No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study

Background: Although previous studies found that inflammatory bowel disease (IBD) and diverticular disease (DD) usually co-exist clinically, studies examining the relationship are spare.Aim: Our study aspires to investigate the causal correlation between the IBD [including ulcerative colitis (UC) an...

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Main Authors: Ailikamu Aierken, Falide Atabieke, Munire Aierken, Jian Li, Yu Xia, Yierzhati Aizezi, Shui-Xue Li
Format: Article
Language:English
Published: Frontiers Media S.A. 2024-02-01
Series:Frontiers in Genetics
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fgene.2024.1334473/full
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author Ailikamu Aierken
Falide Atabieke
Munire Aierken
Jian Li
Yu Xia
Yierzhati Aizezi
Shui-Xue Li
author_facet Ailikamu Aierken
Falide Atabieke
Munire Aierken
Jian Li
Yu Xia
Yierzhati Aizezi
Shui-Xue Li
author_sort Ailikamu Aierken
collection DOAJ
description Background: Although previous studies found that inflammatory bowel disease (IBD) and diverticular disease (DD) usually co-exist clinically, studies examining the relationship are spare.Aim: Our study aspires to investigate the causal correlation between the IBD [including ulcerative colitis (UC) and Crohn’s disease (CD)] and DD using the Mendelian randomization (MR) analysis.Methods: We conducted a two-sample bidirectional MR analysis using publicly available genome-wide association studies (GWAS) summary data. The single nucleotide polymorphism (SNP) data associated with DD and IBD were obtained from the Finnish Biobank and UK Biobank, respectively. Through secondary data analysis of all GWAS summary data, we systematically screened genetic instrumental variables. To address the impact of horizontal pleiotropy, several methods were employed, including the inverse variance-weighted method (IVW), maximum likelihood method, Egger regression method, weighted median method, and simple median method. These approaches aimed to detect and correct for the potential bias caused by horizontal pleiotropy.Results: Genetically predicted DD did not have a causal effect on IBD (OR 1.06, 95% CI 0.98–1.17, p = 0.15), and had no causal effect on UC (OR 1.10, 95% CI 0.94–1.20, p = 0.36) and CD (OR 1.03, 95% CI 0.92–1.16, p = 0.62) either. Furthermore, in the reverse MR analysis, we did not observe any significant causal effect of IBD on DD. Results of complementary methods showed consistent results with those of the IVW method.Conclusion: This study’s findings do not provide evidence for a causal relationship between IBD and DD, which contradicts the majority of observational studies.
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spelling doaj.art-3cbd7ef4ed04422999c86fb2cdee95782024-02-14T04:59:37ZengFrontiers Media S.A.Frontiers in Genetics1664-80212024-02-011510.3389/fgene.2024.13344731334473No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization studyAilikamu Aierken0Falide Atabieke1Munire Aierken2Jian Li3Yu Xia4Yierzhati Aizezi5Shui-Xue Li6Graduate School of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaThe Second Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, ChinaDepartment of Disinfection and Vector-Borne Pathogen Control, Urumqi City Center for Disease Prevention and Control, Urumqi, ChinaThe Second Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, ChinaThe Second Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, ChinaCenter of Critical Care Medicine, First Affiliated Hospital of Xinjiang Medical University, Urumqi, ChinaDepartment of General Surgery, Children’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi, ChinaBackground: Although previous studies found that inflammatory bowel disease (IBD) and diverticular disease (DD) usually co-exist clinically, studies examining the relationship are spare.Aim: Our study aspires to investigate the causal correlation between the IBD [including ulcerative colitis (UC) and Crohn’s disease (CD)] and DD using the Mendelian randomization (MR) analysis.Methods: We conducted a two-sample bidirectional MR analysis using publicly available genome-wide association studies (GWAS) summary data. The single nucleotide polymorphism (SNP) data associated with DD and IBD were obtained from the Finnish Biobank and UK Biobank, respectively. Through secondary data analysis of all GWAS summary data, we systematically screened genetic instrumental variables. To address the impact of horizontal pleiotropy, several methods were employed, including the inverse variance-weighted method (IVW), maximum likelihood method, Egger regression method, weighted median method, and simple median method. These approaches aimed to detect and correct for the potential bias caused by horizontal pleiotropy.Results: Genetically predicted DD did not have a causal effect on IBD (OR 1.06, 95% CI 0.98–1.17, p = 0.15), and had no causal effect on UC (OR 1.10, 95% CI 0.94–1.20, p = 0.36) and CD (OR 1.03, 95% CI 0.92–1.16, p = 0.62) either. Furthermore, in the reverse MR analysis, we did not observe any significant causal effect of IBD on DD. Results of complementary methods showed consistent results with those of the IVW method.Conclusion: This study’s findings do not provide evidence for a causal relationship between IBD and DD, which contradicts the majority of observational studies.https://www.frontiersin.org/articles/10.3389/fgene.2024.1334473/fullinflammatory bowel diseasediverticular diseaseMendelian randomizationcausalityCrohn’s diseaseulcerative colitis
spellingShingle Ailikamu Aierken
Falide Atabieke
Munire Aierken
Jian Li
Yu Xia
Yierzhati Aizezi
Shui-Xue Li
No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
Frontiers in Genetics
inflammatory bowel disease
diverticular disease
Mendelian randomization
causality
Crohn’s disease
ulcerative colitis
title No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
title_full No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
title_fullStr No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
title_full_unstemmed No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
title_short No bidirectional relationship between inflammatory bowel disease and diverticular disease: a genetic correlation and Mendelian randomization study
title_sort no bidirectional relationship between inflammatory bowel disease and diverticular disease a genetic correlation and mendelian randomization study
topic inflammatory bowel disease
diverticular disease
Mendelian randomization
causality
Crohn’s disease
ulcerative colitis
url https://www.frontiersin.org/articles/10.3389/fgene.2024.1334473/full
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