Brain scans track tau changes after Alzheimer's antibody treatment
NCT ID NCT06723015
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
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 135 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Aug 2028
An estimate. End dates often move.
- Lead sponsor
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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
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50 to 90 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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.
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The places running it
1 site. The list below names each one and where it is.
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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.
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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
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Mayo Clinic
Rochester, Minnesota, 55905, United States
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