A Functional Genetic Variant (N521D) in Natriuretic Peptide Receptor 3 Is Associated with Diastolic Dysfunction: The Prevalence of Asymptomatic Ventricular Dysfunction Study
Key result
NPR3 rs2270915 G/G genotype is linked to ~94% higher odds of diastolic dysfunction.
- OR 1.94
- 95% CI 1.07-3.51
- P=0.03
- n=1,931
Why the study?
Whether the NPR3 rs2270915 SNP (N521D) is associated with alterations in natriuretic peptide levels and cardiac structure and function was unknown.
Is the NPR3 rs2270915 SNP associated with diastolic dysfunction and altered natriuretic peptide levels in the general community?
Population
1931 randomly selected residents of Olmsted County, Minnesota
Comparison
Homozygotes G/G vs wild type A/A plus heterozygotes A/G for NPR3 rs2270915 SNP
Design
Cross-sectional genetic association study with echocardiography
Authors
Discussion
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Member takes
Implication
NPR3 rs2270915 variant shows hypothesis-generating links to NPs and myocardial parameters; larger studies needed before clinical relevance.
Study Design
Type
Cross-Sectional (n=1,931)
Multicenter
No
Structured PICO
Is the NPR3 rs2270915 SNP associated with diastolic dysfunction and altered natriuretic peptide levels in the general community?
P
Population
1,931 community-dwelling adults aged 45 years or older, free of clinical heart failure, evaluated cross-sectionally for the association between a NPR3 genetic variant and diastolic dysfunction.
E
Exposure
Homozygotes G/G for the NPR3 rs2270915 SNP (N521D substitution)
C
Comparator
Wild type A/A plus heterozygotes A/G for the NPR3 rs2270915 SNP
O
Outcome
Diastolic dysfunction assessed by comprehensive echocardiography and circulating natriuretic peptide levelssurrogate
Main Result
Odds Ratio: 1.94 (95% CI 1.07–3.51)
Absolute Event Rate: 43% vs 28%
p-value: p=0.03
A functional genetic variant in NPR3 (rs2270915) is independently associated with diastolic dysfunction without affecting circulating natriuretic peptide levels.
Limitations
- Relatively homogenous population of European ancestry, requiring replication in other ethnicities
- Assessment of diastolic function was non-invasive (echocardiography) rather than invasive hemodynamic studies
Cite This Study
Pereira et al. (2014) conducted a cross-sectional in Diastolic dysfunction (n=1,931). NPR3 rs2270915 G/G genotype vs. NPR3 rs2270915 A/A or A/G genotypes was evaluated on Diastolic dysfunction (OR 1.94, 95% CI 1.07-3.51, p=0.03). The NPR3 rs2270915 G/G homozygous genotype was independently associated with a higher prevalence of diastolic dysfunction compared to A/A and A/G genotypes (OR 1.94).