Repetitive Transcranial Magnetic Stimulation to Reduce Tics

Status Completed

Clinical Trial Summary

Specific Aim1: Using a paradigm of Transcranial Magnetic Stimulation called Continuous Theta Burst Stimulation (cTBS) to reduce tics in Tourette Syndrome subjects

Hypothesis1: cTBS, compared to sham stimulation, will reduce tic severity by at least 25% as measured by the Yale Global Tic Severity Scale

Specific Aim2: Using cTBS to further understand neural correlates of tic generation

Hypothesis2: Functional MRI BOLD signal activation pattern will change after cTBS and this change will correlate with clinical improvement in tic severity

Clinical Trial Description

Tourette syndrome (TS) is characterized by multiple motor and phonic tics. Current understanding of tic generation is thought involve the cortico-basal-thalamic-cortical circuit. At this time, only two medications are FDA-approved for tic treatment, while many more are used in an off-label fashion with only partial success. Despite multiple approaches for tic suppression, patients with severe tics are often left with inadequate relief. Repetitive Transcranial Magnetic Stimulation (RTMS) is a new technology which allows for noninvasive stimulation of the brain. In few pilot studies, RTMS reduced tic severity when targeting the Supplementary Motor Area (SMA). In this study, we propose to use a specific paradigm of RTMS called Continuous Theta Burst Stimulation (cTBS) over SMA to treat pediatric and adult patients with tics. We will utilize functional MRI (fMRI) to identify each subject's SMA for individualized stimulation. We hypothesize that this stimulation technique can reduce tic severity when compared to sham stimulation. This proposal is novel because 1) cTBS is offered as a new RTMS paradigm to reduce tics and 2) combination of RTMS and fMRI allows us to investigate the effects of cortical stimulation on the neural correlates of tic generation. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Tourette Syndrome

Clinical Trial Details

NCT number	NCT01258790
Study type	Interventional
Source	Children's Hospital Medical Center, Cincinnati
Contact
Status	Completed
Phase	N/A
Start date	November 2010
Completion date	March 2013

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