The Controlled-Access Data tier contains demographic, clinical, and molecular data that, while stripped of direct patient identifiers, are individually unique. This tier requires user certification for data access.

Access to this data tier is available to researchers who:

1. Agree to restrict their use of the information to biomedical research purposes only,
2. Agree with the statements within TCGA Data Use Certification (DUC),
3. Have their institutions also certifiably agree to the statements within TCGA DUC, and
4. Complete the Data Access Request (DAR) form and receive approval from the Data Access Committee to be a TCGA data user.

Data within the Controlled-Access Data Tier include:

• All the data available in the Open-Access Data tier, and
• Demographic and clinical data up to the level of detail permitted by the contributing site IRB and that meet the specification of a HIPAA Limited Data set,
• Genome-wide genotypes, and
• Information linking all sequence traces to a single donor, whose associated data has been stripped of direct identifiers.

Key Human Subjects Protection and Data Access Resources:

• Human Subjects Protection and Data Access Policies
• Data Access Request (DAR) form
• Data Use Certification (DUC)

For more information on how to request access to the controlled-access data tier, click here.

To search TCGA Data, click here.