Clinical trial Recruiting at 1 site Observational Ages 11 and up

Investigating the relationship between genetic mutations and brain changes in dystonia

Official title: Dystonia Genotype-Phenotype Correlation: A Study to Identify Additional Genetic Associations That Contribute to Specific Dystonic Phenotypes

Run by University of Texas Southwestern Medical Center · NCT03428009 · Data updated 2026-11-12

This study is trying to see how genetic changes linked to dystonia affect the brain in people with the condition compared to healthy individuals.

Quick facts

Study typeObservational
Ages11 Years and up
SexAll
Enrollment200 (estimated)
SponsorUniversity of Texas Southwestern Medical Center
Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (Dallas, Texas)
StatusRecruiting
StartedMarch 1, 2018
Main results expectedSeptember 2027
Study endsSeptember 2027
Registry record updatedSeptember 23, 2026
Trial IDNCT03428009 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals diagnosed with any form of dystonia, including idiopathic and familial types.

Probably not a fit

Patients with conditions that prevent MRI compatibility or those with severe medical illnesses may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to explore how known dystonia-causing mutations affect brain structure and function. It will involve recruiting individuals with various forms of dystonia, as well as healthy controls, to undergo clinical assessments, MRI scans, and genetic analysis. The study will analyze brain activity and structure before and after botulinum toxin injections in some participants, while also collecting detailed clinical information to identify potential new dystonia-related genes. The goal is to better understand the differences in brain changes associated with different clinical phenotypes of dystonia.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and treatment options for patients with dystonia.

How similar studies have gone: Other studies have shown promise in understanding the genetic and neurological aspects of dystonia, but this specific approach may offer novel insights.

Who can join: the full rules

Show full inclusion / exclusion criteria
General Exclusion (both Dystonia and Control groups):

* Metal in any part of the body (including metal injury to the eye) OR carrying a medical device incompatible with MRI (e.g., metal implants such as surgical clips or pacemakers) OR positive screening per UTSW MRI screening form
* Claustrophobia
* Non-fluent English
* Weight incompatible with MRI safety
* History of head trauma with neurological sequelae, including multiple concussions and/or history of stroke
* Pregnancy
* Serious medical illness or history of serious medical illness, including cancer that was treated with radiation or chemotherapy, heart attack, or a known history of HIV-1 + status
* Subjects with Hepatitis C (by Hepatitis C+ titer)
* Subjects with insulin dependent diabetes mellitus (IDDM)
* Severe respiratory compromise
* In the opinion of the investigator, not able to safely participate in this study

Inclusion Criteria:

* Dystonia group

Previous diagnosis of dystonia which include but is not limited to:

* cervical dystonia (50 subjects)
* blepharospasm (25 subjects)
* limb dystonia (50 subjects)
* spasmodic dysphonia (25 subjects)
* segmental dystonia
* multi-focal dystonia
* Any childhood-onset dystonia (25 subjects) Age \> 11 years

  * Control group:

No prior dystonia diagnosis (175 subjects) Age \> 11 years

Exclusion Criteria:

* Dystonia group Prior history of or concurrent neurological or psychiatric diagnosis - depression and/or anxiety accepted Current use of non-dystonia neuroactive medications - SSRI/medication for depression and/or anxiety accepted Current use of cervical brace designed for dystonia treatment Prior structural brain injury

Control group:

History of or current neurological or psychiatric diagnosis - depression and/or anxiety accepted, but must not be in active phase Current use of any neuroactive medication, SSRI/medication for depression and/or anxiety accepted

Where it's running

  • University of Texas Southwestern Medical Center
    Dallas, Texas, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.