Skip to content

Neuroimaging of Opioid Phase (OPAL)

Neurobiological Consequences of Long-Term Opioid Therapy in the Brain and Spinal Cord

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05905419
Acronym
OPAL
Enrollment
140
Registered
2023-06-15
Start date
2023-06-01
Completion date
2027-06-30
Last updated
2026-06-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Pain, Opioid Use

Keywords

fibromyalgia, women, brain, functional MRI, opioid, opiate, narcotic, chronic pain, pain

Brief summary

The purpose of this study is to compare activity in the brains of female adults with chronic pain and/or opioid use, and healthy female adults that may help to develop new and targeted treatments for adults with chronic pain and alternatives to opioid therapy.

Detailed description

The objective of the study is to determine differences in neurophysiology and behavior during different phases of opioid use in patients. Study activities will include neuroimaging (MRI and fMRI), behavioral tasks, sensory testing, blood draws, and questionnaires. The neuroimaging data will be analyzed using specialized software; data from questionnaires, sensory testing, and behavioral task performance will be analyzed using standard statistical software. Risks and safety concerns include standard, minimal risks associated with MRI scans, sensory testing, blood draws, and confidentiality.

Interventions

OTHEROpioid Phase

Opioid-taking patients are assigned to take their prescribed opioid medication before ("peak" opioid phase) during 1 scan and after ("trough" opioid phase) during the other MRI scan

Sponsors

Duke University
Lead SponsorOTHER
National Institutes of Health (NIH)
CollaboratorNIH
National Institute on Drug Abuse (NIDA)
CollaboratorNIH

Study design

Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

for Healthy Controls: 1. female and ages 18+ 2. ability to read/understand English and give consent to participate 3. no current or history of chronic pain 4. not regularly taking any pain-relieving or mood-altering medications (per PI discretion) 5. absence of use of opioid medications Inclusion Criteria for Individuals with Chronic Pain: 1. female and ages 18 + 2. ability to read/understand English and give consent to participate 3. self-reported or physician diagnosis of fibromyalgia and/or chronic pain 4. current use of opioid medication(s) for inclusion in the opioid patient group -OR- absence of use of opioid medications for inclusion in the non-opioid patient group

Exclusion criteria

(for both groups): 1. limited ability to participate fully in behavioral tasks, longitudinal follow-up 2. MRI contraindication 3. any factors that at the discretion of the investigators would adversely affect the participant or the integrity of the study 4. male

Design outcomes

Primary

MeasureTime frameDescription
Characterize brain fMRI-based activity related to neurobiological consequences of opioid therapyDuring study visits up to 4 weeks apartCompare brain fMRI-based response to reward stimuli during a monetary incentive delay (MID) task and functional connectivity of brain reward circuitry during resting state.

Secondary

MeasureTime frameDescription
Characterize spinal cord fMRI-based activity related to neurobiological consequences of opioid therapyDuring study visits up to 4 weeks apartCompare spinal cord fMRI-based response and resting-state functional connectivity.

Countries

United States

Contacts

CONTACTHAPN Lab Manager
chronicpainresearch@duke.edu919-684-2758
CONTACTAngelina Xiong, BS
angelina.xiong@duke.edu919-684-3136
PRINCIPAL_INVESTIGATORKatherine T Martucci, PhD

Duke University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 4, 2026