- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05027919
Assessing a Clinically-meaningful Opioid Withdrawal Phenotype
February 27, 2024 updated by: Johns Hopkins University
Evaluate individual differences in the expression of opioid withdrawal symptoms in persons with opioid use disorder (OUD) while completing a clinically-indicated medication taper.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Detailed Description
Individuals who have opioid use disorder and are interested in being tapered off of opioids will be admitted to a residential research unit for an 11-day period.
All participants will be maintained on morphine for 5 days.
During this period participants will complete 2 sessions (on two different days) wherein participants will receive an intramuscular injection of naloxone to precipitate a short withdrawal syndrome.
Participants will take a capsule prior to both sessions that will contain either placebo or the opioid withdrawal medication lofexidine.
Beginning on day 6 participants will be tapered off of morphine using lofexidine (as clinically indicated).
At the end of the study all participants will be able to transition to buprenorphine maintenance or receive oral naltrexone and an injection of Vivitrol (extended release naltrexone), consistent with standard of care practices.
Investigators will collect a variety of biological samples and questionnaire ratings during the study and primary outcomes will be measures of withdrawal collected throughout the study.
Investigators will use these data to learn more about why individuals express opioid withdrawal symptoms differently, which will help inform how to change current treatment practices to be more effective for persons with OUD.
Study Type
Interventional
Enrollment (Estimated)
60
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Kelly E Dunn, Ph.D, M.B.A.
- Phone Number: 410-550-2254
- Email: kdunn9@jhmi.edu
Study Contact Backup
- Name: Breanna Labos
- Email: blabos1@jhmi.edu
Study Locations
-
-
Maryland
-
Baltimore, Maryland, United States, 21224
- Recruiting
- Johns Hopkins University Bayview Medical Campus
-
Contact:
- Kelly E Dunn, PhD, MBA
- Phone Number: 410-550-2254
- Email: kdunn@jhmi.edu
-
Principal Investigator:
- Kelly E Dunn, PhD, MBA
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 65 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- 18 years - 65 year old
- Opioid-positive urine sample
- Current opioid use disorder with evidence of physical dependence
- Interest in undergoing opioid taper
Exclusion Criteria:
- Evidence of physical dependence on alcohol or benzodiazepines that requires medical intervention
- Being pregnant or breastfeeding
- Enrolled in methadone or buprenorphine maintenance treatment
- Clinically significant hypotension (<90/60mmHg) or bradycardia (<45bpm)
- History of myocardial infarction
- Subjects who are positive for hepatitis B surface antigen and/or hepatitis C antibody with liver function tests outside the normal range (persons with a positive hepatitis C antibody and normal liver functions tests are NOT excluded from the study)
- Significant mental health or physical disorder, or life circumstances, that is expected to interfere with study participation
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Within-subject design
All participants will undergo the same study design, which includes morphine stabilization (days 1-5), two naloxone challenges (scheduled during morphine stabilization), lofexidine-assisted taper (days 6-10), and transition to aftercare (day 11).
|
30mg subcutaneous injections of morphine 4 times daily on days 1 through 5.
0.4mg naloxone injection during the Naloxone challenge + pretreatment with oral lofexidine (25% of max daily dose scheduled during lofexidine taper)
0.4mg naloxone injection during the Naloxone challenge
Oral Lofexidine dosed per FDA label (4 times daily) on days 6 through 10.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Withdrawal severity during lofexidine taper
Time Frame: Days 6 through 10
|
Withdrawal severity as assessed by the Subjective Opioid Withdrawal Scale.
(The score range is 0 through 64) with higher score indicating more severe withdrawal.
|
Days 6 through 10
|
Withdrawal severity during naloxone challenge
Time Frame: Days 1 through 5
|
Withdrawal severity as assessed by the Subjective Opioid Withdrawal scale scores (The range is 0 through 64) with higher score indicating more severe withdrawal.
Collected during two naloxone challenges (pretreatment with lofexidine and pretreatment with placebo).
|
Days 1 through 5
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Kelly E Dunn, Ph.D, M.B.A., Johns Hopkins University
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 1, 2022
Primary Completion (Estimated)
November 30, 2025
Study Completion (Estimated)
February 28, 2026
Study Registration Dates
First Submitted
August 24, 2021
First Submitted That Met QC Criteria
August 24, 2021
First Posted (Actual)
August 31, 2021
Study Record Updates
Last Update Posted (Actual)
February 29, 2024
Last Update Submitted That Met QC Criteria
February 27, 2024
Last Verified
February 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Mental Disorders
- Chemically-Induced Disorders
- Substance-Related Disorders
- Narcotic-Related Disorders
- Opioid-Related Disorders
- Substance Withdrawal Syndrome
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Central Nervous System Depressants
- Autonomic Agents
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Analgesics, Opioid
- Narcotics
- Narcotic Antagonists
- Sympatholytics
- Naloxone
- Morphine
- Clonidine
- Lofexidine
Other Study ID Numbers
- IRB00279895
- 1R01DA052937 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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