Key result
The CC and CT genotypes of the ACE gene rs4309 were independently associated with a higher likelihood of hypertension compared to the TT genotype (OR 1.25) in older Japanese adults.
Why the study?
The study was conducted to investigate the association between single nucleotide polymorphisms in the ACE gene and hypertension in elderly Japanese individuals.
Is the ACE gene SNP rs4309 CC/CT genotype associated with a higher likelihood of hypertension compared to the TT genotype in older Japanese adults?
Cross-Sectional (n=1,766)
No
Is the ACE gene SNP rs4309 CC/CT genotype associated with a higher likelihood of hypertension compared to the TT genotype in older Japanese adults?
Effect estimate: OR 1.25 (95% CI 1.001-1.548)
Absolute Event Rate: 71.5% vs 66.4%
p-value: p=0.025
The ACE gene rs4309 CC/CT genotype is associated with an increased risk of hypertension in older Japanese adults, supporting a genetic predisposition to the condition.
Should not yet inform hypertension management in older Japanese adults; leaves open causal and predictive utility of rs4309.
Aim We aimed to investigate the association between single nucleotide polymorphisms (SNPs) in the angiotensin-converting enzyme (ACE) gene and hypertension in elderly Japanese individuals. Methods This cross-sectional validation study was nested within the Nagasaki Islands Study (NaIS), involving 1,766 community-dwelling participants aged 65 years and older. Height and weight were measured. Body mass index (BMI) was calculated from height and weight, and blood pressure was measured by trained staff. Antihypertensive medication use and lifestyle factors, including alcohol consumption, smoking habits, and exercise, were assessed by interviews. The SNP (rs4309) was genotyped using fluorescent hydrolysis probes from peripheral blood mononuclear cells. Hypertension was defined as using antihypertensive medication or a systolic blood pressure of ≥140 mmHg and/or a diastolic blood pressure of ≥90 mmHg in those not on medication. Logistic regression analysis was used to calculate adjusted odds ratios (ORs) for hypertension, adjusting for potential confounders. Results Hypertension prevalence was higher in the CC/CT genotype group compared to the TT group (71.5% vs 66.4%, p=0.025). Logistic regression showed that the CC/CT genotype was independently associated with a higher likelihood of hypertension than the TT genotype (OR=1.25, 95% confidence interval (CI) 1.001-1.548) after adjusting for age, BMI, gender, alcohol consumption, smoking, and exercise. Conclusion The CC and CT genotypes of the ACE gene were independently associated with hypertension, regardless of age, BMI, gender, and lifestyle factors. These findings support a genetically informed approach to hypertension prevention.
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Koto et al. (2025) conducted a cross-sectional in Hypertension (n=1,766). ACE gene rs4309 CC/CT genotype vs. ACE gene rs4309 TT genotype was evaluated on Hypertension (OR 1.25, 95% CI 1.001-1.548, p=0.025). The CC and CT genotypes of the ACE gene rs4309 were independently associated with a higher likelihood of hypertension compared to the TT genotype (OR 1.25) in older Japanese adults.
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