NCT05971030

Brief Summary

Alzheimer's disease (AD) is a common neurodegenerative disease characterized by progressive cognitive impairment and memory impairment, and is also a major cause of global dementia, characterized by progressive decline in memory and daily living behavior. The incidence rate of AD increases with age. The prevalence rate of AD among men over 65 years old in China is 3.4%, and that of women is 7.7%, with a total prevalence rate of 5.9%. Among them, people over 65 years old can live for an average of 4 to 8 years after being diagnosed with Alzheimer's disease. According to statistics, there were approximately 5.98 million AD patients in China in 2005, reaching 10.2 million in 2020 and 22.5 million by 2040, making it the largest country with AD. At present, the treatment of AD is mostly limited to drug therapy, including Acetylcholine enzyme inhibitor, N-methyl-D-aspartate receptor antagonist and brain cell metabolism promoter. Although there are many types of drugs, their efficacy is not satisfactory, as they not only cannot effectively prevent and cure AD, but also cannot slow down the progression of AD. Regarding the surgical treatment of AD, neuromodulatory surgery, especially DBS (Deep Brain Electrical Stimulation), involves implanting stimulation electrodes into deep neural nuclei in the brain and performing electrical stimulation to change the excitability of the corresponding nuclei or neural circuits, and has been included in alternative treatment plans. In the past 20 years, DBS technology has been continuously explored for the treatment of AD, but an increasing number of clinical trials have shown that there is no effective target for AD-DBS. Therefore, there is an urgent need for new treatment methods to improve the current treatment status.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
3

participants targeted

Target at below P25 for not_applicable alzheimer-disease

Timeline
Completed

Started Jul 2023

Geographic Reach
1 country

1 active site

Status
unknown

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 20, 2023

Completed
10 days until next milestone

Study Start

First participant enrolled

July 30, 2023

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 2, 2023

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 30, 2025

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 30, 2025

Completed
Last Updated

August 2, 2023

Status Verified

June 1, 2023

Enrollment Period

1.8 years

First QC Date

July 20, 2023

Last Update Submit

July 30, 2023

Conditions

Outcome Measures

Primary Outcomes (1)

  • Auditory verbal learning test (AVLT) before and after DBS

    ALVT will be performed before and after DBS operations to examine the AD. patients' ability.

    1 months before DBS, 1 month, 2 months, 3 months, 6 months, and 12 months after DBS.

Secondary Outcomes (2)

  • Mini-mental State Examination (MMSE) before and after DBS

    1 months before DBS, 1 month, 2 months, 3 months, 6 months, and 12 months after DBS.

  • Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-COG)

    1 months before DBS, 1 month, 2 months, 3 months, 6 months, and 12 months after DBS.

Study Arms (1)

CBS for mPFC and dlPFC

EXPERIMENTAL

Case series of AD patients who accept CBS for mPFC and dlPFC

Device: Cortical brain stimulation of mPFC and dlPFC

Interventions

Left medial prefrontal cortex combined with dorsolateral prefrontal cortex electrical stimulation

CBS for mPFC and dlPFC

Eligibility Criteria

Age40 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Male or female aged 40 to 70;
  • eets the diagnostic criteria for mild to moderate AD;
  • A CDR score of 0.5 or 1.0;
  • The MMSE score is between 18 and 28;
  • Regularly taking cholinesterase inhibitors for more than 6 months

You may not qualify if:

  • Existence of brain structural abnormalities (such as brain tumors, cerebral infarction, and intracranial hematoma);
  • Suffering from other neurological or psychiatric diseases;
  • Accompanying comorbidities that are not suitable for surgical treatment;
  • Individuals with contraindications for MRI or PET testing

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Xuanwu Hospital

Beijing, China

RECRUITING

MeSH Terms

Conditions

Alzheimer Disease

Condition Hierarchy (Ancestors)

DementiaBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesTauopathiesNeurodegenerative DiseasesNeurocognitive DisordersMental Disorders

Central Study Contacts

Yuqing Zhang

CONTACT

Yan Yin

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: case series
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 20, 2023

First Posted

August 2, 2023

Study Start

July 30, 2023

Primary Completion

May 30, 2025

Study Completion

July 30, 2025

Last Updated

August 2, 2023

Record last verified: 2023-06

Data Sharing

IPD Sharing
Will share

We will publish our results once the study finished

Shared Documents
CSR
Time Frame
after the study finished

Locations