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

  • U. Vosa*
  • , A. Claringbould*
  • , H.J. Westra
  • , M.J. Bonder
  • , P. Deelen
  • , B. Zeng
  • , H. Kirsten
  • , A. Saha
  • , R. Kreuzhuber
  • , S. Yazar
  • , H. Brugge
  • , R. Oelen
  • , D.H. de Vries
  • , M.G.P. van der Wijst
  • , S. Kasela
  • , N. Pervjakova
  • , I. Alves
  • , M.J. Fave
  • , M. Agbessi
  • , M.W. Christiansen
  • R. Jansen, I. Seppala, L. Tong, A. Teumer, K. Schramm, G. Hemani, J. Verlouw, H. Yaghootkar, R.S. Flitman, A. Brown, V. Kukushkina, A. Kalnapenkis, S. Rueger, E. Porcu, J. Kronberg, J. Kettunen, B. Lee, F.T. Zhang, T. Qi, J.A. Hernandez, W. Arindrarto, F. Beutner, J. Dmitrieva, M. Elansary, B.P. Fairfax, M. Georges, B.T. Heijmans, A.W. Hewitt, BIOS Consortium, i2QTL Consortium, C.D.A. Stehouwer
*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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.Analyses of expression profiles from whole blood of 31,684 individuals identify cis-expression quantitative trait loci (eQTL) effects for 88% of genes and trans-eQTL effects for 37% of trait-associated variants.
Original languageEnglish
Pages (from-to)1300-1310
Number of pages22
JournalNature Genetics
Volume53
Issue number9
Early online date2021
DOIs
Publication statusPublished - Sept 2021

Keywords

  • GENOME-WIDE ASSOCIATION
  • SERINE BIOSYNTHESIS
  • HUMAN TRANSCRIPTOME
  • ARCHITECTURE
  • DISEASE
  • DEFICIENCY
  • RELEVANCE
  • DISORDER
  • LINKS
  • RISK

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