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

TitleGenome-Wide Interaction Analysis with DASH Diet Score Identified Novel Loci for Systolic Blood Pressure.
Publication TypeJournal Article
Year of Publication2023
AuthorsGuirette, M, Lan, J, McKeown, N, Brown, MR, Chen, H, de Vries, PS, Kim, H, Rebholz, CM, Morrison, AC, Bartz, TM, Fretts, AM, Guo, X, Lemaitre, RN, Liu, C-T, Noordam, R, de Mutsert, R, Rosendaal, FR, Wang, CA, Beilin, L, Mori, TA, Oddy, WH, Pennell, CE, Chai, JFang, Whitton, C, van Dam, RM, Liu, J, Tai, SE, Sim, X, Neuhouser, ML, Kooperberg, C, Tinker, L, Franceschini, N, Huan, T, Winkler, TW, Bentley, AR, W Gauderman, J, Heerkens, L, Tanaka, T, van Rooij, J, Munroe, PB, Warren, HR, Voortman, T, Chen, H, Rao, DC, Levy, D, Ma, J
JournalmedRxiv
Date Published2023 Nov 11
Abstract<p><b>OBJECTIVE: </b>We examined interactions between genotype and a Dietary Approaches to Stop Hypertension (DASH) diet score in relation to systolic blood pressure (SBP).</p><p><b>METHODS: </b>We analyzed up to 9,420,585 biallelic imputed single nucleotide polymorphisms (SNPs) in up to 127,282 individuals of six population groups (91% of European population) from the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium (CHARGE; n=35,660) and UK Biobank (n=91,622) and performed European population-specific and cross-population meta-analyses.</p><p><b>RESULTS: </b>We identified three loci in European-specific analyses and an additional four loci in cross-population analyses at P for interaction < 5e-8. We observed a consistent interaction between rs117878928 at 15q25.1 (minor allele frequency = 0.03) and the DASH diet score (P for interaction = 4e-8; P for heterogeneity = 0.35) in European population, where the interaction effect size was 0.42±0.09 mm Hg (P for interaction = 9.4e-7) and 0.20±0.06 mm Hg (P for interaction = 0.001) in CHARGE and the UK Biobank, respectively. The 1 Mb region surrounding rs117878928 was enriched with -expression quantitative trait loci (eQTL) variants (P = 4e-273) and -DNA methylation quantitative trait loci (mQTL) variants (P = 1e-300). While the closest gene for rs117878928 is , the highest narrow sense heritability accounted by SNPs potentially interacting with the DASH diet score in this locus was for gene at 15q25.1.</p><p><b>CONCLUSION: </b>We demonstrated gene-DASH diet score interaction effects on SBP in several loci. Studies with larger diverse populations are needed to validate our findings.</p>
DOI10.1101/2023.11.10.23298402
Alternate JournalmedRxiv
PubMed ID37986948
PubMed Central IDPMC10659476
ePub date: 
23/11