TARGET Registry A Project of the German Network for Intestinal Diseases in Cooperation With Other Corporate Partners

Crohn Disease, Indeterminate Colitis, Ulcerative Colitis

By capturing possible or known risk factors, it will be possible to recognize connections between these risk factors and the disease, thus obtaining valuable insights into the cause of the disease. This in turn facilitates an improved evaluation of the treatment situation as well as influencing future framework conditions for preventive measures and planning treatments. Disease registries are thus crucial for the planning and structuring of health policies. The present registry protocol serves as a basis for the proper implementation of a registry for patients with chronic inflammatory bowel diseases. It describes the study rationale, objectives, design, participant groups, procedures and evaluation methods. Furthermore, it defines the responsibilities of each person involved in maintaining the registry and also forms the basis for decisions regarding evaluation by the Ethics Committee.

In view of the high prevalence and currently unsatisfactory treatment status, there is a significant medical demand for more effective treatment options. These require greater knowledge about the condition in the form of full disease progressions while exposed to a wide range of different treatment concepts and influencing factors. It has been possible to significantly increase scientific understanding of the pathogenesis of ulcerative colitis and Crohn's disease over the last few decades. Clinical and experimental results indicate a causal link with gastrointestinal barrier dysfunction and defective regulation of the immune system. However, no evidence has been found to prove that patients with the disease develop an immune deficiency by themselves, resulting in an increased susceptibility to bacterial or viral infections. Furthermore, there are unanswered questions concerning aetiology, risk factors and influencing factors for the early prediction of treatment responses. The aim of this registry is to expand on previous findings in the field of diagnostic and therapeutic pathways for patients with Crohn's disease, ulcerative colitis and indeterminate colitis undergoing routine administration of a targeted therapy (biologics or another targeted therapy such as Janus kinase therapy) and various different treatment approaches. A data pool is to be generated for this purpose, in order to * analyse disease progression * systematize findings about treatment processes * identify potential influencing factors * review any new diagnostic procedures * identify potential test subjects for further study * evaluate the safety of various treatment concepts A specific objective has not been defined for this registry as a registry does not per se need to build upon the foundation of a theoretically-deduced research hypothesis. Rather, it acts as a gateway for generating a systematic data repository. The registry offers researchers the opportunity to formulate their own research hypotheses based on the collected data and to then use the generated data pool to attempt to test their hypothesis. Additional data/variables could also be collected as necessary in order to answer certain questions.

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