Genome-Wide Interaction Analysis With DASH Diet Score Identified Novel Loci for Systolic Blood Pressure

Authors

Document Type

Journal Article

Publication Date

1-16-2024

Journal

Hypertension (Dallas, Tex. : 1979)

DOI

10.1161/HYPERTENSIONAHA.123.22334

Keywords

UK Biobank; blood pressure; cardiovascular diseases; gene-environment interaction; hypertension

Abstract

BACKGROUND: The Dietary Approaches to Stop Hypertension (DASH) diet score lowers blood pressure (BP). We examined interactions between genotype and the DASH diet score in relation to systolic BP. METHODS: We analyzed up to 9 420 585 single nucleotide polymorphisms in up to 127 282 individuals of 6 population groups (91% of European population) from the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium (n=35 660) and UK Biobank (n=91 622) and performed European population-specific and cross-population meta-analyses. RESULTS: We identified 3 loci in European-specific analyses and an additional 4 loci in cross-population analyses at <5e-8. We observed a consistent interaction between rs117878928 at 15q25.1 (minor allele frequency, 0.03) and the DASH diet score (=4e-8; for heterogeneity, 0.35) in European population, where the interaction effect size was 0.42±0.09 mm Hg (=9.4e-7) and 0.20±0.06 mm Hg (=0.001) in Cohorts for Heart and Aging Research in Genomic Epidemiology and the UK Biobank, respectively. The 1 Mb region surrounding rs117878928 was enriched with -expression quantitative trait loci (eQTL) variants (=4e-273) and -DNA methylation quantitative trait loci variants (=1e-300). Although the closest gene for rs117878928 is , the highest narrow sense heritability accounted by single nucleotide polymorphisms potentially interacting with the DASH diet score in this locus was for gene at 15q25.1. CONCLUSIONS: We demonstrated gene-DASH diet score interaction effects on systolic BP in several loci. Studies with larger diverse populations are needed to validate our findings.

Department

Exercise and Nutrition Sciences

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