for at least 5 weeks at screening, with at least 1 week since last depot buprenorphine injection
Have a current MOUD prescription in accordance with inclusion criterion 3 and a positive urine drug screen for buprenorphine during screening and upon presenting for randomization to document buprenorphine use
Willingness to abstain from using alcohol for 24 hours (h) and all other drugs of abuse for 72 h prior to Day 1 and through discharge from the trial site on Day 9
Women of child-bearing potential must be able and willing, as confirmed by the investigator, to use highly effective methods of contraception
Further inclusion criteria apply.

You may not qualify if…

Lifetime diagnosis of schizophrenia, schizoaffective disorder, schizophreniform disorder, bipolar I disorder, delusional disorder, or autism spectrum disorder as confirmed by the mini international neuropsychiatric interview (MINI) at the screening visit
Moderate or severe substance use disorder other than opioid use disorder (OUD) within the 6 months prior to screening (excluding tobacco, caffeine, and moderate stimulant use)
Severe stimulant use disorder within the 3 months prior to screening
Any other psychiatric disorder that is not currently stable in symptoms and treatment. Stable is defined as having no significant changes in symptom acuity or treatment (medication or psychotherapy treatment) in the 8 weeks prior to randomization
Score of ≥20 on the Montgomery-Åsberg Depression Rating Scale (MADRS)
Positive results on a urine drug screen for ≥3 drugs (not counting buprenorphine or TCAs) at screening. In the case of a positive drug screen for 1 or 2 agents, if the participant does not meet the exclusion criteria regarding substance use disorder for these compounds, they may be included if the investigator determines that use will not be an impediment to trial participation or accurate data collection
Any positive result on a urine drug screen (not counting buprenorphine, TCAs, or cannabis) at admission to the trial site on Day -1
Intoxication at screening or randomization, as determined by clinical exam and breathalyzer
Further exclusion criteria apply.

Where it is running

Collaborative Neuroscience Research, LLC, Los Alamitos — Los Alamitos, California, United States
University of California Los Angeles — Los Angeles, California, United States
iResearch Atlanta — Decatur, Georgia, United States
Hassman Research Institute-Marlton-66897 — Marlton, New Jersey, United States
Virginia Commonwealth University — Richmond, Virginia, United States

Full record on ClinicalTrials.gov

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