Actively Recruiting

Phase Not Applicable
Age: 50Years - 85Years
All Genders
ID06669182

Effects of Cerebellar Transcranial Magnetic Stimulation on Patients With Alzheimer's Disease: A Multicenter Randomized Controlled Trial

Led by Xijing Hospital · Updated on 2025-11-24

100

Participants Needed

4

Research Sites

4 weeks

Total Duration

On this page

Sponsors

X

Xijing Hospital

Lead Sponsor

T

Tang-Du Hospital

Collaborating Sponsor

AI-Summary

What this Trial Is About

Alzheimer's disease (AD) is a leading cause of dementia characterized by progressive cognitive decline. This trial investigates the use of cerebellar intermittent theta-burst stimulation (CRB-iTBS) to improve cognitive function in people with mild Alzheimer's disease. Researchers aim to assess the treatment's safety and effectiveness in changing the Clinical Dementia Rating-Sum of Boxes (CDR-SB) score over three months, offering a potential new therapy to improve quality of life for those affected. Participants will be randomly assigned to receive either active CRB-iTBS or a sham version. The active treatment involves daily stimulation sessions for four weeks, followed by once-weekly sessions for eight weeks, targeting the bilateral cerebellar dentate nuclei. This noninvasive brain stimulation is delivered using a device with specific parameters including 50Hz frequency and 100% resting motor threshold intensity. The study is double-blind, meaning neither participants nor researchers know which treatment is given, ensuring unbiased results. During the study, participants will undergo assessments including cognitive tests like the Mini Mental State Examination (MMSE), activities of daily living, neuropsychiatric inventory, and brain MRI scans at various points up to 36 weeks. Researchers will monitor changes in cognition and brain function while tracking safety and treatment adherence. The entire participation spans over several months with evaluations at baseline, 12, 24, and 36 weeks to understand short- and longer-term effects.

CONDITIONS

Brief Title

Advantage of Cerebellar Transcranial Magnetic Stimulation in Alzheimer's Diseases (ACT-AD)

Who Can Participate

Age: 50Years - 85Years
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Age between 50 and 85 years old
  • Meet NIA-AA core clinical criteria for possible Alzheimer's disease dementia with elevated p-tau and decreased amyloid beta markers
  • MMSE score between 18 and 26 points; CDR score between 0.5 and 1 point
  • Stable treatment with acetylcholinesterase inhibitors, NMDA receptor antagonists, or mannequine therapy for at least 12 weeks
  • Have at least one adult caregiver
  • Patient or legal guardian has signed informed consent
Not Eligible

You will not qualify if you...

  • Neurodegenerative disorders other than Alzheimer's disease
  • Significant intracranial focal or vascular pathology on brain MRI
  • History of seizures except childhood febrile seizures
  • Current major depressive disorder or psychotic disorders within the past 5 years
  • GDS score of 8 or higher at baseline
  • Cerebrovascular disease, severe infection, malignant tumor, or severe organ dysfunction
  • Pregnant or lactating women
  • Contraindications for TMS or MRI such as metal implants or pacemakers
  • Participation in Alzheimer's disease clinical trials within 6 months prior to enrollment

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

1 visit (in-person)

Treatment

Duration - 12 weeks

Participants receive intermittent Theta-Burst Transcranial Magnetic Stimulation targeting the cerebellar dentate nuclei to assess its effect on cognitive function in Alzheimer's disease.

5 visits per week for 4 weeks, then 1 visit per week for 8 weeks

Follow-up

Duration - 24 weeks

Participants are monitored to assess the longer-term effects and safety after completing the treatment.

Visits at 24 and 36 weeks after treatment start

Trial Site Locations

Total: 4 locations

1

Xijing Hospital of Air Force Military Medical University

Xi'an, Shaanxi, China, 710032

Actively Recruiting

2

Tangdu Hospital of Air Force Military Medical University

Xi'an, Shannxi, China

Actively Recruiting

3

The First Affiliated Hospital of Xi'an Medical University

Xi'an, Shannxi, China

Actively Recruiting

4

The Third Hospital of Xi'an

Xi'an, Shannxi, China

Actively Recruiting

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How is the study designed?

Study Type

INTERVENTIONAL

Masking

TRIPLE

Allocation

RANDOMIZED

Model

PARALLEL

Primary Purpose

TREATMENT

Number of Arms

2

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Published Research Related To This Trial

Chronic deep cerebellar stimulation promotes long-term potentiation, microstructural plasticity, and reorganization of perilesional cortical representation in a rodent model.

Jessica Cooperrider, Havan Furmaga, Ela Plow...

https://pubmed.ncbi.nlm.nih.gov/24990924

A meta-analysis of non-invasive brain stimulation (NIBS) effects on cerebellar-associated cognitive processes.

Rachele Pezzetta, Filippo Gambarota, Vincenza Tarantino...

https://pubmed.ncbi.nlm.nih.gov/38101590

Cerebellar dentate nucleus functional connectivity with cerebral cortex in Alzheimer's disease and memory: a seed-based approach.

Giusy Olivito, Laura Serra, Camillo Marra...

https://pubmed.ncbi.nlm.nih.gov/32081466

Dentate Nucleus: Connectivity-Based Anatomic Parcellation Based on Superior Cerebellar Peduncle Projections.

Abdullah Emre Tacyildiz, Berra Bilgin, Abuzer Gungor...

https://pubmed.ncbi.nlm.nih.gov/34062299

The critical need to develop tools assessing cerebellar reserve for the delivery and assessment of non-invasive cerebellar stimulation.

Mario Manto, Shinji Kakei, Hiroshi Mitoma

https://pubmed.ncbi.nlm.nih.gov/33397496