- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05988710
Low-dose Buccal Buprenorphine: Relative Abuse Potential and Analgesia
October 26, 2023 updated by: Daniel Larach, Vanderbilt University Medical Center
The goal of this study is to compare the abuse potential of low-dose equianalgesic buccal buprenorphine to a commonly used full mu opioid receptor (MOR) agonist in a highly controlled experimental setting.
This is a translational study in which healthy participants are phenotyped for psychosocial and Opioid-Use-Disorder-risk-related metrics.
In a within-subjects crossover design, 60 participants will receive a standard postoperative oral oxycodone dose (10 mg), placebo, and 3 different doses of buccal buprenorphine across 5 separate sessions.
Quantitative Sensory Testing (QST) will be used to evaluate alterations in pain responsiveness relative to placebo across buprenorphine doses and oxycodone, and will compare abuse potential (indexed by the standard FDA drug liking metric) following equianalgesic doses of the two drugs.
Study Overview
Status
Recruiting
Conditions
Study Type
Interventional
Enrollment (Estimated)
72
Phase
- Phase 4
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: Daniel Larach, MD, MSTR, MA
- Phone Number: 615-322-6033
- Email: daniel.larach@vumc.org
Study Contact Backup
- Name: Gail Mayo
- Phone Number: 6159361705
- Email: gail.mayo@vumc.org
Study Locations
-
-
Tennessee
-
Nashville, Tennessee, United States, 37069
- Recruiting
- Vanderbilt University Medical Center
-
Contact:
- Gail Mayo
- Phone Number: 6159361705
- Email: gail.mayo@vumc.org
-
Contact:
- Daniel Larach Larach, MD, MSTR, MA
- Phone Number: 615-322-6033
- Email: daniel.larach@vumc.org
-
-
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
- Adult
- Older Adult
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- Intact cognitive status and ability to provide informed consent
- Ability to read and write in English sufficiently to understand and complete study questionnaires
- Age 18-65
- Opioid-naive status (defined as no use of full mu-opioid receptor (MOR) agonist, partial MOR agonist, or mixed agonist/antagonist medications for the prior 3 months by patient report
Exclusion Criteria:
- Liver/kidney disease
- Chronic pain
- Current/prior substance use disorder
- Pregnancy (to avoid fetal drug exposure, with pregnancy tests conducted to confirm eligibility)
- Seizure disorder
- Certain psychiatric conditions (severe depression, bipolar disorder, psychotic disorders)
- Recent use of medications that may interfere with study drug metabolism
- Recent benzodiazepine or opioid use (confirmed via rapid urine screening prior to each lab session)
- The presence of any medical conditions felt by the study physician to render participant unsafe
- Prior allergic reaction or intolerance to oxycodone, buprenorphine, or their analogs
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: Other
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Buccal Buprenorphine 300mcg and oral Placebo
In randomized order (crossover) across 5 laboratory sessions approximately 5 days apart, participants will receive: 1) Buccal buprenorphine 300 mcg and oral placebo, 2) Buccal buprenorphine 600 mcg and oral placebo, 3) Buccal buprenorphine 900 mg and oral placebo, 4) oral immediate-release oxycodone 10mg and oral placebo, or 5) buccal placebo and oral placebo.
|
buprenorphine for 300mcg buccal administration
Placebo for oral administration
|
Experimental: Buccal Buprenorphine 600mcg and oral Placebo
In randomized order (crossover) across 5 laboratory sessions approximately 5 days apart, participants will receive: 1) Buccal buprenorphine 300 mcg and oral placebo, 2) Buccal buprenorphine 600 mcg and oral placebo, 3) Buccal buprenorphine 900 mg and oral placebo, 4) oral immediate-release oxycodone 10mg and oral placebo, or 5) buccal placebo and oral placebo.
|
Placebo for oral administration
buprenorphine for 600mcg buccal administration
|
Experimental: Buccal Buprenorphine 900mcg and oral Placebo
In randomized order (crossover) across 5 laboratory sessions approximately 5 days apart, participants will receive: 1) Buccal buprenorphine 300 mcg and oral placebo, 2) Buccal buprenorphine 600 mcg and oral placebo, 3) Buccal buprenorphine 900 mg and oral placebo, 4) oral immediate-release oxycodone 10mg and oral placebo, or 5) buccal placebo and oral placebo.
|
Placebo for oral administration
buprenorphine for 900mcg buccal administration
|
Active Comparator: Oral immediate release oxycodone 10mg and buccal placebo
In randomized order (crossover) across 5 laboratory sessions approximately 5 days apart, participants will receive: 1) Buccal buprenorphine 300 mcg and oral placebo, 2) Buccal buprenorphine 600 mcg and oral placebo, 3) Buccal buprenorphine 900 mg and oral placebo, 4) oral immediate-release oxycodone 10mg and oral placebo, or 5) buccal placebo and oral placebo.
|
Placebo for buccal administration
Immediate-release oxycodone for 10 mg oral administration
|
Placebo Comparator: Oral placebo and buccal placebo
In randomized order (crossover) across 5 laboratory sessions approximately 5 days apart, participants will receive: 1) Buccal buprenorphine 300 mcg and oral placebo, 2) Buccal buprenorphine 600 mcg and oral placebo, 3) Buccal buprenorphine 900 mg and oral placebo, 4) oral immediate-release oxycodone 10mg and oral placebo, or 5) buccal placebo and oral placebo.
|
Placebo for oral administration
Placebo for buccal administration
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Difference in mean maximum effect score (Emax) of the drug liking visual analog scale (VAS) between oxycodone 10 mg and an equianalgesic dose of buprenorphine
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the drug liking VAS between oxycodone 10 mg and an equianalgesic dose of buprenorphine conditions.
