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Concordance of genetic determinants of acute coronary artery disease between European and Chinese populations
Ahmed Edris1, Kuang Lin1, Sofia Massa1
1Clinical Trial Service Unit, Nuffield Department of Population Health, University of Oxford, Oxford, OX37LF, UK.
Insights
Genetic associations for coronary artery disease (CAD) in Europeans show moderate concordance in Chinese populations. These genetic determinants for CAD are specific and show weak links to other cardiovascular diseases like stroke.
Area of Science:
- Genetics
- Cardiovascular Disease Epidemiology
- Population Health
Background:
- Genetic associations for acute coronary artery disease (CAD) discovered in European populations may not fully translate to other ethnicities.
- Understanding genetic concordance is crucial for global cardiovascular disease prevention strategies.
Purpose of the Study:
- To examine the concordance of single nucleotide polymorphism (SNP) associations for acute CAD identified in Europeans with acute CAD, chronic ischaemic heart disease (IHD), or stroke in Chinese adults.
- To assess the transferability of European-derived CAD genetic risk scores to a Chinese cohort.
Main Methods:
- A nested case-control study within the China Kadoorie Biobank (CKB) analyzed 224 SNPs associated with acute CAD in Europeans.
- Associations were compared between European-derived SNPs and acute CAD in Chinese individuals.
- A genetic score (GS-CAD) was developed and its associations with chronic IHD, heart failure, stroke, cardiovascular disease (CVD) risk factors, and plasma proteomics were evaluated in the CKB cohort.
Main Results:
- A moderate correlation (r=0.53) was observed between European-derived CAD SNP associations and acute CAD in Chinese individuals, with only 25 SNPs showing significant replication.
- The GS-CAD demonstrated stronger associations with acute CAD compared to chronic IHD, heart failure, or stroke.
- Higher GS-CAD levels were significantly associated with LDL-cholesterol and moderately with systolic blood pressure, but showed weak associations with body mass index and no association with proteomics.
Conclusions:
- There is moderate concordance of genetic determinants for acute CAD between European and Chinese populations.
- These genetic associations appear specific to CAD and exhibit only weak links to chronic IHD, heart failure, or ischaemic stroke.
- Findings suggest potential for targeted genetic risk assessment in diverse populations, with caveats regarding specificity.
Aims:
This study examined the concordance of associations of single nucleotide polymorphisms (SNPs) for acute coronary artery disease (CAD) discovered in Europeans with acute CAD, chronic ischaemic heart disease (IHD) or stroke in Chinese adults.
Methods:
In a nested case-control study of acute CAD (4,748 cases/66,227 controls) in China Kadoorie Biobank (CKB), we compared associations of 224 SNPs for acute CAD discovered in Europeans in CARDIOGRAMplusC4D (CC4D) with acute CAD in Chinese. We compared associations of a genetic score (GS-CAD) for 224 SNPs for acute CAD with chronic IHD (n = 9,000), heart failure (n = 1,229), stroke (n = 10,208), CVD risk factors (n = 70,364), and plasma proteomics (n = 3,904) in CKB.
Results:
The strength of associations of 224 CAD SNPs discovered in Europeans was moderately correlated with those for acute CAD in Chinese (r = 0.53), but significant associations were only replicated (P < 0.05) for 25 SNPs. The strength of associations with acute CAD for a 1 SD higher GS for acute CAD in Chinese was 3-fold greater than for chronic IHD or heart failure (1.22 [1.18-1.26] vs. 1.07 [1.05-1.10] vs. 1.06 [1.00-1.12], respectively) and 7-fold greater than for stroke (1.03; 1.01-1.05). Higher levels of GS-CAD were strongly associated with low-density lipoprotein cholesterol, moderately with systolic blood pressure and weakly with body mass index, but not with proteomics.
Conclusions:
The findings demonstrate a moderate concordance of genetic determinants for acute CAD between Europeans and Chinese that were specific for CAD and only weakly associated with chronic IHD, heart failure, or ischaemic stroke.
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