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The caDSR (Cancer Data Standards Registry and Repository) is a metadata repository based on the ISO/IEC 11179 Metadata Registry standard. It supports a broad community of users both inside and outside of NCI that have requirements to ensure the longevity and consistency of biomedical research data by registering metadata standards in caDSR.

What is a metadata standard? A metadata standard is a high level document which establishes a common way of structuring and understanding data, and includes principles and implementation issues for utilizing the standard. There are many metadata standards purposed for specific disciplines.

Content owners and end users have included include NCI and its partners in clinical trials, academic institutions (including NCI Designated Cancer Centers, SPOREs and NCTN/ETCTN), other NIH institutes (including NICHD, NHLBI, NCATS and NIDCR), other federal agencies (in particular the FDA), pharmaceutical companies, standards development organizations (e.g. CDISC) and a range of international biomedical organizations. For more information see the caDSR Collaborations and Use.