Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study

Objective Bile acid diarrhoea is a common cause of chronic diarrhoea. Increased levels of potentially carcinogenic bile acids in faeces, theoretically, may increase the risk of colorectal cancer in particular, but the long-term disease course is unknown. We aimed to investigate the overall and site-...

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Main Authors: Tine Jess, Nynne Nyboe Andersen, Gry Poulsen, Signe Wildt, Lars Kristian Munck, Aske Thorn Iversen, Christian Borup
Format: Article
Language:English
Published: BMJ Publishing Group 2024-04-01
Series:BMJ Open Gastroenterology
Online Access:https://bmjopengastro.bmj.com/content/11/1/e001340.full
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author Tine Jess
Nynne Nyboe Andersen
Gry Poulsen
Signe Wildt
Lars Kristian Munck
Aske Thorn Iversen
Christian Borup
author_facet Tine Jess
Nynne Nyboe Andersen
Gry Poulsen
Signe Wildt
Lars Kristian Munck
Aske Thorn Iversen
Christian Borup
author_sort Tine Jess
collection DOAJ
description Objective Bile acid diarrhoea is a common cause of chronic diarrhoea. Increased levels of potentially carcinogenic bile acids in faeces, theoretically, may increase the risk of colorectal cancer in particular, but the long-term disease course is unknown. We aimed to investigate the overall and site-specific cancer risk in bile acid diarrhoea.Design Adult patients with bile acid diarrhoea were identified using nationwide Danish registries from 2003 to 2020 by a diagnostic gold-standard 75-selenium tauroselcholic acid procedure followed within 6 months by sequestrant prescription. The risk of overall and site-specific cancers in cases with bile acid diarrhoea was compared with sex, age and comorbidity-adjusted matched controls. A competing risk model estimated cumulative incidence functions and cause-specific HRs.Results We identified 2260 patients with bile acid diarrhoea with a mean follow-up of 5.5 years (SD 4.2). The overall cancer risk was increased by an HR of 1.32 (95% CI 1.12 to 1.54). The risk of site-specific cancer was increased in 3 of 10 cancer groups: haematological, HR 2.41 (1.36 to 4.02); skin, HR 1.33 (1.01 to 1.71); and male genital cancers, HR 1.85 (1.11 to 2.92). No increased risk of colorectal cancer was detected in patients with bile acid diarrhoea, HR 0.73 (0.34 to 1.63).Conclusions Bile acid diarrhoea was associated with an increased overall risk of cancer, especially haematological cancers, but the risk of colorectal cancer was not increased. The lack of a diagnostic code for bile acid diarrhoea and potential residual confounding are limitations, and the findings should be replicated in other cohorts.
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spelling doaj-art-a6388eec66014d268a9876c8a2f0174c2025-02-07T01:00:11ZengBMJ Publishing GroupBMJ Open Gastroenterology2054-47742024-04-0111110.1136/bmjgast-2023-001340Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort studyTine Jess0Nynne Nyboe Andersen1Gry Poulsen2Signe Wildt3Lars Kristian Munck4Aske Thorn Iversen5Christian Borup6Center for Molecular Prediction of Inflammatory Bowel Disease, PREDICT, Department of Clinical Medicine, Aalborg University, Copenhagen, DenmarkDepartment of Gastroenterology, Zealand University Hospital Koge, Koge, DenmarkDepartment of Clinical Medicine, Aalborg University, Copenhagen, DenmarkDepartment of Gastroenterology and Hepatology, Hvidovre Hospital, Hvidovre, DenmarkDepartment of Gastroenterology, Zealand University Hospital Koge, Koge, DenmarkCenter for Molecular Prediction of Inflammatory Bowel Disease, Department of Clinical Medicine, The Faculty of Medicine, Aalborg University, Copenhagen, DenmarkDepartment of Gastroenterology, Zealand University Hospital Koge, Koge, DenmarkObjective Bile acid diarrhoea is a common cause of chronic diarrhoea. Increased levels of potentially carcinogenic bile acids in faeces, theoretically, may increase the risk of colorectal cancer in particular, but the long-term disease course is unknown. We aimed to investigate the overall and site-specific cancer risk in bile acid diarrhoea.Design Adult patients with bile acid diarrhoea were identified using nationwide Danish registries from 2003 to 2020 by a diagnostic gold-standard 75-selenium tauroselcholic acid procedure followed within 6 months by sequestrant prescription. The risk of overall and site-specific cancers in cases with bile acid diarrhoea was compared with sex, age and comorbidity-adjusted matched controls. A competing risk model estimated cumulative incidence functions and cause-specific HRs.Results We identified 2260 patients with bile acid diarrhoea with a mean follow-up of 5.5 years (SD 4.2). The overall cancer risk was increased by an HR of 1.32 (95% CI 1.12 to 1.54). The risk of site-specific cancer was increased in 3 of 10 cancer groups: haematological, HR 2.41 (1.36 to 4.02); skin, HR 1.33 (1.01 to 1.71); and male genital cancers, HR 1.85 (1.11 to 2.92). No increased risk of colorectal cancer was detected in patients with bile acid diarrhoea, HR 0.73 (0.34 to 1.63).Conclusions Bile acid diarrhoea was associated with an increased overall risk of cancer, especially haematological cancers, but the risk of colorectal cancer was not increased. The lack of a diagnostic code for bile acid diarrhoea and potential residual confounding are limitations, and the findings should be replicated in other cohorts.https://bmjopengastro.bmj.com/content/11/1/e001340.full
spellingShingle Tine Jess
Nynne Nyboe Andersen
Gry Poulsen
Signe Wildt
Lars Kristian Munck
Aske Thorn Iversen
Christian Borup
Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
BMJ Open Gastroenterology
title Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
title_full Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
title_fullStr Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
title_full_unstemmed Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
title_short Risk of cancer in patients with bile acid diarrhoea: a Danish nationwide matched cohort study
title_sort risk of cancer in patients with bile acid diarrhoea a danish nationwide matched cohort study
url https://bmjopengastro.bmj.com/content/11/1/e001340.full
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