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NCT03223623 · ClinicalTrials.gov registry record · NA
Pathophysiology of Focal Hand Dystonia
A NA study of Dystonia, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- Completed
- Registry status
- NA
- Development phase
- 32
- Enrollment target
- 1
- Study location
NCT03223623: Completed NA study of Dystonia, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
NCT03223623 is a NA study of Dystonia that has completed, run by National Institute of Neurological Disorders and Stroke (NINDS). The registered enrollment target is 32 participants, below the 539-participant average among 28 other Dystonia trials with a reported enrollment target (94% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03223623, a NA study of Dystonia, has completed, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- COMPLETED
- Registry status
- NA
- Development phase
- 32 participants
- Enrollment target
- 1
- Study location
Study Summary
Background: Little is known about the problems in brain function in focal hand dystonia (FHD) or complex regional pain syndrome (CRPS) dystonia. It is unclear why some CRPS patients develop dystonia but others do not. Researchers want to learn which area of the brain is involved in CRPS dystonia compared with FHD. Objectives: To understand why people with CRPS develop dystonia, and if these reasons are different in people with FHD. Eligibility: Adults ages 18 - 70 with CRPS dystonia OR with CRPS without dystonia OR with FHD and Healthy volunteers of similar age. Design: Participants will be screened with physical exam, neurological exam, and medical history. They may give a urine sample and will answer questions. Participants can have 4 - 5 outpatient visits or stay at the clinical center for approximately 5-6 days. Participants will have MRI scans. They will lie on a table that slides in and out of a scanner that takes pictures of their brain. They will do small tasks or be asked to imagine things during the scanning. Participants will have transcranial magnetic stimulation (TMS) sessions for a few hours, with breaks. A brief electrical current passing through a well insulated wire coil on the scalp creates a magnetic pulse. This affects brain activity. Participants may do small tasks during TMS. Participants will have the electrical activity of their muscles measured during TMS sessions. Small sticky pads will be attached to their hands and arms. Participants ability to feel 2 separate stimuli as different will be tested by using a weak electrical shock to their fingers. They will also be asked to feel small plastic domes with ridges, that may cause discomfort.
Primary Outcome
We will look for changes in the BOLD signal in the parietal sensorimotor integration area.
Conditions Studied
Interventions
- DEVICE TMS
- DEVICE MRI
- DEVICE VASO Imaging
Study Locations (1)
Maryland
- National Institutes of Health Clinical Center - Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 32 participants |
| Start Date | 2017-12-12 |
| Est. Completion | 2022-05-18 |
| Phase | NA |
What the finished NCT03223623 record still lists
NCT03223623 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 32 participants, a relatively small participant target, below the 539-participant average among 28 other Dystonia trials with a reported enrollment target (94% lower).
The record links to 1 condition, with Dystonia appearing as the primary indexed condition, and to 3 interventions - of which TMS is the first listed.
NCT03223623 reports a single indexed study location in Maryland.
Frequently Asked Questions
What is clinical trial NCT03223623 about?
NCT03223623 is a clinical study titled "Pathophysiology of Focal Hand Dystonia". Background: Little is known about the problems in brain function in focal hand dystonia (FHD) or complex regional pain syndrome (CRPS) dystonia. It is unclear why some CRPS patients develop dystonia but others do not. Researchers want to learn which area of the brain is involved in CRPS dystonia co...
What is the current status of trial NCT03223623?
This trial is currently completed. It is a NA study. The enrollment target is 32 participants. The study started on 2017-12-12. Estimated completion is 2022-05-18.
What conditions does trial NCT03223623 study?
This clinical trial studies the following conditions: Dystonia.
What interventions are being tested in trial NCT03223623?
The interventions under investigation include: TMS (DEVICE), MRI (DEVICE), VASO Imaging (DEVICE).
Who is sponsoring clinical trial NCT03223623?
This trial is sponsored by National Institute of Neurological Disorders and Stroke (NINDS), which has 567 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT03223623 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
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Where NCT03223623's enrollment target sits among peer trials
32 21st of 28 higher than 8 of 28 other Dystonia trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Dystonia trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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