AbstractBackgroundIn early 2024, 25 research-ready nurses specialising in IBD joined the United Kingdom IBD Nurse Research Network (UK IBD NRN). This network is dedicated to collaborating on national service evaluation and research initiatives, aiming to enhance service delivery and improve patient experiences within IBD care. Each year, the network will undertake one project, with a ballot for ideas held towards the end of the project. The first initiative focuses on monitoring advanced therapies (AT-IBD) used in the UK for treating IBD.Current recommendations for monitoring advanced therapies in IBD remain ambiguous, and the efficacy of proactive therapeutic drug monitoring (TDM) is still uncertain. To address this, we sought to explore the variations in monitoring practices across IBD services in the UK, focusing on key areas such as access to medication, adherence to monitoring protocols, and the effectiveness of therapeutic drug monitoring.MethodsData collection instruments using REDCap were created and launched in November 2024. Data includes site demographics, a minimum of ten and a maximum of 25 reactively and proactively monitored cases. The case data is collected from retrospective monitoring events and anonymised. Descriptive statistics are used to report results.ResultsSeventeen unique users are entering data from 15 sites. The survey is open to all four nations of the UK. Responses have been received in England and Wales. Of the 17 users (15;82.4%) reported having had training to interpret blood results. IBD patient population was reported by seven out of eleven sites, with a total of 39,843 reported. Two sites shared the entire local population, and three were reported as unknown. The seven sites that reported the IBD patient population used an electronic health record. There is variance in the pre-screening undertaken (Figure 1);access to advanced therapies appears different, with some sites not having access to newer small-molecule medications (Figure 2).There is wide variation in routine and TDM frequency across all therapies.ConclusionThe AT-IBD project is ongoing, with full results anticipated to provide insights into current practices for monitoring advanced therapies in the UK. The collected data may offer valuable insights regarding adherence and the effectiveness of advanced therapy monitoring, particularly concerning patient safety and outcomes. The UK IBD NRN remains committed to providing opportunities for training, collaboration, and research for IBD nurses across the UK.