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Keller, M.F.* ; Reiner, A.P.* ; Okada, Y.* ; van Rooij, F.J.* ; Johnson, A.D.* ; Chen, M.H.* ; Smith, A.V.* ; Morris, A.P.* ; Tanaka, T.* ; Ferrucci, L.* ; Zonderman, A.B.* ; Lettre, G.* ; Harris, T.* ; Garcia, M.* ; Bandinelli, S.* ; Qayyum, R.* ; Yanek, L.R.* ; Becker, D.M.* ; Becker, L.C.* ; Kooperberg, C.* ; Keating, B.J.* ; Reis, J.* ; Tang, H.* ; Boerwinkle, E.* ; Kamatani, Y.* ; Matsuda, K.* ; Kamatani, N.* ; Nakamura, Y.* ; Kubo, M.* ; Liu, S.* ; Dehghan, A.* ; Felix, J.F.* ; Hofman, A.* ; Uitterlinden, A.G.* ; van Duijn, C.M.* ; Franco, O.H.* ; Longo, D.L.* ; Singleton, A.B.* ; Psaty, B.M.* ; Evans, M.K.* ; Cupples, L.A.* ; Rotter, J.I.* ; O'Donnell, C.J.* ; Takahashi, A.* ; Wilson, J.G.* ; Ganesh, S.K.* ; Nalls, M.A.* ; CHARGE Consortium (Gieger, C. ; Illig, T. ; Meisinger, C. ; Prokisch, H. ; Wichmann, H.-E.) ; COGENT Consortium (*) ; RIKEN Consortium (*)

Trans-ethnic meta-analysis of white blood cell phenotypes.

Hum. Mol. Genet. 23, 6944-6960 (2014)
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White blood cell (WBC) count is a common clinical measure used as a predictor of certain aspects of human health, including immunity and infection status. WBC count is also a complex trait that varies among individuals and ancestry groups. Differences in linkage disequilibrium structure and heterogeneity in allelic effects are expected to play a role in the associations observed between populations. Prior genome-wide association study (GWAS) meta-analyses have identified genomic loci associated with WBC and its subtypes, but much of the heritability of these phenotypes remains unexplained. Using GWAS summary statistics for over 50 000 individuals from three diverse populations (Japanese, African-American and European ancestry), a Bayesian model methodology was employed to account for heterogeneity between ancestry groups. This approach was used to perform a trans-ethnic meta-analysis of total WBC, neutrophil and monocyte counts. Ten previously known associations were replicated and six new loci were identified, including several regions harboring genes related to inflammation and immune cell function. Ninety-five percent credible interval regions were calculated to narrow the association signals and fine-map the putatively causal variants within loci. Finally, a conditional analysis was performed on the most significant SNPs identified by the trans-ethnic meta-analysis (MA), and nine secondary signals within loci previously associated with WBC or its subtypes were identified. This work illustrates the potential of trans-ethnic analysis and ascribes a critical role to multi-ethnic cohorts and consortia in exploring complex phenotypes with respect to variants that lie outside the European-biased GWAS pool.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2014
HGF-reported in Year 2015
ISSN (print) / ISBN 0964-6906
e-ISSN 1460-2083
Journal Human Molecular Genetics
Quellenangaben Volume: 23, Issue: 25, Pages: 6944-6960 Article Number: , Supplement: ,
Publisher Oxford University Press
Reviewing status Peer reviewed
Institute(s) Institute of Epidemiology (EPI)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Genetics and Epidemiology
PSP Element(s) G-504091-004
G-504000-006
G-504000-007
PubMed ID 25096241
DOI 10.1093/hmg/ddu401
Erfassungsdatum 2015-04-05
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