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CompletedNCT02567344Updated Aug 2, 2018

Excitatory rTMS to the Left Dorsolateral Pre-Frontal Cortex to Reduce Cannabis-Cue Induced Craving

An interventional study of Repetitive Transcranial Magnetic Stimulation (rTMS) and Sham Repetitive Transcranial Magnetic Stimulation in Cannabis, sponsored by Medical University of South Carolina. Completed. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2018-08-02.

Sponsored by Medical University of South Carolina · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
18
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

This is a double-blind, crossover trial that will recruit a cohort of non-treatment seeking Cannabis use disordered participants. Participants will then undergo either active, or sham rTMS to the LDLPFC, and cue-induced craving, and risky decision making will be assessed.

Read the detailed description

Our primary aims are to determine the effect of a single session of 10 Hz L DLPFC rTMS on cannabis cue induced craving (Aim1), and behavioral tasks of impulsive decision making (Aim2), in non-treatment seeking individuals with Cannabis Use Disorder. The aims of the study will be accomplished by performing a double-blind, sham-controlled crossover trial. Non-Treatment seeking individuals with CUD will be recruited through media advertisements, as well as via a pre-established database of non-treatment seeking individuals who have participated in previous Cannabis trials and agreed to be re-contacted. Interested individuals will undergo a brief phone screen to determine if they meet general inclusion/exclusion criteria, and if so will be invited to meet with study personnel in order to sign informed consent, and undergo a screening visit. There will then be two experimental visits separated by at least one week. During each of these visits participants will undergo either a real, or sham rTMS treatment, as well as a cannabis cue Paradigm. Data on craving as well as on impulsive decision making will be collected before and after each treatment.

02

Conditions studied

  • Cannabis

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Keywords

  • Cannabis
  • rTMS
  • Craving
  • Decision making
03

In context

Marijuana Abuse

517 studies on the registry are indexed under Marijuana Abuse; 114 are open to participants now.

This study's enrollment of 18 is below the median of 60 across 421 interventional studies indexed under Marijuana Abuse.

Browse Marijuana Abuse studies →

Lead sponsor

Medical University of South Carolina is the lead sponsor of 852 studies on the registry; 165 are open to participants now.

Of its 128 completed or terminated interventional studies of FDA-regulated products, 101 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Participants must be able to provide informed consent and function at an intellectual level sufficient to allow accurate completion of all assessment instruments.
  2. Participants must be between the ages of 18 and 60.
  3. Participants must meet DSM-V criteria for Cannabis Use Disorder, with use of at least 20 days/month.
  4. Participants must agree to abstinence from Cannabis for at least 24 hours prior to each visit.
  5. Participants must have a Positive UDS for cannabis (confirming they are regular users), and a negative salivary cannabis test (Confirming no use within 10-14 hours)

Exclusion criteria

Exclusion Criteria:

  1. Participants must not be pregnant and participate in the study.
  2. Participants must not test positive for any substance other than cannabis on UDS.
  3. Participants must not meet criteria for any other Substance Use Disorders with the exception of Nicotine Use Disorder.
  4. Participants must not be on any medications that have central nervous system effects.
  5. Participants Must not have a history of/or current Psychotic disorder.
  6. Participants must not have a history of Dementia or other cognitive impairment.
  7. Participants must not have active suicidal ideation, or suicide attempt within the past 90 days.
  8. Participants must not have any contraindications to receiving rTMS as assessed by the TMS safety sheet.
  9. Participants must not have any unstable general medical conditions.
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
18 participants (actual)

Study arms

  • Experimental
    Active rTMS

    Active rTMS will be delivered to the Left DLPFC at 10Hz. A total of 4000 pulses will be delivered.

    Device: Repetitive Transcranial Magnetic Stimulation (rTMS)

  • Sham comparator
    Sham rTMS

    Sham rTMS will be delivered to the Left DLPFC at 10 Hz using an electronic sham system used in multiple other investigations. A total of 4000 pulses of sham rTMS will be delivered.

    Device: Sham Repetitive Transcranial Magnetic Stimulation

Interventions

  • DeviceRepetitive Transcranial Magnetic Stimulation (rTMS)

    rTMS will be delivered at 110% rMT to the Left DLPFC with 5 seconds on, 10 seconds off for 4000 pulses.

  • DeviceSham Repetitive Transcranial Magnetic Stimulation

    rTMS will be delivered via an electronic sham coil that mimics real rTMS in appearance, sound, and feeling. Pulses will be delivered to the Left DLPFC with 5 seconds on, 10 seconds off for 4000 pulses.

06

What researchers measure

Primary outcomes

  1. Marijuana Craving Questionnaire (MCQ)

    The MCQ will be given before and after a marijuana-cue paradigm, and the primary outcome will be the change score from pre to post.

    Time frame: 15 Minutes

Secondary outcomes

  1. The Balloon Aptitude Response Task (BART)

    The BART will be given pre, and post rTMS. Number of corrected pumps, and number of burst balloons will be collected.

    Time frame: 30 Minutes

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 2, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02567344
Lead sponsor
Medical University of South Carolina
Responsible party
Sponsor
First posted
Oct 2, 2015
Start date
Oct 2015
Primary completion
Mar 2016
Completion
Mar 2016
Last update
Aug 2, 2018

Study contacts

Gregory Sahlem, MD
principal investigator · MUSC department of psychiatry

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2018. You cannot join it, but the record below documents what was studied.

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