Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank

Background and objective Obesity and asthma impose a heavy health and economic burden on millions of people around the world. The complex interaction between genetic traits and phenotypes caused the mechanism between obesity and asthma is still vague. This study investigates the relationship among o...

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Main Authors: Ta-Chien Chan, Chia-Wei Chen, Jing-Shiang Hwang, Ying-Jhen Huang, Yi-Chi Chu, Hsin-Chou Yang, Hung-Ling Huang, Chun-Houh Chen
Format: Article
Language:English
Published: BMJ Publishing Group 2022-02-01
Series:BMJ Open Respiratory Research
Online Access:https://bmjopenrespres.bmj.com/content/9/1/e001355.full
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author Ta-Chien Chan
Chia-Wei Chen
Jing-Shiang Hwang
Ying-Jhen Huang
Yi-Chi Chu
Hsin-Chou Yang
Hung-Ling Huang
Chun-Houh Chen
author_facet Ta-Chien Chan
Chia-Wei Chen
Jing-Shiang Hwang
Ying-Jhen Huang
Yi-Chi Chu
Hsin-Chou Yang
Hung-Ling Huang
Chun-Houh Chen
author_sort Ta-Chien Chan
collection DOAJ
description Background and objective Obesity and asthma impose a heavy health and economic burden on millions of people around the world. The complex interaction between genetic traits and phenotypes caused the mechanism between obesity and asthma is still vague. This study investigates the relationship among obesity-related polygenic risk score (PRS), obesity phenotypes and the risk of having asthma.Methods This is a matched case–control study, with 4 controls (8288 non-asthmatic) for each case (2072 asthmatic). Data were obtained from the 2008–2015 Taiwan Biobank Database and linked to the 2000–2016 National Health Insurance Research Database. All participants were ≥30 years old with no history of cancer and had a complete questionnaire, as well as physical examination, genome-wide single nucleotide polymorphisms and clinical diagnosis data. Environmental exposure, PM2.5, was also considered. Multivariate adjusted ORs and 95% CIs were calculated using conditional logistic regression stratified by age and sex. Mediation analysis was also assessed, using a generalised linear model.Results We found that the obese phenotype was associated with significantly increased odds of asthma by approximately 26%. Four obesity-related PRS, including body mass index (OR=1.07 (1.01–1.13)), waist circumference (OR=1.10 (1.04–1.17)), central obesity as defined by waist-to-height ratio (OR=1.09 (1.03–1.15)) and general–central obesity (OR=1.06 (1.00–1.12)), were associated with increased odds of asthma. Additional independent risk factors for asthma included lower educational level, family history of asthma, certain chronic diseases and increased PM2.5 exposure. Obesity-related PRS is an indirect risk factor for asthma, the link being fully mediated by the trait of obesity.Conclusions Obese phenotypes and obesity-related PRS are independent risk factors for having asthma in adults in the Taiwan Biobank. Overall, genetic risk for obesity increases the risk of asthma by affecting the obese phenotype.
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spelling doaj.art-ec5cc92c24b846e69a0803b991c56bac2023-07-22T06:00:07ZengBMJ Publishing GroupBMJ Open Respiratory Research2052-44392022-02-019110.1136/bmjresp-2022-001355Relationship among genetic variants, obesity traits and asthma in the Taiwan BiobankTa-Chien Chan0Chia-Wei Chen1Jing-Shiang Hwang2Ying-Jhen Huang3Yi-Chi Chu4Hsin-Chou Yang5Hung-Ling Huang6Chun-Houh Chen7Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, TaiwanGraduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan2 Institute of Statistical Science, Academia Sinica, Taipei, TaiwanResearch Center for Humanities and Social Sciences, Academia Sinica, Taipei, TaiwanResearch Center for Humanities and Social Sciences, Academia Sinica, Taipei City, TaiwanInstitute of Statistical Science, Academia Sinica, Taipei City, TaiwanDepartment of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung City, TaiwanInstitute of Statistical Science, Academia Sinica, Taipei City, TaiwanBackground and objective Obesity and asthma impose a heavy health and economic burden on millions of people around the world. The complex interaction between genetic traits and phenotypes caused the mechanism between obesity and asthma is still vague. This study investigates the relationship among obesity-related polygenic risk score (PRS), obesity phenotypes and the risk of having asthma.Methods This is a matched case–control study, with 4 controls (8288 non-asthmatic) for each case (2072 asthmatic). Data were obtained from the 2008–2015 Taiwan Biobank Database and linked to the 2000–2016 National Health Insurance Research Database. All participants were ≥30 years old with no history of cancer and had a complete questionnaire, as well as physical examination, genome-wide single nucleotide polymorphisms and clinical diagnosis data. Environmental exposure, PM2.5, was also considered. Multivariate adjusted ORs and 95% CIs were calculated using conditional logistic regression stratified by age and sex. Mediation analysis was also assessed, using a generalised linear model.Results We found that the obese phenotype was associated with significantly increased odds of asthma by approximately 26%. Four obesity-related PRS, including body mass index (OR=1.07 (1.01–1.13)), waist circumference (OR=1.10 (1.04–1.17)), central obesity as defined by waist-to-height ratio (OR=1.09 (1.03–1.15)) and general–central obesity (OR=1.06 (1.00–1.12)), were associated with increased odds of asthma. Additional independent risk factors for asthma included lower educational level, family history of asthma, certain chronic diseases and increased PM2.5 exposure. Obesity-related PRS is an indirect risk factor for asthma, the link being fully mediated by the trait of obesity.Conclusions Obese phenotypes and obesity-related PRS are independent risk factors for having asthma in adults in the Taiwan Biobank. Overall, genetic risk for obesity increases the risk of asthma by affecting the obese phenotype.https://bmjopenrespres.bmj.com/content/9/1/e001355.full
spellingShingle Ta-Chien Chan
Chia-Wei Chen
Jing-Shiang Hwang
Ying-Jhen Huang
Yi-Chi Chu
Hsin-Chou Yang
Hung-Ling Huang
Chun-Houh Chen
Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
BMJ Open Respiratory Research
title Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
title_full Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
title_fullStr Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
title_full_unstemmed Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
title_short Relationship among genetic variants, obesity traits and asthma in the Taiwan Biobank
title_sort relationship among genetic variants obesity traits and asthma in the taiwan biobank
url https://bmjopenrespres.bmj.com/content/9/1/e001355.full
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