If your question is not answered here, or if you have further queries about ISRCTN, please contact the Study Support Service Helpdesk:
For the current cost of trial registration, please visit the ISRCTN website.
No, if you apply for an ISRCTN using the Central Portfolio Management System (CPMS) then the details of your study will be forwarded to the ISRCTN Registry and the ISRCTN editorial team will contact you in due course. Please do not apply directly to the ISRCTN Registry if you are registering for an ISRCTN via CPMS.
In the event that your study already has an ISRCTN or ClinicalTrials.gov reference, you should advise the NIHR Clinical Research Network of the appropriate reference number.
Following the ISRCTN registration, the ISRCTN Registry will inform the Study Coordinator (as recorded in CPMS) and the NIHR Clinical Research Network of the ISRCTN assigned to a specific research study. The allocated ISRCTN will automatically be added to the study record in CPMS.
It is the responsibility of the Study Coordinator or the Chief Investigator to ensure that the relevant ISRCTN information held in CPMS is current and correct by updating the ISRCTN information. Please note, any updates made to this information in CPMS will not be forwarded to the ISRCTN Registry following issue of the ISRCTN Number.
Please direct all of your queries to the Study Support Service Helpdesk firstname.lastname@example.org