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Asymmetric Subthalamic Deep Brain Stimulation for Axial Motor Dysfunction in Parkinson's Disease

9 décembre 2020 mis à jour par: Alfonso Fasano, University of Toronto

A Single-center, Randomized, Double-blinded, Double-crossover Trial of Asymmetric Subthalamic Deep Brain Stimulation for Axial Motor Dysfunction in Parkinson's Disease

This single-center, randomized, quadruple-blinded, double-crossover comparative efficacy trial will study the effects of unilateral 50% voltage reduction in axial motor dysfunction for patients with Parkinson's disease that develop treatment-resistant postural stability gait dysfunction after bilateral subthalamic nucleus deep brain stimulation surgery.

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Réel)

22

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5T 2S8
        • Movement disorders Centre, Toronto Western Hospital

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Enfant
  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Patients with Parkinson's disease (PD) (previously diagnosed according to the UK brain bank criteria) who develop treatment-resistant postural instability gait dysfunction (PIGD) more than 6 months but less than 5 years after bilateral subthalamic nucleus deep brain stimulation (STN-DBS).
  • Treatment-resistant PIGD will be defined as freezing of gait and UPDRS or MDS-UPDRS PIGD subscales of more than 6 points despite optimization of medications and bilateral STN-DBS programming.

Exclusion Criteria:

  • Treatment-resistant PIGD less than 6 months or more than 5 years after STN-DBS surgery.
  • PIGD responsive to optimization of medications and/or bilateral STN-DBS programming.
  • Cognitive impairment or psychiatric comorbidities (including substance abuse) that would interfere with the informed consent process, study adherence or outcome assessments.
  • Advanced PD or any other neurological, cardiovascular or musculoskeletal co-morbidities that would preclude or require assistance to complete the 10-meter walking test.
  • Patients not able to comply with 4-week interval evaluations following their potential enrollment due to personal reasons.
  • Serious illness (requiring systemic treatment and/or hospitalization) until subject either completes therapy or is clinically-stable on therapy, in the opinion of the site investigator, for at least 30 days prior to study entry.
  • Inability or unwillingness of subject or legal guardian/representative to give written informed consent.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation croisée
  • Masquage: Quadruple

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Aucune intervention: Baseline STN-DBS
Maintenance of baseline bilateral STN-DBS settings.
Expérimental: Asymmetric STN-DBS 1
Unilateral 50% reduction of voltage (e.g. right side)
Autre: Asymmetric STN-DBS
Asymmetric deep brain stimulation
Expérimental: Asymmetric STN-DBS 2
Unilateral 50% reduction of voltage (e.g. left side)
Autre: Asymmetric STN-DBS
Asymmetric deep brain stimulation

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Change in Gait Velocity
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
As measured during the 10-meter walk test. In this test, participants walk at their usual, regular pace over a total distance of 10 meters. The middle 6-meters (between the 2-meter and 8-meter marks) are timed to measure gait velocity during steady-state gait.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Change in Motor Function
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)

As measured by the MDS-UPDRS (Movement Disorders Society Unified Parkinson's Disease Rating Scale), which is a clinical and research tool to measure symptoms and signs of Parkinson's disease. It has 4 parts: I (non-motor experiences of daily living), II (motor experiences of daily living), III (motor exam) and IV (motor complications). The MDS-UPDRS has 60 items, scored from 0-4 each. The minimum score is 0 and the maximum score is 240.

The MDS-UPDRS (motor) is Part III and measures motor signs. It has 28 items, scored from 0-4 each, so the minimum score is 0 and the maximum score is 112.

The MDS-UPDRS (axial motor) is composed of items 3.1 to 3.3a and 3.9 to 3.13 of Part III of the MDS-UPDRS and measures axial motor signs. It has 8 items, scored from 0-4 each, so the minimum score is 0 and the maximum score is 32.

