Two Brain Stim Methods Better Than One for Depression?

TOPLINE:

Combining transcranial direct current stimulation (tDCS) and repetitive transcranial magnetic stimulation (rTMS) was associated with a greater reduction in symptoms of major depressive disorder (MDD) than either treatment alone, a new study showed.

METHODOLOGY:

• Researchers conducted a double-blind, sham-controlled randomized clinical trial from 2021 to 2023 at three hospitals in China with 240 participants with MDD (mean age, 32.5 years; 58% women).
• Participants received active tDCS + active rTMS, sham tDCS + active rTMS, active tDCS + sham rTMS, or sham tDCS + sham rTMS with treatments administered five times per week for 2 weeks.
• tDCS was administered in 20-minute sessions using a 2-mA direct current stimulator, whereas rTMS involved 1600 pulses of 10-Hz stimulation targeting the left dorsolateral prefrontal cortex. Sham treatments used a pseudostimulation coil and only emitted sound.
• The primary outcome was change in the 24-item Hamilton Depression Rating Scale (HDRS-24) total score from baseline to week 2.
• Secondary outcomes included HDRS-24 total score change at week 4, remission rate (HDRS-24 total score ≤ 9), response rate (≥ 50% reduction in HDRS-24 total score), and adverse events.

TAKEAWAY:

• The active tDCS + active rTMS group demonstrated the greatest reduction in mean HDRS-24 score (18.33 ± 5.39) at week 2 compared with sham tDCS + active rTMS, active tDCS + sham rTMS, and sham tDCS + sham rTMS (P
• Response rates at week 2 were notably higher in the active tDCS + active rTMS group (85%) than in the active tDCS + sham rTMS (30%) and sham tDCS + sham rTMS groups (32%).
• The remission rate at week 4 reached 83% in the active tDCS + active rTMS group, which was significantly higher than the remission rates with the other interventions (P
• The treatments were well tolerated, with no serious adverse events, seizures, or manic symptoms reported across all intervention groups.

IN PRACTICE:

This trial “was the first to evaluate the safety, feasibility, and efficacy of combining tDCS and rTMS in treating depression. Future studies should focus on investigating the mechanism of this synergistic effect and improving the stimulation parameters to optimize the therapeutic effect,” the investigators wrote.

SOURCE:

This study was led by Dongsheng Zhou, MD, Ningbo Kangning Hospital, Ningbo, China. It was published online on November 13 in JAMA Network Open.

LIMITATIONS:

The brief treatment duration involving 10 sessions may have been insufficient for tDCS and rTMS to demonstrate their full antidepressant potential. The inability to regulate participants’ antidepressant medications throughout the study period presented another limitation. Additionally, the lack of stratified randomization and adjustment for center effects may have introduced variability in the results.

DISCLOSURES:

This study received support from multiple grants, including from the Natural Science Foundation of Zhejiang Province, Basic Public Welfare Research Project of Zhejiang Province, Ningbo Medical and Health Brand Discipline, Ningbo Clinical Medical Research Centre for Mental Health, Ningbo Top Medical and Health Research Program, and the Zhejiang Medical and Health Science and Technology Plan Project. The authors reported no conflicts of interest.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.