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Inhibitory rTMS in Dystonic Wilson Patients (WILSTIM)

14 de junio de 2021 actualizado por: Assistance Publique - Hôpitaux de Paris

Study of Writing Improvement in Patients With Wilson Disease and Dystonia After One Session of Inhibitory Repetitive Transcranial Magnetic Stimulation

Wilson disease is a genetic disorder resulting in copper accumulation in liver, brain and eye. The neurologic complications include dystonic syndrome, which is a prolonged and excessive muscle activation responsible for abnormal postures. Hand dystonia prevents daily life activities such as writing, which is particularly disabling, since writing is the only mean of communication in these patients with significant slurred speech. Treatment is limited and only partially effective.

Low frequency (<or=1Hz) repetitive transcranial magnetic stimulation (rTMS) has shown inhibiting properties when applied over the cortex. Since dystonia has been correlated to hyperactivation of the neurons of the somatosensory cortex (SSC), we hypothesize that one single 20-minute session of 1 Hz rTMS applied on left SSC will improve writing of the right dystonic hand, assessed immediately at the end of the session.

Descripción general del estudio

Descripción detallada

This study investigates the handwriting performance of an homogeneous cohort of patients with Wilson disease and right handed dystonia, after one single inhibitory repetitive transcranial magnetic stimulation (rTMS). Fifteen patients with focal right hand dystonia will receive randomly either active or sham rTMS (1 Hz) to the left somatosensory cortex (SSC) in one single 20 minutes session. Handwriting performance will be measured immediately after this unique session (Visual analogic scale of subjective discomfort in writing, DPRE and WCRS scales, pen pressure and pen velocity measured on touchpad), compared to scores obtained 24 hours before the session. Three days later, the patient will receive the other session (sham rTMS or active rTMS) and the same parameters will be evaluated.

This is a single-center, randomized, crossover, prospective, clinical and double-blind study (the rTMS session is performed by the neurophysiologist, but the patient and the neurologist who will perform the handwriting evaluation are blind to the session).

Tipo de estudio

Intervencionista

Inscripción (Actual)

14

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

    • Ile De France
      • Paris, Ile De France, Francia, 75010
        • Hospital Lariboisière

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Wilson disease with focal right hand dystonia
  • No modification of medical treatment for 6 months
  • No botulinum toxin administration within the past four months
  • Right handed
  • Focal right hand dystonia
  • Cerebral Magnetic Resonance performed the last 6 months with no other lesion than met in Wilson disease
  • Over 18
  • Insurance policy holder
  • Informed consent

Exclusion Criteria:

  • Pregnant woman
  • Guardianship procedure
  • Seizure history
  • Other cerebral lesions on cerebral MRI than met in Wilson Disease
  • Unable to stay quiet for 30 minutes
  • Handwriting impossible
  • Contra-indications to repetitive Transcranial Magnetic Stimulation

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación cruzada
  • Enmascaramiento: Triple

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Active rTMS
Repetitive Transcranial Magnetic stimulation: 1 Hz rTMS, delivered to left somatosensory cortex during rest. Intervention is delivered during 20 minutes in one single session.
Inhibitory 1 Hz rTMS, delivered to left somatosensory cortex during rest. Intervention is delivered during 20 minutes in one single session.
to verify the absence of infraclinical seizures
Writer's cramp rating scale
handwriting in development and being evaluated by the NRC Wilson
Comparador falso: Sham rTMS
Placebo Transcranial Magnetic stimulation delivered to left somatosensory cortex during rest. Intervention is delivered during 20 minutes in one single session.
Inhibitory 1 Hz rTMS, delivered to left somatosensory cortex during rest. Intervention is delivered during 20 minutes in one single session.
to verify the absence of infraclinical seizures
Writer's cramp rating scale
handwriting in development and being evaluated by the NRC Wilson

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
immediate and significant improvement in writing
Periodo de tiempo: up to 1 week

Improvement of handwriting performance immediately after one single 20 minutes session of inhibitory (1 Hz) repetitive transcranial magnetic stimulation over the left somatosensory cortex.

quantitative test score of writing WCRS

Active or sham stimulation will be randomly assigned to the patient and the other session will be performed 3 days later.

up to 1 week

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
significant improvement in writing
Periodo de tiempo: up to 1 week

improvement of other quantitative test scores of writing (VAS subjective discomfort writing, DPRE scales and parameters measured on touchpad) after a single session of 1 Hz rTMS inhibitory to the left CSS , compared to the scores achieved in the 24 hours before the session of rTMS.

Active or sham stimulation will be randomly assigned to the patient and the other session will be performed 3 days later.

up to 1 week
improvement of dystonia on the scale WDRS
Periodo de tiempo: up to 1 week

Assessing the improvement of dystonia on the scale WDRS after a single session of 1 Hz rTMS inhibitory to the left CSS, compared to the scores achieved in the 24 hours before the session of rTMS.

Active or sham stimulation will be randomly assigned to the patient and the other session will be performed 3 days later.

up to 1 week
correlation between the scores and the other parameters of disease severity
Periodo de tiempo: up to 1 week
Assess whether age, disease duration and the presence of cortical atrophy are inversely correlated with the evolution of scores.
up to 1 week

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Director de estudio: Nathalie KUBIS, MD, PhD, Physiology Department, Lariboisière Hospital
  • Investigador principal: Jean-Marc TROCELLO, MD, Neurology, Lariboisière Hospital

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

1 de enero de 2014

Finalización primaria (Actual)

1 de julio de 2015

Finalización del estudio (Actual)

1 de julio de 2015

Fechas de registro del estudio

Enviado por primera vez

24 de octubre de 2013

Primero enviado que cumplió con los criterios de control de calidad

4 de noviembre de 2013

Publicado por primera vez (Estimar)

11 de noviembre de 2013

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

15 de junio de 2021

Última actualización enviada que cumplió con los criterios de control de calidad

14 de junio de 2021

Última verificación

1 de junio de 2021

Más información

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Ensayos clínicos sobre Repetitive Transcranial Magnetic Stimulation (rTMS)

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