@article {6618, title = {Sequence analysis of six blood pressure candidate regions in 4,178 individuals: the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) targeted sequencing study.}, journal = {PLoS One}, volume = {9}, year = {2014}, month = {2014}, pages = {e109155}, abstract = {

BACKGROUND: Genome-wide association studies (GWAS) identified multiple loci for blood pressure (BP) and hypertension. Six genes--ATP2B1, CACNB2, CYP17A1, JAG1, PLEKHA7, and SH2B3--were evaluated for sequence variation with large effects on systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse pressure (PP), and mean arterial pressure (MAP).

METHODS AND RESULTS: Targeted genomic sequence was determined in 4,178 European ancestry participants from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium. Common variants (>=50 minor allele copies) were evaluated individually and rare variants (minor allele frequency, MAF<=1\%) were aggregated by locus. 464 common variants were identified across the 6 genes. An upstream CYP17A1 variant, rs11191416 (MAF = 0.09), was the most significant association for SBP (P = 0.0005); however the association was attenuated (P = 0.0469) after conditioning on the GWAS index single nucleotide polymorphism (SNP). A PLEKHA7 intronic variant was the strongest DBP association (rs12806040, MAF = 0.007, P = 0.0006) and was not in LD (r{\texttwosuperior} = 0.01) with the GWAS SNP. A CACNB2 intronic SNP, rs1571787, was the most significant association with PP (MAF = 0.27, P = 0.0003), but was not independent from the GWAS SNP (r{\texttwosuperior} = 0.34). Three variants (rs6163 and rs743572 in the CYP17A1 region and rs112467382 in PLEKHA7) were associated with BP traits (P<0.001). Rare variation, aggregately assessed in the 6 regions, was not significantly associated with BP measures.

CONCLUSION: Six targeted gene regions, previously identified by GWAS, did not harbor novel variation with large effects on BP in this sample.

}, keywords = {Aging, Blood Pressure, Cohort Studies, Heart, Humans, Sequence Analysis}, issn = {1932-6203}, doi = {10.1371/journal.pone.0109155}, author = {Morrison, Alanna C and Bis, Joshua C and Hwang, Shih-Jen and Ehret, Georg B and Lumley, Thomas and Rice, Kenneth and Muzny, Donna and Gibbs, Richard A and Boerwinkle, Eric and Psaty, Bruce M and Chakravarti, Aravinda and Levy, Daniel} }