Author:
Lian Xingji,Wang Yiqin,Wang Shuyi,Peng Xiaohui,Wang Yanhui,Huang Yuyu,Chen Wei
Abstract
Abstract
Background
This study aimed to investigate a causal relationship between IBD and multiple kidney diseases using two-sample Mendelian randomization (MR) analyses.
Methods
We selected a group of single nucleotide polymorphisms (SNPs) specific to IBD as instrumental variables from a published genome-wide association study (GWAS) with 86,640 individuals of European ancestry. Summary statistics for multiple kidney diseases were obtained from the publicly available GWAS. Genetic data from one GWAS involving 210 extensive T-cell traits was used to estimate the mediating effect on specific kidney disease. Inverse-variance weighted method were used to evaluate the MR estimates for primary analysis.
Results
Genetic predisposition to IBD was associated with higher risk of IgA nephropathy (IgAN) (OR, 1.78; 95% CI, 1.45–2.19), but not membranous nephropathy, diabetic nephropathy, glomerulonephritis, nephrotic syndrome, chronic kidney disease, and urolithiasis. CD4 expression on CD4 + T cell had a significant genetic association with the risk of IgAN (OR, 2.72; 95% CI, 1.10–6.72). Additionally, consistent results were also observed when IBD was subclassified as ulcerative colitis (OR, 1.38; 95% CI, 1.10–1.71) and Crohn’s disease (OR, 1.37; 95% CI, 1.12–1.68). MR-PRESSO and the MR-Egger intercept did not identify pleiotropic SNPs.
Conclusions
This study provides genetic evidence supporting a positive casual association between IBD, including its subclassification as ulcerative colitis and Crohn’s disease, and the risk of IgAN. However, no casual association was found between IBD and other types of kidney diseases. Further exploration of IBD interventions as potential preventive measures for IgAN is warranted.
Funder
Guangzhou Key Discipline of Medicine
National Natural Science Foundation of China
Key Laboratory of National Health Commission, and Key Laboratory of Nephrology, Guangdong Province, Guangzhou, China
Publisher
Springer Science and Business Media LLC
Subject
Genetics (clinical),Genetics
Cited by
1 articles.
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