ISRCTN
type: NamingSystem
node role: treeRoot
id:
  v: ISRCTN
language:
  v: en
text:
  status:
    v: generated
  div:
    v: Generated Narrative: NamingSystem ISRCTN Summary Defining URL http://terminology.hl7.org/NamingSystem/ISRCTN Version 1.0.0 Name ISRCTN Title International Standard Randomised Controlled Trial Number Status active Definition The ISRCTN registry is a primary clinical study registry recognised by the World Health Organisation (WHO) and the International Committee of Medical Journal Editors (ICMJE) that accepts all clinical research studies (whether proposed, ongoing or completed), providing content validation and curation and the unique identification number necessary for publication. All study records in the database are freely accessible and searchable. ISRCTN supports transparency in clinical research, helps reduce selective reporting of results and ensures an unbiased and complete evidence base. The registry aims to include all interventional and non-interventional clinical studies that prospectively involve UK participants and evaluate biomedical or health-related outcomes. Studies conducted outside the UK or considered to be non-clinical studies (e.g. public health studies) can be registered on ISRCTN. Studies should ideally be registered prospectively (before recruitment starts). ISRCTN also accepts studies registered retrospectively once they are underway or after completion. See https://www.isrctn.com/. Publisher BioMed Central (BMC) Copyright Like other registries following the clinical trial registration standards published by the World Health Organization, the ISRCTN registry exists to keep in a standard format a freely accessible and searchable record of each registered study. The Terms and Conditions enable anyone to cite with attribution the details in each study record. They encourage unrestricted use of the metadata generated during the process of registration, updating or reporting. The CC BY licence allows readers (users) to copy, distribute and transmit the Database Contribution as long as it is attributed back to the Researcher. Readers are permitt…
url:
  v: http://terminology.hl7.org/NamingSystem/ISRCTN
version:
  v: 1.0.0
name:
  v: ISRCTN
title:
  v: International Standard Randomised Controlled Trial Number
status:
  v: active
kind:
  v: identifier
date:
  v: 2026-02-09T00:00:00-00:00
publisher:
  v: BioMed Central (BMC)
contact:
  name:
    v: ISRCTN; The Campus, 4 Crinan Street, London, N1 9XW, United Kingdom
  telecom:
    system:
      v: email
  telecom:
    system:
      v: url
    value:
      v: https://www.isrctn.com/
  telecom:
    system:
      v: phone
    value:
      v: +44 (0)20 3192 2009
responsible:
  v: BioMed Central (BMC)
description:
  v: The ISRCTN registry is a primary clinical study registry recognised by the World Health Organisation (WHO) and the International Committee of Medical Journal Editors (ICMJE) that accepts all clinical research studies (whether proposed, ongoing or completed), providing content validation and curation and the unique identification number necessary for publication. All study records in the database are freely accessible and searchable. ISRCTN supports transparency in clinical research, helps reduce selective reporting of results and ensures an unbiased and complete evidence base. The registry aims to include all interventional and non-interventional clinical studies that prospectively involve UK participants and evaluate biomedical or health-related outcomes. Studies conducted outside the UK or considered to be non-clinical studies (e.g. public health studies) can be registered on ISRCTN. Studies should ideally be registered prospectively (before recruitment starts). ISRCTN also accepts studies registered retrospectively once they are underway or after completion. See [https://www.isrctn.com/](https://www.isrctn.com/).
copyright:
  v: Like other registries following the clinical trial registration standards published by the World Health Organization, the ISRCTN registry exists to keep in a standard format a freely accessible and searchable record of each registered study. The Terms and Conditions enable anyone to cite with attribution the details in each study record. They encourage unrestricted use of the metadata generated during the process of registration, updating or reporting. The CC BY licence allows readers (users) to copy, distribute and transmit the Database Contribution as long as it is attributed back to the Researcher. Readers are permitted to alter, transform or build upon the Database Contribution, and to use the Database Contribution for commercial purposes. Please read full details at [http://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/).
unique id:
  type:
    v: uri
  value:
    v: https://www.isrctn.com/ISRCTN
  preferred:
    v: true
  comment:
    v: This is the URL endorsed by the TSMG and is considered authoritative.
  period:
    start:
      v: 2026-02-09