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Brain zap & blood test probe link between old concussions and memory decline

NCT ID NCT05446584

Knowledge-focused Sponsor: University of Texas Southwestern Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 21, 2026 · Updated 2 times

Summary

This study looks at whether a history of mild traumatic brain injury (like a concussion) is linked to biological changes in people with mild memory problems. Researchers will use a gentle brain stimulation technique and blood tests to explore this connection. The study involves 75 adults aged 55 and older who have mild memory issues, some with a past concussion and some without.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 75 people

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

Started

Apr 2023

Expected to finish

May 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

55 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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. Active diagnosis of amnestic mild cognitive impairment 2. Presence of an mTBI history for the mTBI+ group; absence of an mTBI history for a control sample 3. Female and male subjects 4. All races/ethnicities 5. Age 55 years and older 6. Fluent in English Exclusion Criteria: 1. Mild traumatic brain injury within past year 2. Lifetime history of moderate or severe brain injury 3. Lifetime major neurologic syndromes (e.g., stroke, epilepsy, brain tumor) 4. Lifetime major cardiovascular conditions (e.g., heart attack, heart failure) 5. Current substance use disorder 6. Current major psychiatric disorders (e.g., major depressive disorder, bipolar disorder) 7. Current vision or hearing impairment that interferes with testing 8. Any electronic and or metallic implants in the skull or brain 9. Current medication use known to alter HD-tDCS reactivity

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Conditions

The condition(s) this trial relates to.

Brain Concussion Cognitive Dysfunction traumatic brain injury

As listed by the trial registrant

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

Amnestic mild cognitive disorder Amnestic mild cognitive impairment Concussion, brain Mild cognitive impairment Mild traumatic brain injury

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 Texas Southwestern Medical Center

    RECRUITING

    Dallas, Texas, 75390, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.