Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study

Background: Patients with type 1 diabetes mellitus have been at heightened risk for developing atrial fibrillation. We aimed to investigate whether this association is causal using Mendelian randomization. Methods: Using publicly available genome-wide association studies data, we selected single nuc...

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Main Authors: Yongkai Li, Shasha Liu, Yiming Dong, Jianzhong Yang, Yingping Tian
Format: Article
Language:English
Published: Elsevier 2025-04-01
Series:International Journal of Cardiology: Heart & Vasculature
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Online Access:http://www.sciencedirect.com/science/article/pii/S2352906725000466
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author Yongkai Li
Shasha Liu
Yiming Dong
Jianzhong Yang
Yingping Tian
author_facet Yongkai Li
Shasha Liu
Yiming Dong
Jianzhong Yang
Yingping Tian
author_sort Yongkai Li
collection DOAJ
description Background: Patients with type 1 diabetes mellitus have been at heightened risk for developing atrial fibrillation. We aimed to investigate whether this association is causal using Mendelian randomization. Methods: Using publicly available genome-wide association studies data, we selected single nucleotide polymorphisms significantly associated with type 1 diabetes mellitus as instrumental variables. We employed inverse variance-weighted, weighted median, MR-Egger regression, simple mode, and weighted mode methods within a two-sample Mendelian randomization framework to assess the causal relationship between type 1 diabetes mellitus and atrial fibrillation. We evaluated the pleiotropy and heterogeneity levels of the included genetic instruments using MR-PRESSO, MR-Egger intercept test, Cochran’s Q test, funnel plots, and leave-one-out plots. Results: Causal impact of type 1 diabetes mellitus on atrial fibrillation: Inverse variance weighted (odds ratio [OR] = 0.996, 95 % confidence interval [CI]: 0.985–1.007, P = 0.498). MR-Egger (OR = 1.000, 95 % CI: 0.985–1.016, P = 0.963). Weighted median (OR = 0.985, 95 % CI: 0.973–0.998, P = 0.022). Simple mode (OR = 1.007, 95 % CI: 0.974–1.040, P = 0.698). Weighted mode (OR = 0.995, 95 % CI: 0.984–1.005, P = 0.298). MR-Egger intercept test (P = 0.437). There was no evidence of pleiotropy among the genetic instrumental variables included in the analysis. Conclusions: In Mendelian randomization analysis, we did not find evidence of a causal relationship between genetically determined type 1 diabetes mellitus in European ancestry populations and atrial fibrillation.
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spelling doaj-art-d44dc24eee4e4bf9bc7c63efc94aa8b02025-08-20T02:47:37ZengElsevierInternational Journal of Cardiology: Heart & Vasculature2352-90672025-04-015710164310.1016/j.ijcha.2025.101643Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization studyYongkai Li0Shasha Liu1Yiming Dong2Jianzhong Yang3Yingping Tian4Emergency Department, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaEmergency Department, The Fourth Hospital of Shijiazhuang, Shijiazhuang, ChinaEmergency Department, The Fourth Hospital of Shijiazhuang, Shijiazhuang, ChinaEmergency Trauma Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China; Corresponding author at: Emergency Trauma Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.Emergency Department, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China; Corresponding author at: Emergency Department, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.Background: Patients with type 1 diabetes mellitus have been at heightened risk for developing atrial fibrillation. We aimed to investigate whether this association is causal using Mendelian randomization. Methods: Using publicly available genome-wide association studies data, we selected single nucleotide polymorphisms significantly associated with type 1 diabetes mellitus as instrumental variables. We employed inverse variance-weighted, weighted median, MR-Egger regression, simple mode, and weighted mode methods within a two-sample Mendelian randomization framework to assess the causal relationship between type 1 diabetes mellitus and atrial fibrillation. We evaluated the pleiotropy and heterogeneity levels of the included genetic instruments using MR-PRESSO, MR-Egger intercept test, Cochran’s Q test, funnel plots, and leave-one-out plots. Results: Causal impact of type 1 diabetes mellitus on atrial fibrillation: Inverse variance weighted (odds ratio [OR] = 0.996, 95 % confidence interval [CI]: 0.985–1.007, P = 0.498). MR-Egger (OR = 1.000, 95 % CI: 0.985–1.016, P = 0.963). Weighted median (OR = 0.985, 95 % CI: 0.973–0.998, P = 0.022). Simple mode (OR = 1.007, 95 % CI: 0.974–1.040, P = 0.698). Weighted mode (OR = 0.995, 95 % CI: 0.984–1.005, P = 0.298). MR-Egger intercept test (P = 0.437). There was no evidence of pleiotropy among the genetic instrumental variables included in the analysis. Conclusions: In Mendelian randomization analysis, we did not find evidence of a causal relationship between genetically determined type 1 diabetes mellitus in European ancestry populations and atrial fibrillation.http://www.sciencedirect.com/science/article/pii/S2352906725000466Type 1 diabetes mellitusAtrial fibrillationGenome-wide associationMendelian randomization
spellingShingle Yongkai Li
Shasha Liu
Yiming Dong
Jianzhong Yang
Yingping Tian
Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
International Journal of Cardiology: Heart & Vasculature
Type 1 diabetes mellitus
Atrial fibrillation
Genome-wide association
Mendelian randomization
title Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
title_full Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
title_fullStr Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
title_full_unstemmed Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
title_short Causal relationship between type I diabetes mellitus and atrial fibrillation: A Mendelian randomization study
title_sort causal relationship between type i diabetes mellitus and atrial fibrillation a mendelian randomization study
topic Type 1 diabetes mellitus
Atrial fibrillation
Genome-wide association
Mendelian randomization
url http://www.sciencedirect.com/science/article/pii/S2352906725000466
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AT jianzhongyang causalrelationshipbetweentypeidiabetesmellitusandatrialfibrillationamendelianrandomizationstudy
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