Genome-wide association study identifies 48 common genetic variants associated with handedness

G Cuellar-Partida, JY Tung, N Eriksson, E Albrecht, F Aliev, OA Andreassen, I Barroso, JS Beckmann, M P Boks, DI Boomsma, HA Boyd, Monique Breteler, H Campbell, DI Chasman, LF Cherkas, G Davies, EJCN de Geus, IJ Deary, P Deloukas, DM DickDL Duffy, JG Eriksson, T Esko, B Feenstra, F Geller, C Gieger, I Giegling, SD Gordon, J Han, TF Hansen, AM Hartmann, C Hayward, K Heikkilä, AA Hicks, JN Hirschhorn, JJ Hottenga, JE Huffman, LD Hwang, Arfan Ikram, J Kaprio, JP Kemp, KTH Khaw, N Klopp, B Konte, Z Kutalik, J Lahti, X Li, RJ Loos, M Luciano, SH Magnusson, M Mangino, P Marques-Vidal, NG Martin, WL McArdle, MI McCarthy, Maria Medina Gomez, M Melbye, SA Melville, A Metspalu, L Milani, V Mooser, M Nelis, DR Nyholt, KS O’Connell, Roel Ophoff, C Palmer, A Palotie, T Palviainen, G Pare, L Paternoster, L Peltonen, BWJH Penninx, O Polasek, PP Pramstaller, I Prokopenko, K Raikkonen, S Ripatti, Fernando Rivadeneira, I Rudan, D Rujescu, JH Smit, GD Smith, JW Smoller, N Soranzo, TD Spector, BS Pourcain, JM Starr, H Stefánsson, S Steinberg, M Teder-Laving, G Thorleifsson, K Stefánsson, NJ Timpson, André Uitterlinden, Cornelia Duijn, FJA van Rooij, JM Vink, P Vollenweider, E Vuoksimaa, G Waeber, NJ Wareham, N Warrington, D Waterworth, T Werge, HE Wichmann, E Widen, G Willemsen, AF Wright, MJ Wright, M Xu, JH Zhao, P Kraft, DA Hinds, CM Lindgren, R Mägi, BM Neale, DM Evans, SE Medland

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96 Citations (Scopus)

Abstract

Handedness has been extensively studied because of its relationship with language and the over-representation of left-handers in some neurodevelopmental disorders. Using data from the UK Biobank, 23andMe and the International Handedness Consortium, we conducted a genome-wide association meta-analysis of handedness (N = 1,766,671). We found 41 loci associated (P < 5 × 10−8) with left-handedness and 7 associated with ambidexterity. Tissue-enrichment analysis implicated the CNS in the aetiology of handedness. Pathways including regulation of microtubules and brain morphology were also highlighted. We found suggestive positive genetic correlations between left-handedness and neuropsychiatric traits, including schizophrenia and bipolar disorder. Furthermore, the genetic correlation between left-handedness and ambidexterity is low (rG = 0.26), which implies that these traits are largely influenced by different genetic mechanisms. Our findings suggest that handedness is highly polygenic and that the genetic variants that predispose to left-handedness may underlie part of the association with some psychiatric disorders.

Original languageEnglish
Pages (from-to)59-70
Number of pages12
JournalNature Human Behaviour
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 2021

Research programs

  • EMC OR-01

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