Qualified researchers can request access to ABCD shared data by following these steps:

1. Confirm Eligibility
   Ensure that you meet the eligibility criteria for data access.

2. Create or Log in to Your NDA Account
   An NDA account with an institutional email is required to request data access.

3. Submit a Data Access Request (DAR)
   Go to your Data Permissions Dashboard, select "Request Access" for the relevant Permission Group, and complete the electronic DAR.

The Data Permissions Dashboard lets you to view and manage your current and past data permissions, and to submit or renew requests for NDA Permission Groups, including ABCD.

Once approved, you will have access to query and download all repository data for one year. Summary data is available to all users. For full details on access criteria and the renewal process, visit Access Review.