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Genome-wide Trans-ethnic Meta-analysis Identifies Seven Genetic Loci Influencing Erythrocyte Traits and a Role for RBPMS in Erythropoiesis.

van Rooij, Frank J A; Qayyum, Rehan; Smith, Albert V; Zhou, Yi; Trompet, Stella; Tanaka, Toshiko; Keller, Margaux F; Chang, Li-Ching; Schmidt, Helena; Yang, Min-Lee; Chen, Ming-Huei; Hayes, James; Johnson, Andrew D; Yanek, Lisa R; Mueller, Christian; Lange, Leslie; Floyd, James S; Ghanbari, Mohsen; Zonderman, Alan B; Jukema, J Wouter; Hofman, Albert; van Duijn, Cornelia M; Desch, Karl C; Saba, Yasaman; Ozel, Ayse B; Snively, Beverly M; Wu, Jer-Yuarn; Schmidt, Reinhold; Fornage, Myriam; Klein, Robert J; Fox, Caroline S; Matsuda, Koichi; Kamatani, Naoyuki; Wild, Philipp S; Stott, David J; Ford, Ian; Slagboom, P Eline; Yang, Jaden; Chu, Audrey Y; Lambert, Amy J; Uitterlinden, André G; Franco, Oscar H; Hofer, Edith; Ginsburg, David; Hu, Bella; Keating, Brendan; Schick, Ursula M; Brody, Jennifer A; Li, Jun Z; Chen, Zhao.
Am J Hum Genet; 100(1): 51-63, 2017 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-28017375
Genome-wide association studies (GWASs) have identified loci for erythrocyte traits in primarily European ancestry populations. We conducted GWAS meta-analyses of six erythrocyte traits in 71,638 individuals from European, East Asian, and African ancestries using a Bayesian approach to account for heterogeneity in allelic effects and variation in the structure of linkage disequilibrium between ethnicities. We identified seven loci for erythrocyte traits including a locus (RBPMS/GTF2E2) associated with mean corpuscular hemoglobin and mean corpuscular volume. Statistical fine-mapping at this locus pointed to RBPMS at this locus and excluded nearby GTF2E2. Using zebrafish morpholino to evaluate loss of function, we observed a strong in vivo erythropoietic effect for RBPMS but not for GTF2E2, supporting the statistical fine-mapping at this locus and demonstrating that RBPMS is a regulator of erythropoiesis. Our findings show the utility of trans-ethnic GWASs for discovery and characterization of genetic loci influencing hematologic traits.
Selo DaSilva