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Could hormones explain Women's higher Alzheimer's risk?

NCT ID NCT03821857

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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how ovarian hormones might influence aging and Alzheimer's disease in women aged 60 and older. Researchers will use special PET scans to measure brain changes related to Alzheimer's. The goal is to better understand why women are more likely to develop the disease.

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 could help explain why women are at higher risk for Alzheimer's and guide future prevention strategies.
What could go wrong
This is an observational imaging study, not a treatment trial. It may not lead to direct benefits for participants or produce clear answers.

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 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 614 people

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

Started

Jun 2019

Expected to finish

May 2030

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

Female participants only

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.

Mayo Clinic Rochester- Inclusion Criteria: * Women who previously participated in this study * Currently aged 60 years and older * More than six months post chemotherapy or major surgery requiring general anesthesia * Willing and able to sign informed consent Exclusion Criteria: * Not able to read and speak English * In hospice * Claustrophobic * If undergoing Tau imaging, cannot have QT Prolongation Mayo Clinic Jacksonville- Inclusion Criteria: * African American Women * Currently aged 60 years and older * More than six months post chemotherapy or major surgery requiring general anesthesia * Willing and able to sign informed consent Exclusion Criteria: * Not able to read and speak English * In hospice * Claustrophobic * If undergoing Tau imaging, cannot have QT Prolongation

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Conditions

The condition(s) this trial relates to.

Alzheimer disease

As listed by the trial registrant

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

Alzheimer disease

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

  • Mayo Clinic

    RECRUITING

    Jacksonville, Florida, 32224, United States

  • Mayo Clinic

    ENROLLING_BY_INVITATION

    Rochester, Minnesota, 55905, United States

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