Depressive Disorder, Treatment-Resistant Clinical Trial
Official title:
Using Multiple Brain-based Biomarkers to Validate and Predict Response to Theta Burst Stimulation as a New Treatment for Major Depressive Disorder
This study investigates the brain-based biomarkers of treatment response to accelerated theta burst stimulation (aTBS) in patients with Major Depressive Disorder resistant to pharmacological treatment(MDD) in an open label design.
Theta burst stimulation (TBS) is a newer form of rTMS which requires less stimulation time and produces longer lasting post-stimulation effects in the cerebral cortex (4). It has been shown to be effective in inducing synaptic plasticity and has similar or better efficacy in treating depression compared to rTMS (4).Newer accelerated TBS (aTBS) protocols that condense stimulation sessions down to several days rather than weeks have shown similar response rates when compared to prolonged TBS protocols, also with similar tolerability and safety. In order to develop aTBS as an effective treatment for MDD, future research should focus on identification of reliable predictors for better outcome to TBS. The main objectives were: 1) To directly compare multiple different brain-based measures (neuroimaging and electrophysiology) to identify which has the most power in accurately predicting response to TBS compared to sham. 2) To track both short and long-term longitudinal electrophysiological (EEG) changes related to the therapeutic effects of TBS. ;
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