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Brain scans track tau changes after Alzheimer's antibody treatment

NCT ID NCT06723015

Knowledge-focused Sponsor: Mayo Clinic Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study uses special brain scans (tau PET) to see how anti-amyloid immunotherapy affects tau protein buildup in people with mild Alzheimer's disease. About 135 participants will get two tau PET scans—one before starting treatment and another 12-18 months after finishing it. The goal is to learn whether clearing amyloid plaques also slows tau spread, which could improve future treatments.

What this could mean

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

Active substance
18F-AV-1451 (a radioactive tracer for tau PET scans)
What this could lead to
If successful, this could help doctors understand whether anti-amyloid therapies slow tau spread in the brain, guiding future Alzheimer's treatment.
What could go wrong
This is an observational imaging study, not a treatment trial. It may not show clear changes, and results may not apply to all patients.

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 135 people

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

Started

Nov 2025

Expected to finish

Aug 2028

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

50 to 90 years

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 * Age 50-90 years * Male or female * Mild cognitive impairment due to AD or mild AD * Amyloid positive via CSF or PET * Meets other eligibility criteria for anti-amyloid immunotherapy * Subject or delegate provides informed consent Exclusion Criteria * Subjects unable to lie down without moving for 10 minutes. * Women who are pregnant or cannot stop breast feeding for 24 hours. * Claustrophobic patients unable to tolerate the scans (no sedation can be offered).

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Mayo Clinic

    Rochester, Minnesota, 55905, United States

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