ISRCTN is a comprehensive registry that houses a wealth of information regarding clinical studies. Compliant with the guidelines set by the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) and the International Committee of Medical Journal Editors (ICMJE), the registry contains essential data pertaining to the inception of a study. With freely accessible and searchable study records, each one is assigned a unique ISRCTN ID, allowing for easy citation and reference.

Initially established in 2000 for randomized controlled trials (RCTs), the registry has expanded to encompass all studies focused on evaluating the effectiveness of health interventions in a human population. Collaborating with various organizations, ISRCTN aims to improve the transparency and accessibility of clinical trial data, making it available through the WHO clinical trial search portal and Be Part of Research. Study records within ISRCTN include key details and additional information such as study outputs, publication plans, and participating sites.

Researchers and users can register and update their clinical studies, search for specific studies based on various criteria, and even download data for further analysis. While the registry does not facilitate patient recruitment services, individuals in the UK seeking to participate in a study can visit Be Part of Research, while those in other countries should consult their medical practitioner. With a clear mission to promote transparency in health research, ISRCTN provides a standardized platform for registration and data sharing, ultimately contributing to the advancement of medical knowledge.

The dedicated ISRCTN customer charter reflects the commitment of the editorial staff to provide quality services and ensure the accessibility of information to the public. By choosing ISRCTN, researchers and users gain access to an invaluable resource that leads to greater transparency and collaboration in clinical research