In the MDS-UPDRS total, motor and axial motor sub-scales, lower scores indicate better symptoms/signs and higher scores indicate worse symptoms/signs, respectively.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Axial Motor Function (1)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
As measured by the Mini-BESTest. The Mini-BESTest is a shorter version of the BESTest (Balance Evaluation Systems Test). It is a clinical and research tool to measure balance control. The Mini-BESTest has 14 items, scored from 0-2 each, so the minimum score is 0 and the maximum score is 28. Lower scores indicate worse balance control and higher scores indicate better balance control.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Axial Motor Function (2)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
As measured by the UPDRS-PIGD sub-scale. The UPDRS-PIGD is the Postural Instability Gait Dysfunction (PIGD) sub-scale of the Unified Parkinson's Disease Rating Scale (UPDRS). It is a clinical and research tool to measure PIGD. The UPDRS-PIGD has 5 items, scored from 0-4 each, so the minimum score is 0 and the maximum score is 20. Lower scores indicate better PIGD and higher scores indicate worse PIGD.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Axial Motor Function (3)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
As measured by the Freezing of Gait Questionnaire. The Freezing of Gait Questionnaire is a clinical and research tool to measure freezing of gait. It has 6 items, scored from 0-4 each, so the minimum score is 0 and the maximum score is 24. Lower scores indicate better and higher scores indicate worse freezing of gait, respectively.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Gait Analysis (1)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Changes in gait velocity in m/s as measured by a quantitative gait analysis system (Zeno walkway).
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Gait Analysis (2)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)

Changes in step length in cm (mean, right, left) as measured by a quantitative gait analysis system (Zeno walkway).

Step length difference = [right - left step length]
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Gait Analysis (3)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)

Step length ratio = [right step length] / [left step length]

Step length symmetry = ([right - left step length] / [right + left step length])
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Speech Analysis (1)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Changes in pitch in Hertz (Hz) as measured by the Praat software.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Speech Analysis (2)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Changes in loudness in decibels (dB) as measured by the Praat software.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Speech Analysis (3)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Changes in jitter measured in percentage by the Praat software. In this case, jitter is the percentage change in the stability of the frequency of speech tone (i.e. speech cycle-to-cycle frequency variation)
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quantitative Speech Analysis (4)
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Changes in shimmer measured in percentage by the Praat software. In this case, shimmer is the percentage change in the stability of the amplitude of speech tone (i.e. speech cycle-to-cycle amplitude variation)
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Quality of Life
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
As measured by the Total Score of the 39-item Parkinson's Disease Quality of Life Questionnaire (PDQ-39). The PDQ-39 is a clinical and research tool to measure quality of life in Parkinson's disease. It has 39 questions, which patients score as never (0% of the time), occasionally (25% of the time), sometimes (50% of the time), often (75% of the time) or always (100% of the time). The PDQ-39 Total Score or Summary Index is the average of the 39 questions, expressed. The minimum score is 0% (never) and the maximum score is 100% (always). Lower scores indicate better quality of life and higher scores indicate worse quality of life.
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Change in Select Cognitive Tasks
Délai: Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)
Left brain cognitive function: Hopkins Verbal Learning Test-Revised: Total recall trials 1-3 (0-36), delayed recall (0-12); Phonemic Verbal Fluency (0-no max); Semantic Verbal Fluency (Animal cue) (0-no max); Letter 1-back and 2-back working memory tasks (0-100%). Right brain cognitive function: Brief Visual Memory Test-Revised: Total recall trials 1-3 (0-36), delayed recall (0-12); Computerized landmark line bisection (-10 to 10); Spatial 1-back and 2-back working memory tasks (0-100%). Ranges in parentheses. Line bisection: closer to 0 is more accurate. For the rest: higher values are better
Baseline and 3 to 4 weeks after switching to each of the DBS conditions (Bilateral, Asymmetric 1, Asymmetric 2)

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

University of Toronto

Les enquêteurs

  • Chercheur principal: Alfonso Fasano, MD, PhD, University of Toronto

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

14 mars 2018

Achèvement primaire (Réel)

15 avril 2019

Achèvement de l'étude (Réel)

15 avril 2019

Dates d'inscription aux études

Première soumission

5 mars 2018

Première soumission répondant aux critères de contrôle qualité

5 mars 2018

Première publication (Réel)

12 mars 2018

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

5 janvier 2021

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 décembre 2020

Dernière vérification

1 décembre 2020

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 17-5785

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

Oui

Description du régime IPD

To be shared as supplementary data upon publication of the results of the trial.

Délai de partage IPD

To be shared as supplementary data upon publication of the results of the trial.

Type d'informations de prise en charge du partage d'IPD

  • Protocole d'étude
  • Plan d'analyse statistique (PAS)
  • Formulaire de consentement éclairé (ICF)
  • Rapport d'étude clinique (CSR)

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

produit fabriqué et exporté des États-Unis.

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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