Towards Interoperable Clinical Trial Registries: Design and Implementation of a Prototypical Registry based on Fast Healthcare Interoperability Resources (FHIR) (Preprint)
BACKGROUND Clinical trial registries increase transparency in medical research by making information and results of planned, ongoing, and completed studies publicly available. However, the registration of clinical trials remains a time-consuming manual task complicated by the fact that often the same studies need to be registered in different registries with different data entry requirements and interfaces. OBJECTIVE Investigate how Health Level 7 (HL7) Fast Healthcare Interoperability Resources (FHIR) may be used as a standardized format for exchanging and storing clinical trial records. METHODS We designed and prototypically implemented an open-source central trial registry containing records from university hospitals which are automatically exported and updated by local study management systems. RESULTS We provide an architecture and implementation of a multi-site clinical trials registry based on HL7 FHIR as a data storage and exchange format. CONCLUSIONS The results show that FHIR resources establish a harmonized view of study information from heterogeneous sources by enabling automated data exchange between trial centers and central study registries.