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

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Trompouki,  Eirini
Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Citation

van Rooij, F. J., Qayyum, R., Smith, A. V., Zhou, Y., Trompet, S., Tanaka, T., et al. (2017). Genome-wide Trans-ethnic meta-analysis Identifies Seven Genetic Loci Influencing Erythrocyte Traits and a Role for RBPMS in Erythropoiesis. The American Journal of Human Genetics, 100, 51-63. doi:10.1016/j.ajhg.2016.11.016.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002E-88CD-3
Abstract
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.