TY - JOUR T1 - Gene-age interactions in blood pressure regulation: a large-scale investigation with the CHARGE, Global BPgen, and ICBP Consortia. JF - Am J Hum Genet Y1 - 2014 A1 - Simino, Jeannette A1 - Shi, Gang A1 - Bis, Joshua C A1 - Chasman, Daniel I A1 - Ehret, Georg B A1 - Gu, Xiangjun A1 - Guo, Xiuqing A1 - Hwang, Shih-Jen A1 - Sijbrands, Eric A1 - Smith, Albert V A1 - Verwoert, Germaine C A1 - Bragg-Gresham, Jennifer L A1 - Cadby, Gemma A1 - Chen, Peng A1 - Cheng, Ching-Yu A1 - Corre, Tanguy A1 - de Boer, Rudolf A A1 - Goel, Anuj A1 - Johnson, Toby A1 - Khor, Chiea-Chuen A1 - Lluís-Ganella, Carla A1 - Luan, Jian'an A1 - Lyytikäinen, Leo-Pekka A1 - Nolte, Ilja M A1 - Sim, Xueling A1 - Sõber, Siim A1 - van der Most, Peter J A1 - Verweij, Niek A1 - Zhao, Jing Hua A1 - Amin, Najaf A1 - Boerwinkle, Eric A1 - Bouchard, Claude A1 - Dehghan, Abbas A1 - Eiriksdottir, Gudny A1 - Elosua, Roberto A1 - Franco, Oscar H A1 - Gieger, Christian A1 - Harris, Tamara B A1 - Hercberg, Serge A1 - Hofman, Albert A1 - James, Alan L A1 - Johnson, Andrew D A1 - Kähönen, Mika A1 - Khaw, Kay-Tee A1 - Kutalik, Zoltán A1 - Larson, Martin G A1 - Launer, Lenore J A1 - Li, Guo A1 - Liu, Jianjun A1 - Liu, Kiang A1 - Morrison, Alanna C A1 - Navis, Gerjan A1 - Ong, Rick Twee-Hee A1 - Papanicolau, George J A1 - Penninx, Brenda W A1 - Psaty, Bruce M A1 - Raffel, Leslie J A1 - Raitakari, Olli T A1 - Rice, Kenneth A1 - Rivadeneira, Fernando A1 - Rose, Lynda M A1 - Sanna, Serena A1 - Scott, Robert A A1 - Siscovick, David S A1 - Stolk, Ronald P A1 - Uitterlinden, André G A1 - Vaidya, Dhananjay A1 - van der Klauw, Melanie M A1 - Vasan, Ramachandran S A1 - Vithana, Eranga Nishanthie A1 - Völker, Uwe A1 - Völzke, Henry A1 - Watkins, Hugh A1 - Young, Terri L A1 - Aung, Tin A1 - Bochud, Murielle A1 - Farrall, Martin A1 - Hartman, Catharina A A1 - Laan, Maris A1 - Lakatta, Edward G A1 - Lehtimäki, Terho A1 - Loos, Ruth J F A1 - Lucas, Gavin A1 - Meneton, Pierre A1 - Palmer, Lyle J A1 - Rettig, Rainer A1 - Snieder, Harold A1 - Tai, E Shyong A1 - Teo, Yik-Ying A1 - van der Harst, Pim A1 - Wareham, Nicholas J A1 - Wijmenga, Cisca A1 - Wong, Tien Yin A1 - Fornage, Myriam A1 - Gudnason, Vilmundur A1 - Levy, Daniel A1 - Palmas, Walter A1 - Ridker, Paul M A1 - Rotter, Jerome I A1 - van Duijn, Cornelia M A1 - Witteman, Jacqueline C M A1 - Chakravarti, Aravinda A1 - Rao, Dabeeru C KW - Adolescent KW - Adult KW - Age Factors KW - Aged KW - Blood Pressure KW - Cohort Studies KW - Humans KW - Middle Aged KW - Young Adult AB -
Although age-dependent effects on blood pressure (BP) have been reported, they have not been systematically investigated in large-scale genome-wide association studies (GWASs). We leveraged the infrastructure of three well-established consortia (CHARGE, GBPgen, and ICBP) and a nonstandard approach (age stratification and metaregression) to conduct a genome-wide search of common variants with age-dependent effects on systolic (SBP), diastolic (DBP), mean arterial (MAP), and pulse (PP) pressure. In a two-staged design using 99,241 individuals of European ancestry, we identified 20 genome-wide significant (p ≤ 5 × 10(-8)) loci by using joint tests of the SNP main effect and SNP-age interaction. Nine of the significant loci demonstrated nominal evidence of age-dependent effects on BP by tests of the interactions alone. Index SNPs in the EHBP1L1 (DBP and MAP), CASZ1 (SBP and MAP), and GOSR2 (PP) loci exhibited the largest age interactions, with opposite directions of effect in the young versus the old. The changes in the genetic effects over time were small but nonnegligible (up to 1.58 mm Hg over 60 years). The EHBP1L1 locus was discovered through gene-age interactions only in whites but had DBP main effects replicated (p = 8.3 × 10(-4)) in 8,682 Asians from Singapore, indicating potential interethnic heterogeneity. A secondary analysis revealed 22 loci with evidence of age-specific effects (e.g., only in 20 to 29-year-olds). Age can be used to select samples with larger genetic effect sizes and more homogenous phenotypes, which may increase statistical power. Age-dependent effects identified through novel statistical approaches can provide insight into the biology and temporal regulation underlying BP associations.
VL - 95 IS - 1 U1 - http://www.ncbi.nlm.nih.gov/pubmed/24954895?dopt=Abstract ER -