rTMS for Stimulant Use Disorders (CTN-0108)

  • End date
    Dec 25, 2024
  • participants needed
  • sponsor
    Medical University of South Carolina
Updated on 25 March 2022


The purpose of the study is to determine feasibility of repetitive transcranial magnetic stimulation (rTMS) for individuals with moderate to severe cocaine or methamphetamine use disorder (CUD/MUD). Potential participants will be age 18-65, and interested in cutting down or stopping use. Participants will be randomized to one of two groups; groups will receive rTMS or sham rTMS (placebo) over the course of an 8-week treatment period, and complete follow-up assessments at the end of treatment, 12, and 16 weeks post-randomization.


The study will be a randomized, double-blind, sham-controlled trial comparing rTMS vs. placebo delivered over an 8-week treatment period. After assessment and inclusion into the study, participants will be randomized to receive up to 30 sessions of either rTMS or placebo treatments. The target minimum number of rTMS/placebo treatments is 20 treatments over 8 weeks. The secondary objective is to gather preliminary data on the efficacy of rTMS for individuals with moderate to severe CUD or MUD. Follow-up visits occur at end of treatment and at 12- and 16-weeks following randomization.

Other study procedures:

Actigraphy: To assess daily sleep quality during weeks 1-8, the ActiGraph wristband device will record, sleep latency, sleep duration, and intervals of waking during the sleep period.

Electroencephalography (EEG): EEG will be obtained after randomization and again at week 4, to explore the potential for EEG to be used as a biomarker of treatment response.

Cognitive-Behavioral Educational Intervention: Participants in both conditions (rTMS and placebo) will be encouraged to participate in a mobile app-based educational intervention based on principles of Cognitive Behavioral Therapy (CBT) for Substance Use Disorder (SUD).

Daily Assessments: Brief, electronic remote surveys will be administered to participants daily until week 16 follow-up time point and will assess use of primary substance of abuse, craving, ability to resist use, overall mood, and self-rated sleep quality.

Urine Drug Screens (UDS): UDS will be collected at screening, randomization, every treatment session, and at follow-up visits.

Urine pregnancy tests: Pregnancy testing for all female participants will be performed at screening, randomization, and monthly during the treatment period.

Physical exam: A physical exam will be performed at screening.

Questionnaires: A battery of study assessments will be completed to further inform findings regarding feasibility and effects of rTMS on individuals with stimulant use disorders.

Condition Cocaine Use Disorder, Methamphetamine Abuse, Cocaine Dependence, Methamphetamine Dependence, Stimulant Use, Stimulant Abuse, Methamphetamine Use Disorder, Cocaine Abuse, Stimulant Use Disorder
Treatment rTMS, Sham (Placebo)
Clinical Study IdentifierNCT04907357
SponsorMedical University of South Carolina
Last Modified on25 March 2022


Yes No Not Sure

Inclusion Criteria

-65, inclusive
Have a diagnosis of moderate or severe Cocaine or Methamphetamine Use Disorder (CUD/MUD) over the past 12 months (as determined by DSM-5 diagnostic criteria)
Have used cocaine or methamphetamine on at least 10 of the last 30 days (based on Timeline Follow-Back)
Be interested in decreasing cocaine and/or methamphetamine use
If female, willing to use appropriate birth control method during the treatment phase of the study
Be able to understand the study procedures and provide written informed consent to participate in the study
If prescribed benzodiazepines or anticonvulsants, must be on a stable dose for at least 4 weeks prior to consent

Exclusion Criteria

A Diagnostic and Statistical Manual (DSM-5) diagnosis of moderate or severe SUD of any substance other than cocaine or methamphetamine based on DSM-5
History of a serious medical disorder that, in the opinion of the Medical Clinician, would make it unsafe to participate in the study or may prevent collection of study data
Is currently engaged in formal SUD treatment
Documented history of unprovoked seizure (lifetime) or any seizure in the past 6 months
Documented history of brain lesion(s) and/or tumor(s)
Metal implants or non-removable metal objects above the waist
Currently pregnant
Lifetime history of prior clinical treatment with TMS
Current or lifetime bipolar disorder
Current psychotic disorder or psychotic depression
Serious risk of homicide or suicide
Are a prisoner or in police custody at the time of eligibility screening
Previously randomized as a participant in the study
Planned admission to a residential treatment facility or other formal SUD treatment program
Unwilling or unable to follow study procedures
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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