The BRIDG project: a technical report.
OBJECTIVE
The Biomedical Research Integrated Domain Group (BRIDG) project is a collaborative initiative between the National Cancer Institute (NCI), the Clinical Data Interchange Standards Consortium (CDISC), the Regulated Clinical Research Information Management Technical Committee (RCRIM TC) of Health Level 7 (HL7), and the Food and Drug Administration (FDA) to develop a model of the shared understanding of the semantics of clinical research.


METHODS
The BRIDG project is based on open-source collaborative principles and an implementation-independent, use-case driven approach to model development. In the BRIDG model, declarative and procedural knowledge are represented using the Unified Modeling Language (UML) class, activity and state diagrams.


METHODS
The BRIDG model currently contains harmonized semantics from four project use cases: the caXchange project and the patient study calendar project from caBIG; the standard data tabular model (SDTM) from CDISC; and the regulated products submission model (RPS) from HL7. Scalable harmonization processes have been developed to expand the model with content from additional use cases.


RESULTS
The first official release of the BRIDG model was published in June 2007. Use of the BRIDG model by the NCI has supported the rapid development of semantic interoperability across applications within the caBIG program.


CONCLUSIONS
The BRIDG project has brought together different standards communities to clarify the semantics of clinical research across pharmaceutical, regulatory, and research organizations. Currently, the NCI uses the BRIDG model to support interoperable application development in the caBIG, and CDISC and HL7 are using the BRIDG model to support standards development.
Fridsma
Douglas B
DB
Department of Biomedical Informatics, Arizona State University, Phoenix, AZ 85004-2157, USA. fridsma@asu.edu
Evans
Julie
J
Hastak
Smita
S
Mead
Charles N
CN
D035843:Biomedical Research / Q000145:classification*; D002986:Clinical Trials as Topic / Q000145:classification / Q000592:standards*; D003299:Cooperative Behavior; D006801:Humans; D054547:National Cancer Institute (U.S.); D012660:Semantics; D009626:Terminology as Topic; D014481:United States