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Brain scan study seeks clues to memory decline in older adults

NCT ID NCT03860857

Knowledge-focused Sponsor: University of California, Irvine 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at why some people's thinking and memory get worse as they get older. Researchers will use brain scans and memory tests in 300 healthy adults aged 60 and older to find early signs of Alzheimer's disease. The goal is to better understand how the brain changes over time, not to test a treatment.

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.

Phase

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 300 people

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

Started

May 2018

Expected to finish

Dec 2027

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.

Ages

60 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. Aged 60 or older; 2. Speaks fluent English or Spanish; 3. Visual and auditory acuity adequate for neuropsychological and computerized testing; 4. Good general health with no disease(s) expected to interfere with the study; 5. Willing and able to participate for the duration of the study and in all study procedures including MRI and PET; 6. Normal cognition defined as a Clinical Dementia Rating of 0 and a Mini-Mental State Examination score of 25 or higher. FAST Stage 1 or 2. 7. Subjective memory or other cognitive complaints will be included. Exclusion Criteria: 1. Significant co-morbid neurologic disease such as Parkinson's disease, multiple sclerosis, brain cyst, tumor or aneurysm; 2. Major health conditions, except for Type II diabetes mellitus, hypercholesterolemia, and hypertension, which are NOT exclusionary for this study given their high prevalence in our target populations; 3. Significant psychiatric disorders such as schizophrenia, bipolar disorder, or attention-deficit hyperactivity disorder, except for depression and anxiety, which are NOT exclusionary for this study given their high prevalence in our target populations; 4. Existing diagnosis of dementia or mild cognitive impairment; 5. Alcohol or substance abuse or dependence within the past 2 years (DSM-IV criteria); 6. MRI contraindications, e.g. pacemakers, aneurysm clips, artificial heart valves, ear implants, metal fragments or foreign objects in the eyes, skin or body. Females who are pregnant or trying to get pregnant are also excluded; 7. PET contraindications, e.g. significant prior radiation exposure and pregnancy.

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Conditions

The condition(s) this trial relates to.

Alzheimer disease Cognitive Dysfunction

As listed by the trial registrant

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

Alzheimer disease Cognitive decline Cognitive impairment

How to take part

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

  1. The places running it

    1 site. 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

  • University of California, Irvine

    RECRUITING

    Irvine, California, 92697, United States

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