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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR access, you need to be a research investigator sponsored by an NIH recognized institution with federal wide assurance. See Request Access for more information. Request an account here.

Warning Notice

This is a U.S. Government computer system, which may be accessed and used only for authorized Government business by authorized personnel. Unauthorized access or use of this computer system may subject violators to criminal, civil, and/or administrative action.

All information on this computer system may be intercepted, recorded, read, copied, and disclosed by and to authorized personnel for official purposes, including criminal investigations. Such information includes sensitive data encrypted to comply with confidentiality and privacy requirements. Access or use of this computer system by any person, whether authorized or unauthorized, constitutes consent to these terms. There is no right of privacy in this system.

You have logged in with a temporary password. Please update your password. Passwords must contain 8 or more characters and must contain at least 3 of the following types of characters:

NDAR provides six ways to query and download data.

Each of these capabilities allows you to inspect and download the data based upon laboratory or paper or filter results using general search, by data dictionary item or our new query by concept and omicSearch, which are in beta release. Soon, you will be able to filter by any combination of each of these capabilities.

General – Common fields such as scores, types of experiments (e.g. imaging, omics, eeg) performed, and omic results enable you to filter subjects across all of NDAR and its federated repositories.

Data Dictionary – Download data by filtering on specific elements within a data structure (e.g. age between 24 and 36 months and gender equal to male). Soon we will be adding the ability to apply these filters across multiple data structures.

Data from Papers – Download all data from a Published Study. The NIH encourages the sharing of data directly associated with a publication or result.

Data from Labs – Download all shared data from a particular lab.

Concept (beta) – Select subjects based upon ontological concepts across all NDAR data.

omicSearch (beta) – Select subjects based upon omic alterations.