TMS for the Investigation of Brain Plasticity in Autism Spectrum Disorders

Status Completed

Clinical Trial Summary

The main purpose is to study brain plasticity (the changes that occur in the brain through experience) in individuals with autism spectrum disorder (ASD). Research suggests that during development, the brains of individuals with ASD may change in response to their experiences differently than the brains of typically developing individuals. Investigators want to understand why and how this difference may contribute to the symptoms of ASD.

Clinical Trial Description

Autism Spectrum Disorders (ASD) are diagnosed clinically, based on key symptoms. As ASD phenotypic variability is large, and symptoms can manifest at different ages and degrees, the clinical diagnosis is challenging. To date, there remains an unmet need for a valid and reliable endophenotype that would facilitate ASD diagnosis early in life, enable efficient study of ASD risk factors, and eventually serve as a useful biomarker to inform the development of effective therapies and assess treatment response in future clinical trials. As compared with behavioral or neuroimaging methods, transcranial magnetic stimulation (TMS) offers the advantage of providing behaviorally independent results that are largely unaffected by attention or cognitive ability. Therefore, a TMS based endophenotype may be applicable to all individuals across the autism spectrum. At Boston Children's Hospital, each subject's participation in the study will consist of four visits: two screening visits, and two TMS sessions. At Beth Israel Deaconess Medical Center, each subject's participation will consist of three visits: one screening visit, and two TMS sessions. Each screening visit is expected to last between 2-3 hours, during which participants will first provide informed consent. Participants will then receive a thorough medical examination by a neurologist, and a neuropsychological evaluation (including IQ measures and ASD specific evaluations). If eligible to continue, participants will then come back for two identical TMS visits, that are spaced 1-5 weeks apart. These visits are expected to last between 3-4 hours, and include the TMS measures of brain plasticity. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02836405
Study type	Observational
Source	Boston Children's Hospital
Contact
Status	Completed
Phase
Start date	May 2015
Completion date	July 2020

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.