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Non-invasive Vagus Nerve Stimulation for Parkinson's Disease (VNS)

2 novembre 2026 aggiornato da: Vincent Mok, Chinese University of Hong Kong

Although breakthroughs in the management of Parkinson's disease (PD) have emerged in recent decades resulting in better control in symptoms, majority of patients with PD are still living with various disabling motor and non-motor symptoms despite they are already receiving the best contemporary medical or surgical treatments available to them. There is obviously a need to develop additional treatment modality to further optimize the control of symptoms and/or slow the disease progression for patients having PD.

Vagus nerve stimulation (VNS), a type of noninvasive brain stimulation is believed to modify brain rhythms by modulating the nucleus of the solitary tract and locus coeruleus and other regions known to play a role in gait. Moreover, VNS may modulate inflammatory pathways and reduce oxidative stress, making it a potential disease modifying treatment approach for neurodegenerative diseases linked to neuroinflammation such as PD

Further study is warranted to explore the efficacy of non-invasive VNS for its effects on gait and other symptoms of PD as well as the anti-inflammatory effects.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

The objective of the present study is to investigate the feasibility, safety, and potential efficacy of 2 different non-invasive VNS stimulation protocols (conventional and exploratory) for patients with PD. The immediate effects of VNS as well as the medium-term effects of daily VNS at 2 and 4 weeks poststimulation, and the delayed effects of non-invasive VNS at 8 weeks of both stimulation protocols will be investigated. The effects of non-invasive VNS of the 2 different stimulation protocols will also be compared with sham stimulation. The study will be a randomized single blind study. The tested subjects, not the assessor, will be kept unaware of which treatment protocols they are receiving.

The investigator hypothesize the VNS stimulations may provide immediate effects, medium term effects and delayed effects.

Tipo di studio

Interventistico

Iscrizione (Stimato)

60

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 40 anni a 75 anni (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  1. Idiopathic PD as defined by the UK Parkinson's Disease Society Brain Bank Diagnostic Criteria

  2. Age 40 - 75 years old

  3. Presence of gait impairment as defined by any one of the below:

    a UPDRS Part 2 Item 15 (Walking) with a score of 2 b. UPDRS Part 3 Item 26 (leg Agility) with score of 2 or 3 c. UPDRS Part 3 Item 29 (Gait) with score of 1 or 2

  4. Availability of a caregiver at home

  5. Cantonese speaker

Exclusion Criteria:

  1. Patients with atypical parkinsonism (e.g., multiple system atrophy, progressive supranuclear palsy, dementia with Lewy Bodies)
  2. PD with dementia
  3. PD patients with DBS in-situ
  4. Severe PD with a Hoehn and Yahr staging of 4 or above
  5. Low blood pressure with systolic of < 110 mmHg or with postural hypotension as defined by a decrease in systolic and diastolic blood pressure by 20 mmHg and 10mmHg upon standing, respectively)
  6. Cardiac pacemaker in-situ

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore attivo: conventional VNS

Parkinson Disease

The cVNS emits a low-voltage 5.56 KHz sinusoidal wave electrical signal bursts lasting 0.9 ms via two flat stimulation contact surfaces. (Figure 2) These bursts repeat once every 38 millisecond (ms). Each set of stimulation will be applied for 2 minutes. Stimulation current can be self-adjusted by the subject. This conventional stimulation waveform was approved by the US FDA for the treatment of migraines.

Comparatore attivo: exploratory VNS

The eVNS emits the company-proprietary low-voltage of 3~8 KHz sine-variant smooth-transition wave electrical signal bursts lasting near 0.9 ms via two flat stimulation contact surfaces. These bursts repeat once in intervals of approximately 40 ms. A potential benefit of this waveform is that it can produce less unpleasant skin sensations at a given current intensity and this may enhance the subject to tolerate higher current intensity than that of the conventional stimulation.

Comparatore fittizio: sham VNS

The sVNS delivers mechanical motor vibrations to provide a similar perceptible stimulation feeling to the skin. No electrical stimulations are delivered. The device that delivers the sham stimulation is identical in appearance, weight, and user interface. A button to adjust "stimulation current" is also available in the sham device so as to allow the subject/caregiver to adjust the "stimulation current"

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change of gait
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Timed UP and Go test: Participant sits back in a standard armchair with their back against the chair and hands resting on the armrests. Regular footwear and usual walking aids (like a cane or walker) are used. On the word "Go", the person stands up, walks a distance of 3 meters (10 feet) to a marked line or cone at a normal, safe pace, turns around, walks back to the chair, and sits down again. A stopwatch starts the moment the word "Go" is spoken and stops the moment the person's buttocks touch the seat. The results in second will be interpret to assist mobility and risk of falling. The longer the time, the high risk of fall

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Severity and progression of Parkinson's disease
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Unified Parkinson's Disease Rating Scale to motor and non-motor symptoms. Score from 0 to 4. 0 is normal while 4 is severe/marked impairment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Quantitative Gait Assessment
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using an app to track the mobility of participants in a 20 sec walking

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Cognitive status
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Hong Kong Montreal Cognitive Assessment to evaluate the cognitive status. score from 0-30. The lower the score, the more cognitive impaired.

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Change in mood
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Geriatric depression scale which contain 15 questions. Score from 0-15. The higher the score, the more severe the depressed mood

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change of blood pressure
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Safety measures- record of adverse event and serious adverse event
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

To investigate any possibility and relativity of AE and SAE with the treatment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Electrocardiogram
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

To investigate any possibility and relativity of the change of ECG with the treatment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Altre misure di risultato

Misura del risultato
Lasso di tempo
Blood-based biomarkers
Lasso di tempo: Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Pubblicazioni e link utili

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Studiare le date dei record

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Studia le date principali

Inizio studio (Stimato)

20 novembre 2026

Completamento primario (Stimato)

31 dicembre 2027

Completamento dello studio (Stimato)

30 giugno 2028

Date di iscrizione allo studio

Primo inviato

22 settembre 2026

Primo inviato che soddisfa i criteri di controllo qualità

28 ottobre 2026

Primo Inserito (Effettivo)

2 novembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

3 novembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

2 novembre 2026

Ultimo verificato

1 novembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 2025.519

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

SÌ

Descrizione del piano IPD

only IPD used in the results publication will be shared

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .