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5,000 volunteers join hunt for brain disease clues

NCT ID NCT03592563

Knowledge-focused Sponsor: Chinese University of Hong Kong Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This long-term study is tracking 5,000 adults in Hong Kong who either have a brain disease (like stroke or dementia) or are at high risk due to family history or early signs. Researchers will collect medical records and questionnaires every 6 months to find what factors lead to brain diseases. The goal is to learn how to preserve brain health, but no treatment or drug is being tested.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could reveal key risk factors for brain diseases like stroke and dementia, pointing toward better prevention strategies.
What could go wrong
This is an observational study, not a treatment trial. It may take years to yield clear results, and findings might not apply to everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 5,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2019

Expected to finish

Dec 2048

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

1. Chinese ONLY 2. Hong Kong Resident

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Adult ≥ 18 years of age 2. Fulfilling criteria for membership in one of these three groups: * Red group: established diagnosis of one or more neurological and/or psychiatric conditions * Yellow group: high-risk to develop one or more neurological and/or psychiatric conditions 1. family history (first degree relative) one or more neurological and/or psychiatric conditions 2. examination, imaging or laboratory findings consistent with pre-symptomatic stages of one or more neurological and/or psychiatric disorders * Green group: not meeting criteria for Red or Yellow groups, but interested in longitudinal research on maintenance and/or improvement of brain health 3. Subject provides informed consent by signing and dating the written informed consent form 4. Subject is willing to answer health questionnaires and be followed longitudinally Exclusion Criteria: * None

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Conditions

The condition(s) this trial relates to.

Alzheimer disease Behavior brain disorder brain ischemia dementia ischemic stroke stroke disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Alzheimer disease Brain diseases Brain ischemia Dementia Health attitude Health knowledge, attitudes, practice Health personnel attitude Healthy aging Stroke Stroke syndrome Stroke, acute Stroke, ischemic

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Chinese University of Hong Kong

    RECRUITING

    Hong Kong, Hong Kong

  • The Chinese University of Hong Kong

    RECRUITING

    Hong Kong, Hong Kong

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