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Find more clinical trials

Alzheimer Prevention Trials (APT) Webstudy

Start: December 20, 2017
End: April 30, 2023
Enrollment: 200000

What Is This Study About?

The Alzheimer Prevention Trials (APT) Webstudy is an online registry designed to accelerate enrollment for Alzheimer's disease clinical trials by identifying and tracking individuals who may be at higher risk for developing Alzheimer's dementia. After signing up, participants will go online to fill out a brief assessment of their cognitive abilities and complete a 20-minute test to assess their memory and thinking skills. The test will be repeated every three months, and participants will have access to their scores. Participants may also be invited for in-person testing at a clinical site, involving either a brain scan or a lumbar puncture (spinal tap) to look for beta-amyloid, a protein that accumulates abnormally in the brains of people with Alzheimer's disease. If those tests indicate higher risk, the participant may then be notified of clinical trials that he or she would be eligible for. Participants can take part in the program without volunteering for clinical trials. Enrollment in this registry is online and study participation is available nationwide.

Do I Qualify To Participate in This Study?

Minimum Age: 50 Years

Maximum Age: 85 Years

Must have:

  • Willing to participate in remote longitudinal cognitive testing and possible referral for biomarker assessment based on risk

Must NOT have:

  • Evidence of dementia

If I Qualify, Who Do I Contact?

Contact study personnel listed either under the general study contact or the location nearest you.


Who Is the General Study Contact?

For more information and to enroll, visit

Need Help?

Contact NIA’s Alzheimer’s and related Dementias Education and Referral (ADEAR) Center at 800-438-4380 or email ADEAR.

Where Is This Study Located?

University of Southern California (Enrollment in this registry is online and study participation is available nationwide.)
Los Angeles, CA 90033

Who Sponsors This Study?

Lead: University of Southern California

Collaborator Sponsor

  • National Institute on Aging (NIA)
  • Brigham and Women's Hospital
  • Cleveland Clinic

Source: ID: NCT03638583

An official website of the U.S. government, managed by the National Institute on Aging at the National Institutes of Health