NCT07827456

Brief Summary

This study aims to evaluate the efficacy and safety of tTIS treatment in patients with Parkinson's disease (PD). The study will enroll eligible PD patients and randomly assign them to two groups: Group A will first receive combined GPi and STN stimulation, followed by GPi stimulation one week later; Group B will first receive GPi stimulation, followed by combined GPi and STN stimulation one week later. The MDS-UPDRS Part III will be assessed at pre-stimulation baseline, immediately after stimulation, and at 30 and 60 minutes post-stimulation for each session, in order to evaluate and compare the therapeutic effects of tTIS targeting GPi alone versus combined GPi and STN stimulation on motor symptoms in PD patients, and to assess the differential efficacy of tTIS at different targets among PD patients with varying symptoms.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
26

participants targeted

Target at below P25 for not_applicable

Timeline
8mo left

Started Sep 2026

Shorter than P25 for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress7%
Sep 2026Jun 2027

First Submitted

Initial submission to the registry

September 14, 2026

Completed
1 day until next milestone

Study Start

First participant enrolled

September 15, 2026

Completed
3 days until next milestone

First Posted

Study publicly available on registry

September 18, 2026

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 10, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 10, 2027

Last Updated

September 21, 2026

Status Verified

September 1, 2026

Enrollment Period

9 months

First QC Date

September 14, 2026

Last Update Submit

September 18, 2026

Conditions

Keywords

Parkinson DiseaseTemporal Interference Stimulation

Outcome Measures

Primary Outcomes (1)

  • Change in Score on Part III (Motor Examination) of the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS)

    The motor function of patients was assessed using Part III of the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS-III), which has a total score range of 0 to 132. In this scale, a higher score indicates greater severity of motor symptoms and therefore a worse outcome, with 0 representing no impairment and 132 representing the most severe impairment. Changes in the score reflect the degree of improvement in motor function.

    at pre-stimulation baseline, immediately after stimulation, and at 30 and 60 minutes post-stimulation

Other Outcomes (2)

  • The incidence of SAE

    From the first stimulation session until the end of the study follow-up period (each stimulation session lasts for 30 minutes; total study duration including follow-up is 3 weeks). SAEs will be monitored and recorded continuously throughout this period.

  • All-cause mortality

    1month after randomization

Study Arms (2)

Experimental group A

ACTIVE COMPARATOR

Patients in this group receive individualized targeting based on MRI head modeling. During the medication-off period, they first undergo 130 Hz combined GPi and STN stimulation (GPi+STN), and one week later, they undergo 130 Hz GPi stimulation alone.

Device: Temporal Interference Stimulation (130 Hz)

Experimental group B

ACTIVE COMPARATOR

Patients in this group receive individualized targeting based on MRI head modeling. During the medication-off period, they first undergo 130 Hz GPi stimulation alone, and one week later, they undergo 130 Hz combined GPi and STN stimulation (GPi+STN).

Device: Temporal Interference Stimulation (130 Hz)

Interventions

All participants will receive individualized T1-weighted MRI scans for computational modeling to determine optimized electrode placement and stimulation parameters for transcranial temporal interference stimulation targeting the subthalamic nucleus. The stimulation protocol is designed to generate a focal 130 Hz interference field in the target region while minimizing cortical activation. Parameters including electrode positions and current intensity are customized based on each participant's unique neuroanatomy to ensure precise and tailored neuromodulation.

Experimental group AExperimental group B

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 18-75 years (inclusive), any gender.
  • Diagnosis of idiopathic Parkinson's disease according to the Chinese diagnostic criteria for Parkinson's disease (2016 edition).
  • Hoehn and Yahr stage 2-4 (inclusive) during the "off" state.
  • Documented response to levodopa (\>33% improvement), with a stable anti-parkinsonian medication regimen for at least 4 weeks prior to screening, and no dose adjustments during the study.
  • Voluntary signed informed consent, and ability to understand and comply with the study protocol to complete the study.
  • No significant cognitive impairment (Montreal Cognitive Assessment \[MoCA\] score ≥21).

You may not qualify if:

  • Inability or unwillingness to comply with the study protocol and/or inability to provide written informed consent;
  • Presence of a significant medical condition that may interfere with study procedures or confound the assessment of study endpoints;
  • Presence of a severe psychiatric disorder that may affect the participant's ability to comply with the study protocol;
  • A history of psychiatric disorders or current severe depression or anxiety;
  • Presence of metallic implants in the brain;
  • Known pregnancy or current breastfeeding;
  • Severe neurological disorders, such as a brain tumor;
  • Severe cardiac disease, including the presence of an implanted cardiac pacemaker;
  • Scalp lesions, inflammation, infection, active bleeding, or an increased bleeding tendency;
  • Any other current medical condition for which the use of transcranial electrical stimulation may pose an unacceptable risk;
  • A history of epilepsy or structural brain lesions, including severe cerebral atrophy or cerebrovascular disease;
  • Inability to undergo magnetic resonance imaging (MRI), such as because of claustrophobia or implanted metallic devices;
  • Inability to cooperate with or complete the required assessments; or any other condition that, in the investigator's judgment, makes the individual unsuitable for participation in the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Parkinson Disease

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

September 14, 2026

First Posted

September 18, 2026

Study Start

September 15, 2026

Primary Completion (Estimated)

June 10, 2027

Study Completion (Estimated)

June 10, 2027

Last Updated

September 21, 2026

Record last verified: 2026-09