Autoimmune diseases linked to cancers of the digestive tract
In a comprehensive study, researchers from the Department of Epidemiology at the Faculty of Medicine at the University of Augsburg have provided reliable evidence for a link between chronic inflammatory diseases and the development of tumours in the digestive tract. The results were recently published in eClinicalMedicine, which is part of the Lancet Group.
Using data from over 1.5 million patients from 47 studies, the researchers analysed the association between four autoimmune diseases, most of which are acquired in childhood or younger adulthood, and cancers of the gastrointestinal tract, liver and pancreas. "We obtained very robust results with minimal bias," says Dr Dennis Freuer, research associate at the Department of Epidemiology and head of the study.
The study shows that coeliac disease, systemic lupus erythematosus and type 1 diabetes increase the risk of several types of cancer of the digestive tract. These include stomach and bowel cancer. In particular, the risk of small bowel cancer increases by a factor of 4.2 if coeliac disease is present.
Multiple sclerosis, on the other hand, is associated with a lower risk of certain types of cancer, such as pancreatic, oesophageal and rectal cancer.
"Our results underline the need for targeted monitoring of patients with autoimmune diseases and the development of personalised cancer prevention programmes," explains Julia Reizner, first author of the paper. Prof Christa Meisinger, physician and epidemiologist on the research team, emphasizes the role of chronic inflammation as a possible driver for the development of cancer and calls for further research into the underlying mechanisms, including the effects of immunotherapies. The study thus provides important impetus for clinical practice and the development of preventive strategies.
Wissenschaftlicher Ansprechpartner:
Dr. rer. biol. hum. Dennis Freuer, M.Sc.
Wissenschaftlicher Mitarbeiter Epidemiologie
Telefon: +49 821 598 - 6474
dennis.freuer@med.uni-augsburg.de
Prof. Dr. med. Christine Meisinger, MPH
Stellvertretende Lehrstuhlleitung Epidemiologie
Telefon: +49 821 598 - 6476
christine.meisinger@med.uni-augsburg.de
Originalpublikation:
Evaluating the risk of digestive system cancer in autoimmune disease patients: a systematic review and meta-analysis focusing on bias assessment. Julia Reizner, Simone Fischer, Jakob Linseisen, Christa Meisinger, Dennis Freuer. eClinicalMedicine Volume 87, September 2025.
https://doi.org/10.1016/j.eclinm.2025.103410
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