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Li C, Chen Y, Chen Y, Ying Z, Hu Y, Kuang Y, Yang H, Song H, Zeng X. The Causal Association of Irritable Bowel Syndrome with Multiple Disease Outcomes: A Phenome-Wide Mendelian Randomization Study. J Clin Med 2023; 12:jcm12031106. [PMID: 36769754 PMCID: PMC9918111 DOI: 10.3390/jcm12031106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/20/2023] [Accepted: 01/22/2023] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND This study aimed to identify novel associations between irritable bowel syndrome (IBS) and a broad range of outcomes. METHODS In total, 346,352 white participants in the U.K. Biobank were randomly divided into two halves, in which a genome-wide association study (GWAS) of IBS and a polygenic risk score (PRS) analysis of IBS using GWAS summary statistics were conducted, respectively. A phenome-wide association study (PheWAS) based on the PRS of IBS was performed to identify disease outcomes associated with IBS. Then, the causalities of these associations were tested by both one-sample (individual-level data in U.K. Biobank) and two-sample (publicly available summary statistics) Mendelian randomization (MR). Sex-stratified PheWAS-MR analyses were performed in male and female, separately. RESULTS Our PheWAS identified five diseases associated with genetically predicted IBS. Conventional MR confirmed these causal associations between IBS and depression (OR: 1.07, 95%CI: 1.01-1.14, p = 0.02), diverticular diseases of the intestine (OR: 1.13, 95%CI: 1.08-1.19, p = 3.00 × 10-6), gastro-esophageal reflux disease (OR: 1.09, 95%CI: 1.05-1.13, p = 3.72 × 10-5), dyspepsia (OR: 1.21, 95%CI: 1.13-1.30, p = 9.28 × 10-8), and diaphragmatic hernia (OR: 1.10, 95%CI: 1.05-1.15, p = 2.75 × 10-5). The causality of these associations was observed in female only, but not men. CONCLUSIONS Increased risks of IBS is found to cause a series of disease outcomes. Our findings support further investigation on the clinical relevance of increased IBS risks with mental and digestive disorders.
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Affiliation(s)
- Chunyang Li
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Yilong Chen
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Yi Chen
- Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
| | - Zhiye Ying
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Yao Hu
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Yalan Kuang
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Huazhen Yang
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Huan Song
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
| | - Xiaoxi Zeng
- Biomedical Big Data Center, West China Hospital, West China School of Medicine, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China
- Med-X Center for Informatics, Sichuan University, 17 Ren Min Nan Road 3rd Section, Chengdu 610041, China
- Correspondence: ; Tel.: +86-28-85422819
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