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CompletedNCT04910581WILSTIM2Updated Feb 28, 2024

rTMS in Wilson Disease Dysarthria

An interventional study of rTMS and Sham stimulation in Wilson Disease, sponsored by Assistance Publique - Hôpitaux de Paris. Completed at 2 sites in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-28.

Sponsored by Assistance Publique - Hôpitaux de Paris · Not applicable, Interventional, and Treatment

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Phase
Not applicable
Study type
Interventional
Enrollment
18
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 17 studies in Hepatolenticular Degeneration with a site in France — 8 open to participants now, 8 under way, none of them phase 3. Hepatolenticular Degeneration · France.

Enrollment
8th of 11
18 · median 40
Started
2023
with 2 others
No phase
8 of 17
3 open now
Registered
6th of 17
by date
Lead sponsor
2 of 17
Assistance Publique - Hôpitaux de Paris

Among the 17 studies in Hepatolenticular Degeneration with a site in France, this one is the 8th largest by enrollment of the 11 interventional ones that give a count, is one of 3 that started in 2023, is one of 8 with no phase, and was the 6th registered.

Hepatolenticular Degeneration

80 studies on the registry are indexed under Hepatolenticular Degeneration; 31 are open to participants now.

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Open to participants now

8 of the 17 studies in Hepatolenticular Degeneration with a site in France are open now. Recruiting first, the newest first:

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All 8 open studies →

A study can be open while its sites in France have not opened yet or have stopped. Only those recruiting at a site in France →

Who these studies take

Of the 21 Hepatolenticular Degeneration studies recruiting now, 16 (76%) set no upper age limit and 4 (19%) stop at 75 or younger; 14 take children under 18; 3 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Wilson disease is a hereditary hepatic and neurological disease associated with copper accumulation. Neurological symptoms are of extra-pyramidal, cerebellar and dystonic origin. Dysarthria is one of the debilitating symptoms of Wilson disease poorly responsive to pharmacological treatment. The most common form is a dystonic hyperkinetic Dysarthria.

Pathophysiology of dystonia is still not elucidated. Motor cortex hyperexcitability has been demonstrated in various forms of dystonia. Furthermore, rTMS inhibitory applied over motor cortex has been shown to transitory reduce dystonic symptoms in various forms of dystonia.

In the present study, we investigate the effect of a single 1Hz 20-minutes inhibitory rTMS session applied over the motor laryngeal cortex on dyasarthria is the main kinetic dysarthria has been shown to be associated with inhibition of laryngeal motor cortex in Parkinson disease.

Read the detailed description

A consecutive series of Wilson disease patients with dystonic hyperkinetic dysarthria will be prospectively recruited.

Patients will receive 3 days apart to two rTMS sessions.

rTMS procedures will be performed with a figure of eight coiled. A single 20-minutes 1 Hz biphasic stimulation (1200 pulses) session will be applied over the laryngeal motor cortex. A brain imaging positioning device will be used during all the procedure A second stimulation session will be performed 3 days apart.

Patients will be centrally randomized to receive first either the active stimulation (80% of the resting motor threshold) or the sham stimulation (using a visually identical coil to reproduce the click sound and the scalp sensation of the active coil).

A TMS evaluation of cortical silent period over the left motor cortex will be performed before the first rTMS session.

Before and immediately after each stimulation (active or sham) patient will received an clinical evaluation including Clinical Assessment Battery for Dysarthria intelligibility score, "A" phonation time, diadococinesia , bucco-linguo-facial motricity score and UWDRS.

A standard 20-minutes EEG will be performed before the first rTMS session and immediately after the second rTMS session.

