An Observational Study of Individuals With Isolated Dystonia
1 other identifier
observational
200
1 country
29
Brief Summary
This is an observational study in individuals with isolated (or primary) dystonia that involves more than one body region. The purpose of the study is to collect detailed information to help your physician and other researchers understand how dystonia impacts your and other patients' lives and how the disease changes over time. The study may also help researchers better understand the clinical scales that are commonly used to evaluate dystonia symptoms and how they affect various areas of life such as well-being, pain, relationships and social interactions, and progress over time. Because this is an observational study, you will not receive any interventional treatment in the study.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jun 2025
29 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 17, 2025
CompletedFirst Submitted
Initial submission to the registry
August 1, 2025
CompletedFirst Posted
Study publicly available on registry
August 8, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 1, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
October 1, 2026
March 31, 2026
March 1, 2026
1.3 years
August 1, 2025
March 27, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Burke-Fahn-Marsden (BFM) Dystonia Rating Scale
The BFM was developed to quantitatively assess primary dystonias (Burke 1985). It is composed of 2 subscales: a movement subscale, based on the clinician's evaluation of the patient in nine body areas, and a disability subscale, based on the participant's report of disability in activities of daily living.
From start of treatment through 4 months
Secondary Outcomes (2)
Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS-2)
From start of treatment through 4 months
Clinical Global Impression of Severity (CGI-S)
From start of treatment through 4 months
Study Arms (1)
Isolated (or Primary) Dystonia Cohort
This is a single-arm noninterventional, prospective observational study enrolling up to 200 male and female participants (ages 12 - 65 years, inclusive) that have been diagnosed with isolated dystonia for at least one year prior to the first study visit. Candidates with focal dystonia (i.e., only one body part affected) are not eligible for participation. However, the Investigator may query such patients to determine if symptoms have spread to other regions, which may allow them to be eligible for study entry.
Eligibility Criteria
Isolated (Primary) Dystonia
You may qualify if:
- The participant is willing to sign an informed consent form indicating that he/she understands the purpose of the study; understands and can perform, complete, and comply with all the assessments that are required during the study; and is willing to participate in the study.
- The participant is a male or female between 12 and 65 years of age (inclusive).
- The participant has a clinical diagnosis of isolated (or primary) dystonia for at least one year prior to Visit 1 and meets the study definition of segmental/multifocal or generalized dystonia at Visit 1.
You may not qualify if:
- The participant has a diagnosis of focal dystonia at Visit 1.
- The participant has a diagnosis of dopa-responsive dystonia, secondary dystonia, or psychogenic/functional dystonia.
- The participant has any significant ongoing disease, disorder, laboratory abnormalities, alcohol or illicit drug abuse or dependence, environmental factor, or any ongoing or history of any medical or surgical condition that in the judgment of the investigator, in consultation with the medical monitor and/or sponsor's designee, might jeopardize the participant's safety, impact the scientific objectives of the clinical study, or interfere with participation in the clinical study.
- The participant has a history of any psychiatric or cognitive impairment disorder that, in the opinion of the investigator, may interfere with study conduct.
- The participant has had myotomy or denervation surgery in any affected muscles (e.g., peripheral denervation and/or spinal cord stimulation).
- The participant has marked limitation on passive range of motion that suggests contractures or other structural abnormality (e.g., cervical contractures or cervical spine syndrome).
- The participant has undergone deep brain stimulation (DBS) surgery (even if implant deactivated).
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (29)
Vima Site #004
Scottsdale, Arizona, 85258, United States
Vima Site #028
Sun City, Arizona, 85351, United States
Vima Site #010
Aliso Viejo, California, 92656, United States
Vima Site #030
Los Angeles, California, 97239, United States
Vima Site #022
Palo Alto, California, 94301, United States
Vima Site #019
Englewood, Colorado, 80113, United States
Vima Site #003
Boca Raton, Florida, 33486, United States
Vima Site #009
Gainesville, Florida, 32611, United States
Vima Site #008
Miami, Florida, 33176, United States
Vima Site #031
Orlando, Florida, 32825, United States
Vima Site #005
Atlanta, Georgia, 30322, United States
Vima Site #027
Chicago, Illinois, 60611, United States
Vima Site #007
Olney, Maryland, 20832, United States
Vima Site #002
Farmington Hills, Michigan, 48334, United States
Vima Site #014
Albuquerque, New Mexico, 87106, United States
Vima Site #017
Commack, New York, 11725, United States
Vima Site #018
New York, New York, 10029, United States
Vima Site #024
New York, New York, 10065, United States
Vima Site #029
Portland, Oregon, 97239, United States
Vima Site #020
Philadelphia, Pennsylvania, 19107, United States
Vima Site #021
Charleston, South Carolina, 29407, United States
Vima Site #016
Memphis, Tennessee, 38157, United States
Vima Site #006
Nashville, Tennessee, 37232, United States
Vima Site #025
Dallas, Texas, 75390, United States
Vima Site #026
Georgetown, Texas, 78628, United States
Vima Site #012
Houston, Texas, 77030, United States
Vima Site #011
Richmond, Virginia, 23298, United States
Vima Site #023
Kirkland, Washington, 98034, United States
Vima Site #015
Spokane, Washington, 99202, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 1, 2025
First Posted
August 8, 2025
Study Start
June 17, 2025
Primary Completion (Estimated)
October 1, 2026
Study Completion (Estimated)
October 1, 2026
Last Updated
March 31, 2026
Record last verified: 2026-03
Data Sharing
- IPD Sharing
- Will not share