Closed-Loop Transcranial Alternating Current Stimulation for the Treatment of Major Depressive Disorder

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age22+
SponsorPulvinar Neuro, LLC

About this trial

The purpose of this research study is to investigate a closed-loop transcranial alternating current stimulation (tACS) device to evaluate its ability to reduce symptoms of major depressive disorder

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

≥ 22 years of age;

with at least moderate symptom severity (HAM-D17 ≥ 17);

who are currently in a depressive episode;

who have used at least 1 antidepressant in the current or previous episode, but have not found adequate symptom relief or who were not able to tolerate medication side effects;

Disqualifiers

Subjects with current / past six months use of an external stimulation device for MDD, including electroconvulsive therapy (ECT), transcranial magnetic stimulation (TMS), cranial electrotherapy stimulation (CES), transcranial direct current stimulation (tDCS), deep brain stimulation (DBS), or other brain or cranial nerve stimulation;

Subjects with (lifetime) history of failure to response to an adequate trial of ECT, TMS, or implanted vagus nerve stimulation;

Subjects who currently receive esketamine, ketamine, or psilocybin treatment

Subjects who are pregnant or of childbearing potential and not using adequate contraception, as determined by the investigator;

Trial design

Design model

Parallel

Treatments tested in this trial

  • Closed-loop tACS

    Device

    Individual alpha tACS

  • Sham Comparator

    Device

    Sham stimulation

Treatment groups

214 Participants
are divided into 3 treatment groups
Group A: Active Closed-loop tACSExperimental treatment 1 intervention
Group B: Sham Closed-loop tACSSham comparator 1 intervention
Group C: Open Label, Active Closed-loop tACS RetreatmentExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Response rates (at least 50% reduction in Hamilton Depression Rating Scale (HDRS) score) at Week 3 Phase 1 Evaluation

Response rates (at least 50% reduction in HDRS-D17 score) (0-52 score range, higher score is worse) in Active vs. Control groups.

Time frame
Timeframe: Baseline to Week 3

Secondary outcomes

1

Change in mean Hamilton Depression Rating Scale (HDRS) Score

Change in mean HDRS-17 Score (0-52 score range, higher score is worse) in Active vs Control groups.

Time frame
Timeframe: Baseline to Week 3
2

The State-Trait Anxiety Inventory (STAI) Score

Change in self-reported anxiety symptoms STAI Trait (score range is 20-80, higher is worse) in Active vs Control groups

Time frame
Timeframe: Baseline to week 3, Phase 1
3

Hamilton Depression Rating Scale (HDRS) Remission Rate

Remission rates (HDRS-17 score ≤ 7) (0-52 score range, higher score is worse) in Active vs Control groups.

Time frame
Timeframe: Baseline to Week 3, Phase 1
4

Difference in change in Hamilton Depression Rating Scale (HDRS) in Active vs control groups between patients with MDD and GAD and patients with MDD and not GAD

Difference in the change in mean HDRS-17 Score (0-52 score range, higher score is worse) in Active vs Control groups between MDD patients with and without a comorbid GAD diagnosis.

Time frame
Timeframe: Baseline to Week 3

Other outcomes

1

Hamilton Depression Rating Scale (HDRS) Score reduction, at study end

Response rates (at least 50% reduction in HDRS-17 score) for patients at their study completion. This will be evaluated by determining the percentage of patients from the active stimulation arm who can be classified as responders either at the phase 1, week 3 assessment OR at the phase 2, week 3 assessment. (0-52 score range, higher score is worse)

Time frame
At the phase 1, week 3 assessment OR at the phase 2, week 3 assessment.

Sponsors and contacts

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