NCT04495673

Brief Summary

The overarching goal of this project is to expand the traditional expertise in non-invasive neuromodulation at the University of Minnesota towards developing novel paired-neuromodulation approaches using transcrancial direct current stimulation (tDCS) for new addiction treatments that support long-term abstinence. This study will investigate whether the pairing of dorsolateral prefrontal cortex (DLPFC) stimulation and cognitive training can enhance functional connectivity between DLPFC and nucleus accumbens (NAcc). We have identified higher functional connectivity between DLPFC and NAcc in alcoholics that have successfully maintained abstinence for extended periods of time (7 years). This paired-neuromodulation approach can potentially be used as a therapeutic intervention to decrease substance use probability in addiction (e.g. opioid use disorder). The long term goal is to develop new addiction treatments that support long-term abstinence in opioid use disorder. The overall objective of this proposal is to enhance functional connectivity between DLPFC and NAcc as a therapeutic intervention to enhance cognition and reduce substance use rates in opioid use disorder.

Trial Health

57
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Trial Health Score

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

Enrollment
9

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2021

Geographic Reach
1 country

1 active site

Status
terminated

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

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 28, 2020

Completed
6 days until next milestone

First Posted

Study publicly available on registry

August 3, 2020

Completed
5 months until next milestone

Study Start

First participant enrolled

January 11, 2021

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 22, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 22, 2022

Completed
3.4 years until next milestone

Results Posted

Study results publicly available

July 10, 2025

Completed
Last Updated

July 10, 2025

Status Verified

June 1, 2025

Enrollment Period

1.1 years

First QC Date

July 28, 2020

Results QC Date

May 30, 2023

Last Update Submit

June 20, 2025

Conditions

Outcome Measures

Primary Outcomes (4)

  • (A1) Average Number of Serious Adverse Events in Active and Sham Groups.

    Safety was defined as the prevalence of Serious Adverse Events for the study. Subjects were monitored for Serious Adverse Events from date of first intervention session until the final follow-up visit (2 months post-intevention). Subjects were monitored using the Symptom Rating Questionnaire (SRQ), Medication/Medical Update Interview, and medical chart review. Serious Adverse Events were defined as: Death, life threatening incidents, hospitalizations (initial or prolonged), disability or permanent damage, congenital anomaly or birth defect, or an event that required intervention to prevent permanent impairment or damage. Mean and standard deviation of Serious Adverse Events was recorded across groups. A lower number indicates fewer Serious Adverse Events.

    2months post-intervention

  • (A2) Activation Levels in Brain Circuits in Active and Sham Groups.

    Brain activation change from pre-intervention to post-intervention was planned to be compard between active tDCS and sham groups. We hypothesized that the active tDCS group will have a larger increase in brain circuit engagement than the sham group and, thus, a better outcome.

    1-week post-intervention

  • (A3) Changes in Scaled Score on Digit Span Task.

    Cognitive performance change was compared between active tDCS and sham groups. Cognitive performance change was defined as improvement on the WAIS-IV Digit Span (DS). Score was calculating by subtracting the DS scaled score at baseline from the DS scaled score at 2-Month Follow Up. We hypothesized that the active tDCS group will have a larger improvement in cognitive performance than the sham group. A higher number indicates a higher impact of cognitive training and, thus, a better outcome. The DS Scaled Score has a range between 1 (min.) and 10 (max). Therefore, the computed difference between two DS Scaled Scores has a range of -9 (min.) to 9 (max.)

    2 months post-intervention

  • (A4) Number of Participants Who Relapsed After Intervention.

    Relapse was defined as any illiciit drug use (whether reported by the patient or reported as a positive drug screen in study or medical records) that occurred at some point between study intervention and the final follow-up visit (2 months post-intervention). Relapse was measured with the Timeline Follow Back questionnaire, saliva drug screen at the study visit, and chart review of urine drug screens. Relapse was coded 0 (did not relapse during the study) or 1 (relapsed during the study). We hypothesized that the active tDCS group will have a lower relapse rate than the sham group. A higher number indicates a higher count of participants with a relapse.

