History of Changes and the ClinicalTrials.gov Archive Site
Information in a ClinicalTrials.gov record can be modified at any time by the data provider.
The display at ClinicalTrials.gov shows the most recent version for each data element.
The date first received and the date last updated are listed at the top of each record.
The full history of changes since the record was first received is available in the
archival version of the record on the ClinicalTrials.gov Archive Site.
Current Study:
The display at ClinicalTrials.gov shows the most recent version for each data element.
The date first received and the date last updated are listed at the top of each record.
The full history of changes since the record was first received is available in the
archival version of the record on the ClinicalTrials.gov Archive Site.
Current Study:
| ClinicalTrials.gov Identifier: | NCT02477800 |
|---|---|
| Study Title: | 221AD301 Phase 3 Study of Aducanumab (BIIB037) in Early Alzheimer's Disease (ENGAGE) |
| First Received: | June 18, 2015 |
| Last Updated: | June 2, 2017 |
Continue to the history of changes for this study on the


IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. 