Drug liking VAS is a bipolar scale designed to assess a participant's liking for a given study intervention at the time the question is being asked (that is, at this moment).
It is scored as an integer ranging from 0 (strong disliking) to 100 (strong liking).
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Quantitative sensory testing (QST) thermal pain tolerance in seconds
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Mean time in seconds elapsed from onset of the heat pain stimulus to participants withdrawal from the stimulus.
Heat pain tolerance is an indicator of pain sensitivity.
This will determine the equianalgesic dose of buccal buprenorphine compared to oxycodone 10 mg.
Equivalence to oxycodone will be defined as the buprenorphine does that produces a mean thermal pain tolerance increase within 0.5 standard deviation of the oxycodone.
response.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Difference in mean maximum effect score (Emax) of the drug liking visual analog scale between equianalgesic dose of buprenorphine and placebo conditions
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean maximum effect score (Emax) of the drug liking visual analog scale between equianalgesic dose of buprenorphine and placebo conditions.
Drug liking VAS is a bipolar scale designed to assess a participant's liking for a given study intervention at the time the question is being asked (that is, at this moment).
It is scored as an integer ranging from 0 (strong disliking) to 100 (strong liking).
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean maximum effect score (Emax) of the drug liking visual analog scale between oxycodone 10 mg and placebo conditions
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean maximum effect score (Emax) of the drug liking visual analog scale between oxycodone 10 mg and placebo conditions.
Drug liking VAS is a bipolar scale designed to assess a participant's liking for a given study intervention at the time the question is being asked (that is, at this moment).
It is scored as an integer ranging from 0 (strong disliking) to 100 (strong liking).
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
QST heat pain threshold
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Mean time in seconds elapsed from onset of the thermal stimulus to the point at which heat stimulus is first experienced as painful.
Thermal pain threshold is an indicator of pain sensitivity.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Visual Analog Scale (VAS) pain intensity
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the pain intensity VAS between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
The VAS pain intensity is a measure of experienced pain intensity on 0 to 100 scale when 0 is no pain and 100 is worst pain imaginable.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS pain unpleasantness
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the pain unpleasantness VAS between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
The VAS pain unpleasantness is a measure of experienced pain unpleasantness on 0 to 100 scale, when 0 is no unpleasantness and 100 is most unpleasant imaginable.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
McGill Pain Questionnaire - Short Form
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Mean of maximum McGill Pain Questionnaire - Short Form score between oxycodone 10mg, equianalgesic dose of buprenorphine and placebo.
The score ranges from 0-33 where 0 represents no pain and 33 represents most intense pain.
Positive change values indicate decreased pain responsiveness.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS alertness/drowsiness
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS alertness/drowsiness between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
The VAS alertness/drowsiness assesses alertness and drowsiness following drug administration on 0 to 100 sale, when 0 is extreme drowsiness, 50 is neutral, and 100 is extreme alertness.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS any drug effects
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS any drug effects between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS any drug effects assesses presence of any drug effects felt by participant on 0 to 100 scale, when 0 is no drug effects and 100 is extreme drug effects.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS good effects
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS good effects between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS good effects assesses presence of drug effects characterized as good felt by participant on scale 0 to 100 when 0 is no good drug effects and 100 is extreme good drug effects.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS feeling high
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS feeling high between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS feeling high assesses presence of "feeling high" by participant on 0 to 100 scale when o is not feeling high at all and 100 is feeling extremely high.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS bad effects
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS bad effects between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS bad effects assesses presence of drug effects characterized as bad felt by participant on 0 to 100 scale when 0 is no bad drug effects and 100 is extreme bad drug effects.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
VAS desire to use opioids
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS desire to use opioids between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS desire to use opioids assesses participant's desire to use opioids on a 0-100 scale when 0 is no desire to use opioids and 100 is extreme desire to use opioids.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Opioid Adjective Rating Scale
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Difference in mean Emax of the VAS Opioid Adjective Rating Scale between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo.
VAS Opioid Adjective Rating Scale is a 12 item questionnaire which evaluates common sensory and somatic effects of opioid (e.g., itching, vomiting, sweating, nausea, dry mouth).
Each effect is rated on 0 to 4 scale when 0 is not at all and 4 is extremely.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Temporal summation of pain (TSP)
Time Frame: Baseline through 3.5 hours after study drug administration on each medication condition
|
Change in pain intensity between first and most painful TSP stimuli (mean of two TSP trials) compared between oxycodone 10 mg, equianalgesic dose of buprenorphine and placebo conditions.
Pain intensity will be measured on a 0-10 Numeric Rating Scale when when 0 is no pain and 100 is worst pain imaginable.
|
Baseline through 3.5 hours after study drug administration on each medication condition
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Investigators
- Principal Investigator: Daniel Larach, MD, MSTR, MA, Vanderbilt University Medical Center
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)
October 19, 2023
Primary Completion (Estimated)
October 1, 2026
Study Completion (Estimated)
October 1, 2026
Study Registration Dates
First Submitted
August 1, 2023
First Submitted That Met QC Criteria
August 8, 2023
First Posted (Actual)
August 14, 2023
Study Record Updates
Last Update Posted (Actual)
October 27, 2023
Last Update Submitted That Met QC Criteria
October 26, 2023
Last Verified
October 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Nervous System Diseases
- Neurologic Manifestations
- Neurobehavioral Manifestations
- Perceptual Disorders
- Agnosia
- Physiological Effects of Drugs
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Analgesics, Opioid
- Narcotics
- Narcotic Antagonists
- Buprenorphine
- Oxycodone
Other Study ID Numbers
- 222204
- 1K23DA057387 (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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