RT Journal Article SR Electronic T1 Unraveling the polygenic architecture of complex traits using blood eQTL metaanalysis JF bioRxiv FD Cold Spring Harbor Laboratory SP 447367 DO 10.1101/447367 A1 Urmo Võsa A1 Annique Claringbould A1 Harm-Jan Westra A1 Marc Jan Bonder A1 Patrick Deelen A1 Biao Zeng A1 Holger Kirsten A1 Ashis Saha A1 Roman Kreuzhuber A1 Silva Kasela A1 Natalia Pervjakova A1 Isabel Alvaes A1 Marie-Julie Fave A1 Mawusse Agbessi A1 Mark Christiansen A1 Rick Jansen A1 Ilkka Seppälä A1 Lin Tong A1 Alexander Teumer A1 Katharina Schramm A1 Gibran Hemani A1 Joost Verlouw A1 Hanieh Yaghootkar A1 Reyhan Sönmez A1 Andrew Brown A1 Viktorija Kukushkina A1 Anette Kalnapenkis A1 Sina Rüeger A1 Eleonora Porcu A1 Jaanika Kronberg-Guzman A1 Johannes Kettunen A1 Joseph Powell A1 Bernett Lee A1 Futao Zhang A1 Wibowo Arindrarto A1 Frank Beutner A1 BIOS Consortium A1 Harm Brugge A1 i2QTL Consortium A1 Julia Dmitreva A1 Mahmoud Elansary A1 Benjamin P. Fairfax A1 Michel Georges A1 Bastiaan T. Heijmans A1 Mika Kähönen A1 Yungil Kim A1 Julian C. Knight A1 Peter Kovacs A1 Knut Krohn A1 Shuang Li A1 Markus Loeffler A1 Urko M. Marigorta A1 Hailang Mei A1 Yukihide Momozawa A1 Martina Müller-Nurasyid A1 Matthias Nauck A1 Michel Nivard A1 Brenda Penninx A1 Jonathan Pritchard A1 Olli Raitakari A1 Olaf Rotzchke A1 Eline P. Slagboom A1 Coen D.A. Stehouwer A1 Michael Stumvoll A1 Patrick Sullivan A1 Peter A.C. ‘t Hoen A1 Joachim Thiery A1 Anke Tönjes A1 Jenny van Dongen A1 Maarten van Iterson A1 Jan Veldink A1 Uwe Völker A1 Cisca Wijmenga A1 Morris Swertz A1 Anand Andiappan A1 Grant W. Montgomery A1 Samuli Ripatti A1 Markus Perola A1 Zoltan Kutalik A1 Emmanouil Dermitzakis A1 Sven Bergmann A1 Timothy Frayling A1 Joyce van Meurs A1 Holger Prokisch A1 Habibul Ahsan A1 Brandon Pierce A1 Terho Lehtimäki A1 Dorret Boomsma A1 Bruce M. Psaty A1 Sina A. Gharib A1 Philip Awadalla A1 Lili Milani A1 Willem Ouwehand A1 Kate Downes A1 Oliver Stegle A1 Alexis Battle A1 Jian Yang A1 Peter M. Visscher A1 Markus Scholz A1 Gregory Gibson A1 Tõnu Esko A1 Lude Franke YR 2018 UL http://biorxiv.org/content/early/2018/10/19/447367.abstract AB Summary While many disease-associated variants have been identified through genome-wide association studies, their downstream molecular consequences remain unclear.To identify these effects, we performed cis- and trans-expression quantitative trait locus (eQTL) analysis in blood from 31,684 individuals through the eQTLGen Consortium.We observed that cis-eQTLs can be detected for 88% of the studied genes, but that they have a different genetic architecture compared to disease-associated variants, limiting our ability to use cis-eQTLs to pinpoint causal genes within susceptibility loci.In contrast, trans-eQTLs (detected for 37% of 10,317 studied trait-associated variants) were more informative. Multiple unlinked variants, associated to the same complex trait, often converged on trans-genes that are known to play central roles in disease etiology.We observed the same when ascertaining the effect of polygenic scores calculated for 1,263 genome-wide association study (GWAS) traits. Expression levels of 13% of the studied genes correlated with polygenic scores, and many resulting genes are known to drive these traits.