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CompletedNCT02931097GAITPARKUpdated Sep 8, 2025

DBS of the MLR for Gait and Balance Disorders in PD Patients

An interventional study of Deep brain stimulation and Sham stimulation in Parkinson's Disease, sponsored by Institut National de la Santé Et de la Recherche Médicale, France. Completed at 1 site in France. Open to participants aged 18 Years to 71 Years. Per ClinicalTrials.gov, last updated 2025-09-08.

Sponsored by Institut National de la Santé Et de la Recherche Médicale, France · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
6
Allocation
Randomized
Ages
18 Years to 71 Years
Sex
All
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Study summary

Gait and balance disorders represent the main motor disability in advanced Parkinson's disease. These symptoms are less or unresponsive to levodopa treatment and are considered to be a contraindication for deep brain stimulation of the subthalamic nucleus. Falls and freezing of gait are responsible for high morbidity (fractures, residential health care) and increased significantly mortality. The pathophysiology of gait and balance disorders is still poorly understood, but recent data obtained in animals and humans suggest that a degeneration of cholinergic neurons of the pedunculopontine nucleus (PPN), within the mesencephalic locomotor region, could play a crucial role. In line with this hypothesis, low-frequency stimulation of the pedunculopontine area, thought to increase the activity of the remaining cholinergic PPN neurons, has been proposed to alleviate gait and balance disorders in advanced PD patients. Here, the efficacy of deep brain stimulation of the mesencephalic locomotor region will be tested in 12 PD patients in a randomized, double-blind, cross-over, controlled study.

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Conditions studied

  • Parkinson's Disease

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Keywords

  • Parkinson's disease
  • Deep brain stimulation
  • Mesencephalic locomotor region
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In context

Parkinson Disease

4,487 studies on the registry are indexed under Parkinson Disease; 1,082 are open to participants now.

This study's enrollment of 6 is below the median of 40 across 3,294 interventional studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

Institut National de la Santé Et de la Recherche Médicale, France is the lead sponsor of 375 studies on the registry; 82 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 71 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • age below 71 years
  • severe form of Parkinson's Disease with disease duration > 5 years
  • presence of gait and/or balance disorders unresponsive to levodopa treatment,
  • > 40% decrease in others motor symptoms with levodopa treatment
  • health insurance
  • give signed informed written consent

Exclusion criteria

Exclusion Criteria:

  • dementia (Mattis Dementia Rating Scale \< 129, MDRS),
  • ongoing psychiatric disturbances,
  • surgical contraindications
  • significant brain lesions detected on MRI.
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Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
6 participants (actual)

Study arms

  • Active comparator
    Pedunculopontine stimulation

    Deep brain stimulation of the pedunculopontine area

    Device: Deep brain stimulation

  • Active comparator
    Pontomesencephalic stimulation

    Deep brain stimulation of the pontomesencephalic area

    Device: Deep brain stimulation

  • Sham comparator
    Sham stimulation

    No deep brain stimulation

    Device: Sham stimulation

Interventions

  • DeviceDeep brain stimulation

    Stimulating deep brain electrodes and pulse generator

  • DeviceSham stimulation
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What researchers measure

Primary outcomes

  1. Change in the anticipatory postural adjustments between each deep brain stimulation condition

    Time frame: 3, 5, 7 months after surgery

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Study locations

1 site
  • Centre d'Investigation Clinique-Institut du Cerveau et de la Moelle Epiniere
    Paris, 75013, France
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References and documents

Publications

  • Bourilhon J, Olivier C, You H, Collomb-Clerc A, Grabli D, Belaid H, Mullie Y, Francois C, Czernecki V, Lau B, Perez-Garcia F, Bardinet E, Fernandez-Vidal S, Karachi C, Welter ML. Pedunculopontine and Cuneiform Nuclei Deep Brain Stimulation for Severe Gait and Balance Disorders in Parkinson's Disease: Interim Results from a Randomized Double-Blind Clinical Trial. J Parkinsons Dis. 2022;12(2):639-653. doi: 10.3233/JPD-212793. PubMed 34744048 ↗
  • Bourilhon J, Mullie Y, Olivier C, Cherif S, Belaid H, Grabli D, Czernecki V, Karachi C, Welter ML. Stimulation of the pedunculopontine and cuneiform nuclei for freezing of gait and falls in Parkinson disease: Cross-over single-blinded study and long-term follow-up. Parkinsonism Relat Disord. 2022 Mar;96:13-17. doi: 10.1016/j.parkreldis.2022.01.010. Epub 2022 Jan 22. PubMed 35121249 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 8, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02931097
Lead sponsor
Institut National de la Santé Et de la Recherche Médicale, France
Responsible party
Sponsor
First posted
Oct 12, 2016
Start date
Oct 2016
Primary completion
Oct 2019
Completion
Oct 2020
Last update
Sep 8, 2025

Study contacts

Marie-Laure Welter, MD, PhD
principal investigator · APHP

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.

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