NCT04603417

Brief Summary

This study is designed to find behavioral and neurophysiological correlates of pain avoidance behavior among chronic pain patients, controlling for risk for opioid use disorder. Further, traits and risk factors that contribute to pain avoidance behavior will be investigated. The knowledge gained will broaden the current understanding of mechanisms involved in pain avoidance behavior in chronic pain patients, and help devise novel interventions.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
63

participants targeted

Target at P50-P75 for not_applicable chronic-pain

Timeline
Completed

Started Aug 2020

Longer than P75 for not_applicable chronic-pain

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 15, 2020

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

September 30, 2020

Completed
26 days until next milestone

First Posted

Study publicly available on registry

October 26, 2020

Completed
3.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 30, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 30, 2024

Completed
Last Updated

June 27, 2025

Status Verified

June 1, 2025

Enrollment Period

3.7 years

First QC Date

September 30, 2020

Last Update Submit

June 24, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Magnetoencephalography (MEG)/Electroencephalography (EEG)

    Brain oscillations during pain avoidance behavior

    year1-5

  • Temperament and Character Inventory

    Traits related to pain avoidance behavior

    year1-5

Study Arms (2)

Patients

OTHER

Patients with CRPS diagnosis

Diagnostic Test: Electroencephalography (EEG)/Magnetoencephalography (MEG)/MRI

Controls

OTHER

Healthy controls with known Neurological Disorders

Diagnostic Test: Electroencephalography (EEG)/Magnetoencephalography (MEG)/MRI

Interventions

This cross-sectional study will present the participants with an instrumental pain avoidance learning task, while we record continuous Magnetoencephalography (MEG) brain signals, and other autonomic measurements. All patients will complete behavioral, neuropsychological and pain assessments to rate their current pain, disability, fear, anxiety, and depression using standardized scales.

Also known as: Behavioral
ControlsPatients

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • years and older
  • Diagnosis of CRPS I, CRPS II
  • Six months or more of medically refractory severe pain
  • Average daily pain for the past 30 days reported as ≥ 5 on a 0 - 10 scale
  • Presence of allodynia
  • Unilateral pain or pain affecting predominantly one extremity. Predominantly will be operationally defined at \>=75 of pain on one extremity.
  • Willingness to complete behavioral, clinical and neurophysiological measurement procedures
  • Able to provide informed consent
  • Able to undergo structural brain MRI

You may not qualify if:

  • years and younger
  • All other pain diagnosis
  • Less than six months or more of medically refractory severe pain
  • Average daily pain for the past 30 days reported as \< 5 on a 0 - 10 scale
  • Absence of allodynia
  • Bilateral pain
  • Unwillingness to complete behavioral, clinical and neurophysiological measurement procedures
  • Unable to provide informed consent
  • Claustrophobic or unable to undergo MRI, MEG or unsafe to undergo MRI (i.e. due to MRI unsafe medical implants).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Cleveland Clinic

Cleveland, Ohio, 44195, United States

Location

Related Publications (3)

  • Roy M, Shohamy D, Daw N, Jepma M, Wimmer GE, Wager TD. Representation of aversive prediction errors in the human periaqueductal gray. Nat Neurosci. 2014 Nov;17(11):1607-12. doi: 10.1038/nn.3832. Epub 2014 Oct 5.

    PMID: 25282614BACKGROUND
  • Gopalakrishnan R, Burgess RC, Malone DA, Lempka SF, Gale JT, Floden DP, Baker KB, Machado AG. Deep brain stimulation of the ventral striatal area for poststroke pain syndrome: a magnetoencephalography study. J Neurophysiol. 2018 Jun 1;119(6):2118-2128. doi: 10.1152/jn.00830.2017. Epub 2018 Jan 31.

    PMID: 29384450BACKGROUND
  • Gopalakrishnan R, Sonneborn C, Baillet S, Machado AG, Wager TD, Roy M. Neurophysiological encoding of aversive prediction errors. Pain. 2025 Jul 16. doi: 10.1097/j.pain.0000000000003712. Online ahead of print.

MeSH Terms

Conditions

Chronic Pain

Interventions

ElectroencephalographyFunctional Laterality

Condition Hierarchy (Ancestors)

PainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Diagnostic Techniques, NeurologicalDiagnostic Techniques and ProceduresDiagnosisElectrodiagnosisDominance, CerebralNervous System Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Hubert Fernandez, MD

    The Cleveland Clinic

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Staff Scientist

Study Record Dates

First Submitted

September 30, 2020

First Posted

October 26, 2020

Study Start

August 15, 2020

Primary Completion

April 30, 2024

Study Completion

April 30, 2024

Last Updated

June 27, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will not share

Locations