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Large-scale cis- and trans-eQTL analyses identify thousands of genetic loci and polygenic scores that regulate blood gene expression

  • BIOS consortium
  • , i2QTL Consortium
  • University of Groningen
  • Estonian Biocentre
  • European Molecular Biology Laboratory
  • Utrecht University
  • Georgia Institute of Technology
  • Leipzig University
  • Johns Hopkins University
  • University of Cambridge
  • NHS Blood and Transplant
  • Garvan Institute of Medical Research
  • Ontario Institute for Cancer Research
  • Nantes Université
  • University of Washington
  • Tampere University
  • The University of Chicago
  • University of Greifswald
  • German Centre for Cardiovascular Research
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • University Hospital Munich
  • University of Bristol
  • Erasmus University Rotterdam
  • University of Exeter Medical School
  • University of Westminster
  • Luleå University of Technology
  • University of Lausanne
  • Swiss Institute of Bioinformatics
  • Universite de Geneve Faculte de Medecine
  • University of Dundee
  • University of Oulu
  • Finnish Institute for Health and Welfare, Helsinki, Finland
  • Agency for Science, Technology and Research, Singapore
  • University of Queensland
  • Leiden University
  • University of Liege
  • University of Oxford
  • Menzies Research Institute, University of Tasmania, Hobart, TAS, Australia
  • University of Melbourne
  • Icahn School of Medicine at Mount Sinai
  • Basque Research and Technology Alliance (BRTA)
  • Basque Foundation for Science
  • Laboratory for Genotyping Development, Japan
  • Ludwig Maximilian University of Munich
  • VU University Medical Hospital
  • Stanford University
  • University of Turku
  • Maastricht University Medical Center and Cardiovascular Research Institute Maastricht (CARIM)
  • Karolinska Institutet
  • Radboud University Nijmegen
  • University of Helsinki
  • Broad Institute
  • University of Geneva
  • Technical University of Munich
  • Human Genetics, United Kingdom
  • National Center for Tumor Diseases Heidelberg
  • Westlake University
  • Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China
  • University of New South Wales

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Abstract

Trait-associated genetic variants affect complex phenotypes primarily via regulatory mechanisms on the transcriptome. To investigate the genetics of gene expression, we performed cis- and trans-expression quantitative trait locus (eQTL) analyses using blood-derived expression from 31,684 individuals through the eQTLGen Consortium. We detected cis-eQTL for 88% of genes, and these were replicable in numerous tissues. Distal trans-eQTL (detected for 37% of 10,317 trait-associated variants tested) showed lower replication rates, partially due to low replication power and confounding by cell type composition. However, replication analyses in single-cell RNA-seq data prioritized intracellular trans-eQTL. Trans-eQTL exerted their effects via several mechanisms, primarily through regulation by transcription factors. Expression of 13% of the genes correlated with polygenic scores for 1,263 phenotypes, pinpointing potential drivers for those traits. In summary, this work represents a large eQTL resource, and its results serve as a starting point for in-depth interpretation of complex phenotypes.
Original languageEnglish
Pages (from-to)1300-1310
Number of pages11
JournalNature genetics
Volume53
Issue number9
DOIs
Publication statusPublished - 1 Sept 2021

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