    2 months post-intervention

Secondary Outcomes (1)

  • Changes in Scaled Score on Digit Symbol Task.

    2-months post-intervention

Study Arms (2)

tDCS with Cognitive Training

EXPERIMENTAL

DLPFC stimulation with tDCS with simultaneous cognitive training

Device: Transcranial Direct Current Stimulation (tDCS)Behavioral: Cognitive Training

Sham tDCS with Cognitive Training

ACTIVE COMPARATOR

Sham tDCS with simultaneous cognitive training

Device: Sham Transcranial Direct Current Stimulation (tDCS)Behavioral: Cognitive Training

Interventions

Participants receive 10 sessions (2 5-visit blocks of 46 minutes) of active tDCS to DLPFC (dorsolateral prefrontal cortex)

tDCS with Cognitive Training

Participants receive 10 sessions (1 5-visit block of 46 minutes of active tDCS and 1 5-visit block of sham tDCS)

Sham tDCS with Cognitive Training

Executive functioning tasks

Sham tDCS with Cognitive TrainingtDCS with Cognitive Training

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Current diagnosis of opioid use disorder
  • Enrolled in a methadone treatment program for at least 2 months in Hennepin Healthcare and be clinically stable.
  • Meet the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) diagnostic criteria for opioid use disorder
  • Participants may have current comorbid drug use, but their primary substance use disorder diagnosis must to be based on opioid use.
  • Participants must have the intention to remain in the methadone treatment program until the end of the intervention portion of the study.

You may not qualify if:

  • Any medical condition or treatment with neurological sequelae (i.e. stroke, tumor, loss of consciousness\>30 min, HIV)
  • Head injury resulting in a skull fracture or a loss of consciousness exceeding 30 minutes (i.e., moderate or severe TBI)
  • Any contraindications for tDCS or MRI scanning (tDCS contraindication: actively receiving treatment for seizures or epilepsy; MRI contraindications; metal implants, pacemakers or any other implanted electrical device, injury with metal, braces, dental implants, non-removable body piercings, pregnancy, breathing or moving disorder)
  • Current active psychosis or mania
  • Presence of a condition that would render study measures difficult or impossible to administer or interpret (e.g. current mania, active psychosis)
  • Primary current substance use disorder diagnosis on a substance other than opioid except for caffeine or nicotine
  • Current stimulant use disorder (need to be free of stimulant use for at least 1 month)
  • History of electroconvulsive therapy or cortical energy exposure within the past 12 months, including participation in any other neuromodulation studies
  • incarceration

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Minnesota

Minneapolis, Minnesota, 55455, United States

Location

MeSH Terms

Conditions

Opioid-Related DisordersHeroin DependenceMorphine Dependence

Interventions

Transcranial Direct Current StimulationCognitive Training

Condition Hierarchy (Ancestors)

Narcotic-Related DisordersSubstance-Related DisordersChemically-Induced DisordersMental Disorders

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeuticsConvulsive TherapyPsychiatric Somatic TherapiesBehavioral Disciplines and ActivitiesElectroshockPsychological TechniquesNeurological RehabilitationRehabilitationAftercareContinuity of Patient CarePatient CareHealth ServicesHealth Care Facilities Workforce and Services

Results Point of Contact

Title
Kelvin Lim
Organization
University of Minnesota

Study Officials

  • Kelvin Lim, MD

    University of Minnesota

    PRINCIPAL INVESTIGATOR
  • Jazmin Camchong, PhD

    University of Minnesota

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 28, 2020

First Posted

August 3, 2020

Study Start

January 11, 2021

Primary Completion

February 22, 2022

Study Completion

February 22, 2022

Last Updated

July 10, 2025

Results First Posted

July 10, 2025

Record last verified: 2025-06

Locations