Effects of 10 add-on HF-rTMS treatment sessions on alcohol use and craving among detoxified inpatients with alcohol use disorder: a randomized sham-controlled clinical trial

Addiction. 2023 Jan;118(1):71-85. doi: 10.1111/add.16025. Epub 2022 Sep 7.

Abstract

Background and aims: Alcohol use disorder (AUD) is a chronic disorder with high relapse rates. There are currently few clinical trials of high frequency repetitive transcranial magnetic stimulation (HF-rTMS) to reduce alcohol use among AUD patients, and results are mixed. The current study tested the effect of 10 add-on sessions of HF-rTMS over the right dorsolateral pre-frontal cortex (DLPFC) on alcohol use and craving.

Design: Single-center, single blind sham-controlled parallel-group RCT (n = 80), with 3 and 6 months follow-up.

Setting: Clinical treatment center in Amsterdam, the Netherlands.

Participants: Eighty detoxified and abstinent AUD inpatients in clinical treatment (20 females, average age = 44.35 years).

Intervention: Ten sessions of active or sham HF-rTMS (60 10 Hz trains of 5 sec at 110% motor threshold) over the right DLPFC on 10 consecutive work-days.

Measurements: The primary outcome measure is the number of abstinent days over 6-month follow-up (FU). Secondary outcome measures are craving over 6-month FU (alcohol urge questionnaire and obsessive-compulsive drinking scale), time to first relapse over 6-month FU and grams of alcohol consumed over 6-month FU. Additional outcome measures: full abstinence over 6-month FU and treatment success over 12-month FU.

Findings: HF-rTMS did not affect the number of abstinent days over 6 months FU [sham = 124 ± 65.9 days, active = 115 ± 69.8 days, difference: 9 days, 95% confidence interval (CI) = Poisson model: 0.578-3.547]. Moreover, HF-rTMS did not affect craving (AUQ/OCDS) (sham = 15.38/5.28, active = 17.48/4.75, differences = 2.1/-0.53, 95% CI mixed-effects model = -9.14 to 2.07/-1.44 to 2.40).

Conclusions: There was no clear evidence that high-frequency repetitive transcranial magnetic stimulation over the right dorsolateral pre-frontal cortex treatment has a long-term positive effect on alcohol use or craving as add-on treatment for alcohol use disorder. High treatment response at 6-month follow-up could have limited the possibility to find an effect.

Keywords: Abstinence; alcohol use; alcohol use disorder; craving; neuromodulation; relapse; transcranial magnetic stimulation.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Alcoholism* / therapy
  • Craving / physiology
  • Female
  • Humans
  • Inpatients
  • Prefrontal Cortex / physiology
  • Recurrence
  • Single-Blind Method
  • Transcranial Magnetic Stimulation* / methods
  • Treatment Outcome