About this trial
The aim of this study is to test the hypothesis that low-frequency rTMS (LFR) works as well as the established intermittent thetaburst rTMS (iTBS) treatment for treatment resistant depression (TRD).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
are female or male;
are outpatients;
are voluntary and competent to consent to treatment;
have a DSM 5 diagnosis of MDD,55 single or recurrent confirmed by Mini-International Neuropsychiatric Interview (MINI) version 7.0;
Disqualifiers
have a history of substance use within the last 3 months;
have a concomitant major unstable medical illness;
have active suicidal intent;
are pregnant;
Trial design
Parallel
Treatments tested in this trial
Repetitive Transcranial Magnetic Stimulation
DevicerTMS will employ the MagPro X100/R30 stimulator equipped with the cool-B70 as we used a cool-B70 in our past non-inferiority trial. The dose will be a 120% rMT in accordance to our latest trial using iTBS. The target area to stimulate will be the right dorsolateral prefrontal cortex (DLPFC) for LFR and the left DLPFC for iTBS as established in prior clinical trials. The localization of both targets will follow the well-established procedures for either R-DLPFC or L-DLPFC using a heuristic method.
Intermittent Theta Burst Stimulation (iTBS)
DeviceIntermittent Theta Burst Stimulation (iTBS)
Low Frequency Right (LFR)
DeviceLow Frequency Right (LFR)
Treatment groups
Trial outcomes
Primary outcomes
Depression severity
17 item Hamilton Depression Rating Scale (HDRS-17) Change
Secondary outcomes
Suicidal ideation
Columbia Suicide Severity Rating Scale Screen Version (C-SSRS) Change
Anxiety severity
Hamilton Anxiety Rating Scale (HAM-A) Change
Depression severity
Self-rated 16-item Quick Inventory of Depressive Symptoms (QIDS-16) Change
Sponsors and contacts
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University of British Columbia
Lead sponsor
Centre for Addiction and Mental Health
Collaborator