Plain-English translation of NCT03638583 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Read our Alzheimer Disease research guide →The APT Webstudy is designed to identify people who may be at increased risk for developing Alzheimer's disease before symptoms appear. You'll complete online thinking and memory tests from home every three months. If your results suggest higher risk, you may be invited to an in-person clinic visit for additional blood tests and clinical assessments.
Alzheimer's disease develops gradually over many years, but early detection may make a difference in treatment options. This trial aims to find people at risk earlier, when interventions might be most helpful.
You likely qualify if…
You likely don't qualify if…
You'll register online and complete a secure informed consent process. Then you'll take online thinking and memory tests on your computer—these take about 30 minutes. You'll repeat these tests every three months for as long as you're in the study. If your test results show higher risk based on the study's algorithm, you'll be invited to visit a clinic partner near you for in-person assessments, including blood work and a clinical evaluation by a doctor.
AI-generated summary from trial data · Jul 4, 2026 · Not medical advice
United States
Collaborators
National Institute on Aging (NIA), Brigham and Women's Hospital
Enrollment target
~200,000 participants
Started
December 2017
Primary completion
April 2026
This trial's estimated completion date has passed — the record may not be fully up to date.
Age range
50 Years – 85 Years
Last updated on clinicaltrials.gov in July 2025.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
APT Webstudy Team
USC ATRI
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.