Sharing Alzheimer’s research data with the world

The Alzheimer’s Disease Neuroimaging Initiative (ADNI) is a longitudinal, multi-center, observational study.

The overall goal of ADNI is to validate biomarkers for Alzheimer’s disease (AD) clinical trials.

For Researchers

About Data+Samples

Learn About ADNI data and samples

Access Data

Access data through IDA

For Non-Researchers

Impact of ADNI

See the impact that ADNI has had on ADRD Research

This tool provides interactive views of aggregate-level clinical data contributed longitudinally by over 2,500 participants around the U.S. and Canada.

2026 Alzheimer’s Disease Neuroimaging Initiative

This website is funded by the Alzheimer’s Disease Neuroimaging Initiative

Due to serious data quality concerns, all data with PTIDs containing the format 381_S_10### have been removed from the ADNI data repository. ADNI leadership strongly advises that data with these PTIDs not be used in any data analysis, submission of abstracts, or publications. Furthermore, ADNI leadership requests that any abstracts or papers which have been submitted using this data be appropriately revised due to concerns with data quality. More information click here.