Relationship Between Genetic Prediction of Diabetes and Coronary Atherosclerosis: A Two-Sample Bidirectional Mendelian Randomization Study

Journal: Journal of Clinical Medicine Research DOI: 10.32629/jcmr.v4i4.1422

Xiaoying Guo1, Biaoliang Wu2

1. Department of Endocrinology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China; Graduate School of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China
2. Department of Endocrinology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi, China

Abstract

Background: To explore the relationship between diabetes and coronary atherosclerosis at the genetic level by using two-sample Mendelian randomization (MR). Methods: Diabetes and coronary atherosclerosis are the exposure factors and outcomes respectively. The study employed the inverse-variance weighted method (IVW), MR-Egger regression, weighted median method (WM), simple mode, and weighted mode for bidirectional Mendelian randomization analysis, using the odds ratio (OR) to assess the causal relationship between diabetes and coronary atherosclerosis. Results: MR heterogeneity demonstrated heterogeneity in single nucleotide polymorphisms (SNPs) for each nucleotide (all P values < 0.001). Therefore, the IVW random effects model was selected. The results showed that at the gene level, there was a correlation between an increased risk of diabetes and coronary atherosclerosis (OR=1.103). Additionally, there was a correlation between an increased risk of coronary atherosclerosis and diabetes (OR=1.108). No horizontal pleiotropy of instrumental variables was found (P=0.419, 0.808). The MR analysis results remained robust after sequentially excluding SNPs. Conclusion: Diabetes and coronary atherosclerosis are mutually predisposing risk factors for each other at the gene level in the European population.

Keywords

diabetes, coronary atherosclerosis, mendelian randomization, causal inference

Funding

Key Project of the Guangxi Natural Science Foundation (2023GXNSFDA026008); 2021 Research Project of the Traditional Chinese Medicine Bureau of the Autonomous Region (20210234)

References

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Copyright © 2023 Xiaoying Guo, Biaoliang Wu

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