Trial results for a study investigating transcranial direct current stimulation (tDCS) therapy for bipolar depression were posted on ClinicalTrials.gov on 2025-08-14, indicating a clinical response in 34 participants.
Background
Bipolar disorder is a severe and disabling condition characterized by significant mood fluctuations, including episodes of depression and mania or hypomania. The depressive phase of bipolar disorder can be particularly challenging to treat, often requiring combinations of medications, yet full recovery remains infrequent for many individuals. The course of illness is highly heterogeneous, varying significantly between individuals and throughout a person's lifetime. Novel brain stimulation treatments, such as transcranial direct current stimulation (tDCS), are being explored as potential therapeutic options, including for home-based treatment, to address the unmet needs in managing bipolar depression.
Trial design
This completed study, designated as Phase NA, enrolled 44 participants. The trial investigated conditions including Depression, Bipolar, Bipolar Disorder, Mood Disorders, and Mental Disorder. The intervention studied was transcranial direct current stimulation (tDCS), provided as a potential home-based treatment for bipolar depression.
Key results
The trial reported several key measurements related to the efficacy and participant experience with transcranial direct current stimulation:
- The number of participants with clinical response at 6 weeks following the course of tDCS treatment was 34 participants.
- Participant retention at the end of the treatment was 41 participants.
- The number of participants who completed Participant Acceptability Questionnaire Scales was 41 participants.
- The MADRS (Montgomery-Åsberg Depression Rating Scale) remission rate was observed in 21 participants.
What this means
The posted results provide initial data on the application of transcranial direct current stimulation (tDCS) for bipolar depression. The findings indicate that a notable proportion of participants, specifically 34 out of the 44 enrolled, demonstrated a clinical response to the tDCS treatment. Furthermore, 21 participants achieved remission based on the MADRS scale. High participant retention, with 41 participants completing the treatment and acceptability questionnaires, suggests that tDCS may be a feasible and acceptable intervention for this patient population. These results contribute to the understanding of tDCS as a potential therapeutic option for bipolar depression.
Source
The information regarding these trial results was obtained from ClinicalTrials.gov, a public database of clinical studies. The results for the study NCT05436613, titled "Transcranial Direct Current Stimulation Therapy for Bipolar Depression", were posted on 2025-08-14 on clinicaltrials.gov.