A genome-wide association study of shared risk across psychiatric disorders implicates gene regulation during fetal neurodevelopment

Andrew J. Schork, Hyejung Won, Vivek Appadurai, Ron Nudel, Mike Gandal, Olivier Delaneau, Malene Revsbech Christiansen, David M. Hougaard, Marie Bækved-Hansen, Jonas Bybjerg-Grauholm, Marianne Giørtz Pedersen, Esben Agerbo, Carsten Bøcker Pedersen, Benjamin M. Neale, Mark J. Daly, Naomi R. Wray, Merete Nordentoft, Ole Mors, Anders D. Børglum, Preben Bo MortensenAlfonso Buil, Wesley K. Thompson, Daniel H. Geschwind, Thomas Werge*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

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Abstract

There is mounting evidence that seemingly diverse psychiatric disorders share genetic etiology, but the biological substrates mediating this overlap are not well characterized. Here we leverage the unique Integrative Psychiatric Research Consortium (iPSYCH) study, a nationally representative cohort ascertained through clinical psychiatric diagnoses indicated in Danish national health registers. We confirm previous reports of individual and cross-disorder single-nucleotide polymorphism heritability for major psychiatric disorders and perform a cross-disorder genome-wide association study. We identify four novel genome-wide significant loci encompassing variants predicted to regulate genes expressed in radial glia and interneurons in the developing neocortex during mid-gestation. This epoch is supported by partitioning cross-disorder single-nucleotide polymorphism heritability, which is enriched at regulatory chromatin active during fetal neurodevelopment. These findings suggest that dysregulation of genes that direct neurodevelopment by common genetic variants may result in general liability for many later psychiatric outcomes.
Original languageEnglish
JournalNature Neuroscience
Volume22
Pages (from-to)353-361
ISSN1097-6256
DOIs
Publication statusPublished - 2019

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