CTRU Leeds Research Portal

Leading innovative clinical trials research. Our clinical trials have a track record of informing how patients are treated in the UK and internationally.

Welcome to the Clinical Trials Research Unit (CTRU) at University of Leeds’ Research Portal. Through our Research Portal you can access trial specific information and online IT tools, such as randomisation and data entry.

We are a leading UK academic clinical trials unit (CTU) based in the Leeds Institute of Clinical Trials Research at the University of Leeds. If you would like to read more about our research please visit our Institute homepage.

We are currently working on building our Research Portal and new information will be added over the coming months, please bear with us during this period of development.


We collaborate and interact with the public in a variety of ways, from patients taking part in our trials, to sharing our findings with the public, and even collaborating with the public as co-researchers. We offer full support and guidance to any members of the public who work with us.
CTRU Leeds uses a variety of systems throughout our trials, from data capture solutions such as MACRO, to bespoke registration and randomisation systems such as our in-house GEN24 system. The CTRU's dedicated IS team ensures that our trial data is accurate, secure and consistent.
Funded by NIHR EME, TRITON is investigating a new treatment for IBS-D at 13 UK hospitals. 400 participants will receive either ondansetron or a placebo for 12 weeks, 80 will also take part in optional investigations into the mechanism of action of ondansetron.

Infrastructure Partners

This unit receives National Institute for Health Research CTU Support Funding. This funding has been awarded to support the unit in developing and supporting NIHR trials. 

We are a registered UKCRC Clinical Trials Network CTU and an NCRI Cancer Network CTU.