Deep-brain Magnetic Stimulation (DMS) in the Treatment of Major Depressive Disorder

Not Applicable

Completed

• Conditions: Major Depressive Disorder
• Interventions: Device: High frequency stimulation; Device: Low frequency stimulation

• Registration Number: NCT02184221
• Lead Sponsor: Capital Medical University

Brief Summary

Transcranial magnetic stimulation (TMS) is an effective alternative for pharmacotherapy in major depressive disorder, but the effectiveness is not clear due to stimulated region, frequency and intensity of magnet field. Standard TMS techniques only can stimulate superficial cortical areas as the electric field decreases rapidly as a function of tissue depth，while depression is also interconnected with deeper neuronal regions. Deep-brain magnetic stimulation (DSM, or deep TMS, DTMS) allows stimulation of deeper cortical regions. Previous research has demonstrated that alpha frequency (8-13 Hz) EEG activity may have particular relevance to the response to antidepressants, and reduction of alpha frequency (8-13 Hz) could lead to negative symptoms. It has been reported that both alpha frequency and low-field magnetic stimulation could improve depressive symptoms.

The objective of this study is to compare the effectiveness of the two different parameters of DMS in the treatment of major depressive disorder. The changes of brain derived neurotropic factor (BDNF) are also investigated to make a relevant analysis of the improvement of depressive symptoms.

Detailed Description

The study is designed as randomized, double-blinded, active-controlled trial in major depressive disorder.

Patients will be male or female, 18 to 60 years of age, right-handed, outpatient or inpatient status, with diagnosis of major depressive episode (single or recurrent) by DSM-IV. The HAMD-17 total score is no less than 18 at enrollment. The patients should be drug free at least 30 days before entering the trial. The eligible patients are randomized to one of the two treatment groups using a 1:1 ratio for the alpha frequency (high frequency) and 0.5Hz (low frequency) groups.

Throughout the course of the study, DMS sessions are administered by trained physicians for 20 minutes at a time, with 5 sessions per week, during 6 consecutive weeks. Raters who are blinded to the treatment arm perform evaluations. The effective outcome is assessed by the HAMD-17 and HAMA every two weeks including randomization. Serum BDNF level are also tested at each visits (Week 0, 2, 4 and 6). The safety in this study will be assessed by adverse event reporting, clinical laboratory measurements and physical examinations.

Primary efficacy measure will be assessed based on the decrease of HAMD-17 from randomization to endpoint (Week 6).

Study Timeline

• Study Start: 2010-05
• Primary Completion: 2011-01
• Study Completion: 2011-04
• Study First Submitted: 2014-06-30
• Study First Submitted QC: 2014-07-03
• Study First Posted: 2014-07-09
• Status Verified: 2017-08
• Last Update Submitted: 2017-08-30
• Last Update Posted: 2017-08-31

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 22

Inclusion Criteria

• Has given written informed consent.
• Aged from 18 to 60 years old.
• Has a diagnosis of major depressive disorder by DSM-IV criteria.
• HAMD-17 ≥ 18.
• Right-handed.
• Be drug free at least 30 days at randomization.

Exclusion Criteria

• Current Axis I primary psychiatric diagnosis other than major depressive disorder.
• Organic mental disease, including mental retardation.
• History of clinically significant disease, including any cardiovascular, hepatic, renal, respiratory, hematologic, endocrinologic, or neurologic disease, or clinically significant laboratory abnormality that is not stabilized or is anticipated to require treatment during the study.
• Subjects receiving an investigational agent (including different formulation and generic agents of investigational drug) in the previous 3 months prior to screening.
• Women in pregnancy or lactation, or female of child bearing potential without appropriate birth control measures.
• Has received ECT or MECT within 3 months prior to screening.
• Significant risk of suicidal and/or self-harm behaviors.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
High frequency stimulation	High frequency stimulation	alpha burst, 8\~12Hz, run 2 seconds, rest 8 seconds, lasts 20 minutes each time
Low frequency stimulation	Low frequency stimulation	0.5Hz, run 0.5 seconds, rest 1.5 seconds, lasts 20 minutes each time

Primary Outcome Measures

Name	Time	Method
Improvement of Depression	From randomization to endpoint(Week 6)	the Change of 17-item Hamilton Depression Scale (HAMD-17) total score

Secondary Outcome Measures

Name	Time	Method
Safety outcome 1	From enrollment to endpoint (Week 6)	The incidence and nature of adverse events
Safety outcome 2	From randomization to endpoint (Week 6)	The number of subject withdrawal due to adverse events
Remission rate	From randomization to endpoint (Week 6)	The proportion of subjects at endpoint with HAMD-17≤7
Improvement of Anxiety	From randomization to endpoint (Week 6)	the Change of Hamilton Anxiety Scale (HAMA) total score
Response rate	From randomization to endpoint (Week 6)	The proportion of subjects at endpoint with the reduction of HAMD-17 total score\>=50%

Trial Locations

Locations (1)

Beijing Anding Hospital; 🇨🇳 Beijing, Beijing, China