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Genetically predicted causal association between type 2 diabetes and heart failure: A two-sample Mendelian
Xiaoyu Yang1,2,3,4, Binlu Wang1,2,3,4, Qin Wan1,2,3,4
1School of Clinical Medicine, Southwest Medical University, Luzhou, China.
Medicine
|May 4, 2026
Summary
Type 2 diabetes mellitus (T2DM) significantly increases heart failure risk by 7%. Mendelian randomization confirms T2DM as an independent risk factor, urging enhanced screening for diabetic patients.
Area of Science:
- Cardiovascular Research
- Endocrinology
- Genetic Epidemiology
Background:
- The link between type 2 diabetes mellitus (T2DM) and heart failure is well-established but causality is debated.
- Understanding the causal relationship is crucial for effective prevention and management strategies.
Purpose of the Study:
- To investigate the causal effect of T2DM on heart failure risk using a robust genetic approach.
- To provide evidence for T2DM as an independent risk factor for heart failure.
Main Methods:
- Employed a two-sample Mendelian randomization (MR) analysis.
- Utilized large-scale genome-wide association study (GWAS) summary statistics for T2DM and heart failure.
- Analyzed data from 655,666 individuals for T2DM and 977,323 for heart failure.
Main Results:
- A significant causal relationship was identified between T2DM and heart failure.
- Individuals with T2DM showed a 7% increased odds of developing heart failure (OR=1.07, P=1.07×10-6).
- Mendelian randomization analysis supports T2DM as an independent risk factor.
Conclusions:
- T2DM is a significant independent risk factor for heart failure.
- MR analysis is a valuable tool for identifying heart failure risk in diabetic populations.
- Enhanced screening and preventive measures for heart failure in T2DM patients are recommended for improved outcomes.
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