03

Conditions studied

  • Wilson Disease

Keywords

  • dyasarthria, repetitive transcranial magnetic stimulation
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Conseting adult patients with social insurance
  • Wilson disease with dystonic hyperkinetic dysarthria
  • Stable pharmacological therapy n the last 6 monts
  • Brain MRI in the previous 6 months, without additional brain lesion
  • Patients that did not receive botulinium toxin in the previous 4 months

Exclusion criteria

Exclusion Criteria:

  • Incapacitated adult
  • Previous mdedical history of epilepsia
  • Pregnancy or breastfeeding
  • Brain lesion outside basal ganglia on brain MRI
  • Patient consider by the investigator not able to sustain an 30 minutes rTMS session without moving
  • Vocal chord lesion
  • Previous history of laryngeal surgery
  • rTMS contra indication
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
18 participants (actual)

Study arms

  • Active comparator
    Experimental stimulation

    Patients receive an inhibitor treatment of rTMS using activ coil (MCF B65 coil) for 30 minutes at 1Hz at 80% of the resting motor threshold (MagPro stimulator; MagVenture A / S, Farum, Denmark) onto the left laryngeal cortex located thanks to a neuronavigation device (Syneika one \[SYN1\], Syneika, Cesson-Sévigné, France).

    Procedure: rTMS

  • Placebo comparator
    Sham stimulation

    Patients receive a treatment of rTMS using placebo coil (MCF P B65 coil) for 30 minutes at 1Hz (MagPro stimulator; MagVenture A / S, Farum, Denmark) onto the left laryngeal cortex located thanks to a neuronavigation device (Syneika one \[SYN1\], Syneika, Cesson-Sévigné, France).

    Procedure: Sham stimulation

Interventions

  • ProcedurerTMS

    Single 30-minutes session of 1Hz rTMS applied over the left laryngeal motor cortex

  • ProcedureSham stimulation

    Single 30-minutes session of sham stimulation applied over the left laryngeal motor cortex

06

What researchers measure

Primary outcomes

  1. Improvement of the Clinical Assessment Battery for Dysarthria intelligibility score

    Improvement of the Clinical Assessment Battery for Dysarthria intelligibility score with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

Secondary outcomes

  1. Improvement of the Clinical Assessment Battery for Dysarthria intelligibility sub-scores

    Improvement of the Clinical Assessment Battery for Dysarthria intelligibility sub-scores with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  2. the "A" phonation time

    Improvement of the "A" phonation time with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  3. Improvement of the diadococinesia

    Improvement of the diadococinesia with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  4. Improvement of text reading

    Improvement of text reading with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  5. Improvement of bucco-linguo-facial motricity

    Improvement of bucco-linguo-facial motricity with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  6. Improvement bucco-linguo-facial motricity

    Improvement bucco-linguo-facial motricity with active stimulation in comparison to sham stimulation

    Time frame: within 30 minutes after stimulation session at Day1 and Day4

  7. Correlation between clinical Assessment Battery for Dysarthria intelligibility score and UWDRS, and MRI brain atrophy and basal ganglia lesions

    Correlation of changes in the Battery for Dysarthria intelligibility score with clinical parameters (age at diagnosis, delay related to first symptoms, degree of neurological handicap and brain lesions observed on basline MRI (cortical atrophy and lesions of the basal ganglia)

    Time frame: at Day1 and Day4

  8. Side effects of rTMS

    Any side effect after stimulation (fatigue, neck pain, neck stiffness, dizziness, nausea, itching, mood disorders ..) will be collected following the stimulation. Side effects of rTMS are rare. Most often they are minor and transient.

    Time frame: within few hours after stimulation session at Day1 and Day4

07

Study locations

2 sites
  • Service de Physiologie Clinique-Explorations Fonctionnelles, AP-HP, Hôpital Lariboisière
    Paris, 75010, France
  • Service de Neurologie, Hopital Fondation Adolphe de Rothschild
    Paris, 75019, France
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jan 2023 to primary completion in Jan 2024, 11 months.

How these figures are worked out, and which studies are left out of them.

Registered
May 14, 2021
First posted
Jun 2, 2021
StartActual
Jan 23, 2023
Primary completionActual
Jan 12, 2024
CompletionActual
Jan 12, 2024
Last update
Feb 28, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 28, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04910581
Responsible party
Sponsor
First posted
Jun 2, 2021
Start date
Jan 23, 2023
Primary completion
Jan 12, 2024
Completion
Jan 12, 2024
Last update
Feb 28, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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