Community-based Screening for Alzheimer's Disease (CSAD)

April 29, 2026 updated by: Kuang XiaoJun

Stratified Screening of Blood Biomarkers for Alzheimer's Disease: a Prospective, Real World, Community-based Study

The goal of this prospective, multicenter, observational cohort study is to evaluate the screening performance of blood-based biomarkers for Alzheimer's disease (AD) in a real-world community screening setting, and to establish the population baseline levels and reference intervals of these biomarkers in Chinese older adults.

The main questions it aims to answer is:

What is the clinical screening value of blood biomarkers (phosphorylated tau 217 to amyloid β 42 ratio [pTau217/Aβ42] and glial fibrillary acidic protein [GFAP]) for AD among community-dwelling older adults? Eligible study participants will be randomly enrolled from community-dwelling older adults undergoing routine physical examinations and outpatient clinic attendees. All enrolled participants will undergo AD screening via blood biomarker testing. Participants with positive blood biomarker results (defined as abnormal pTau217/Aβ42 ratio and/or GFAP levels) will further complete a full battery of cognitive scale assessments, including the Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), Activities of Daily Living (ADL) scale, and 17-item Hamilton Depression Rating Scale (HAMD-17). In addition, 15% of participants with negative blood biomarker results, selected via random sampling, will also complete the same cognitive scale assessments.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

3000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China
        • Recruiting
        • Fengcheng Community Health Service Center
        • Contact:
          • Zhongming Sheng
          • Phone Number: 021-57131233
      • Shanghai, Shanghai Municipality, China
        • Recruiting
        • Fengpu Community Health Service Center
        • Contact:
          • Zhiping Jin
          • Phone Number: 021-37136190
      • Shanghai, Shanghai Municipality, China
        • Recruiting
        • Qingcun Community Health Service Center
        • Contact:
          • Jingxin Zhu
          • Phone Number: 021-57561250
      • Shanghai, Shanghai Municipality, China
        • Recruiting
        • Xidu Community Health Service Center
        • Contact:
          • Xiaoqing Gu
          • Phone Number: 021-37130155

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Community-dwelling Chinese older adults recruited from community physical examination and outpatient settings across 4 multicenter sites, who voluntarily participate in Alzheimer's disease screening and meet the study's eligibility criteria.

Description

Inclusion Criteria:

  • Aged 60-80 years
  • Capable of normal communication and able to complete the questionnaire

Exclusion Criteria:

  • Severe mental disorders
  • Severe visual, auditory, comprehension or mobility impairments
  • Current participation in other health intervention clinical studies
  • Severe renal insufficiency, heart failure, cerebrovascular disease, anemia, hyperthyroidism, hypothyroidism
  • Multiple cerebral infarctions, severe white matter hyperintensities, history of cerebral hemorrhage, current anticoagulant use, MRI abnormalities (cortical iron deposition, cerebral contusion)
  • Unable to comply with study procedures with no legal guardian

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Screening group
Other: No study-specific intervention
This is a purely observational cohort study with no intervention assigned to participants.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Blood biomarkers （pTau217、Aβ42、GFAP）
Time Frame: Baseline (at enrollment)
Baseline (at enrollment)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Kuang XiaoJun

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 1, 2026

Primary Completion (Estimated)

March 31, 2027

Study Completion (Estimated)

March 31, 2028

Study Registration Dates

First Submitted

April 29, 2026

First Submitted That Met QC Criteria

April 29, 2026

First Posted (Actual)

May 6, 2026

Study Record Updates

Last Update Posted (Actual)

May 6, 2026

Last Update Submitted That Met QC Criteria

April 29, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IRB2026KY01802

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Cognitive Impairment

Clinical Trials on No study-specific intervention

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Morocco

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe