Transcranial Magnetic Stimulation for Adolescents and Young Adults With Cannabis Use Disorder

June 2, 2026 updated by: University of Minnesota
This pilot study will investigate the potential of repetitive transcranial magnetic stimulation (rTMS) to strengthen a neural circuit critical for maintaining abstinence in adolescents and youth with cannabis use disorder (CUD).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
50

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Minnesota
      • Minneapolis, Minnesota, United States, 55455
        • University of Minnesota
        • Contact:

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 15-21 years old
  • For minors, parent/legal guardian able to provide consent and child able to provide assent; for adults, ability to self-consent per MacArthur Competence Assessment Tool for Clinical Research
  • Ability to comply with study procedures
  • Treatment-seeking youth diagnosed with CUD as per the Mini-International Neuropsychiatric Interview (MINI-KID (Sheehan et al., 2010) for 15-17 years old and MINI (Sheehan et al., 1998) for 18-21 years old)
  • Cannabis use 3+ days per week (or 12+ days in the past month) as verified by Timeline Followback (TLFB) (Sobell & Sobell, 1996)
  • Fluent in spoken English

Exclusion Criteria:

  • Medical conditions contraindicated or associated with altered TMS risk profile, including history of intracranial pathology, intracranial lesions, epilepsy or seizure disorders, or individuals with a family history of epilepsy or seizure in a first degree relative, traumatic brain injury, brain tumor, stroke, neurocardiogenic syncope, mania/bipolar disorder, implanted medical devices or metallic objects in the head, current pregnancy or not using effective contraception if capable of becoming pregnant, or any other serious medical condition or contraindication as judged by the study physician; moderate to severe heart disease, pediatric populations with risk factors for neurocardiogenic syncope (history of syncope/presyncope related to noxious stimuli, anxiety, micturation, or posture)
  • Inability to undergo MRI.
  • Diagnosis of psychosis, cognitive disability or active suicidality. The MINI (Sheehan et al., 1998, 2010) will be used to assess current psychiatric comorbidities and the Ask Suicide-Screening Questions (ASQ) will be used to assess suicidality (Horowitz et al., 2012).
  • Primary current alcohol or substance use disorder, except for caffeine or nicotine.

  • Taking a medication with high seizurogenic potential (e.g., clomipramine, tricyclic antidepressants, selective serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, anti-psychotics, lithium, bupropion -e.g. Wellbutrin). Participants taking psychotropic medications will be included if dose is stable for ≥4 weeks with no anticipated changes during the study period. All concurrent treatments will be monitored during the study period.

    • If an individual is currently taking antibiotics that affect the central nervous system such as Fluoroquinolones (Ciprofloxacin, Levofloxacin, Moxifloxacin) or Imipenem, medications that have the potential of lowering seizure threshold, participation in the study will be delayed until 5 days after the last antibiotic dose.
    • If an individual is taking antihistamines (i.e. Benadryl/diphenhydramine), they will be asked to refrain from using the antihistamine for at least 24 hours before the TMS session. If the participant is not able to do so, they will be excluded from the study.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Active rTMS
During TMS, a pulsed magnetic field is produced by a small coil positioned over a targeted area on the scalp, inducing an electric current in the brain that temporarily modulates cortical activity. Repetitive TMS (rTMS) paradigms use trains of pulses to induce cortical effects that outlast the duration of stimulation.
Device: Magstim SuperRapid2
Intermittent burst stimulation (iTBS) bursts of 3 pulses at 30 Hz repeated every 200ms for 2 s (1 train), trains repeat every 10s apart (8s inter-burst interval between trains), 600 total pulses, 70% RMT (190 sec duration)
Sham Comparator: Sham rTMS
All sham participants will be exposed to the same procedures as the active rTMS condition but using the sham air-cooled coil. The sham coil looks and sounds the same as the active coil but it has a shield in it that blocks the magnetic field (so it is not stimulating the brain at all).
Device: Sham rTMS
All sham participants will be exposed to the same procedures as the active rTMS condition but using the sham air-cooled coil. The sham coil looks and sounds the same as the active coil but it has a shield in it that blocks the magnetic field (so it is not stimulating the brain at all).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Feasibility, tolerability, and acceptability of rTMS
Time Frame: Month 4
Daily side-effects reports on each intervention day and an exit interview will be collected.
Month 4
rTMS effects on neural target engagement
Time Frame: Month 4
Pre- and post-intervention resting connectivity fMRI data will be collected to examine changes in LDLPFC-cACC connectivity
Month 4
Changes in CUD recovery metrics
Time Frame: Month 4
Cannabis craving will be measured using a validated self-report scale. Cannabis use will be evaluated during in-person monthly visits across a 3-month follow-up period, using interviewer-administered assessments and urine toxicology. An optional component of the study will include daily smartphone-based brief surveys to remotely track self-reported cannabis craving and use in real time.
Month 4

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Minnesota

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Jazmin Camchong, PhD, University of Minnesota

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 (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2027

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 31, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 31, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 2, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 2, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 9, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 9, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 2, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PSYCH-2026-33908

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

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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