Psychiatric genome-wide association study analyses implicate neuronal, immune and histone pathways

The Network and Pathway Analysis Subgroup of the Psychiatric Genomics Consortium, International Inflammatory Bowel Disease Genetics Consortium (IIBDGC)

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Abstract

Genome-wide association studies (GWAS) of psychiatric disorders have identified multiple genetic associations with such disorders, but better methods are needed to derive the underlying biological mechanisms that these signals indicate. We sought to identify biological pathways in GWAS data from over 60,000 participants from the Psychiatric Genomics Consortium. We developed an analysis framework to rank pathways that requires only summary statistics. We combined this score across disorders to find common pathways across three adult psychiatric disorders: schizophrenia, major depression and bipolar disorder. Histone methylation processes showed the strongest association, and we also found statistically significant evidence for associations with multiple immune and neuronal signaling pathways and with the postsynaptic density. Our study indicates that risk variants for psychiatric disorders aggregate in particular biological pathways and that these pathways are frequently shared between disorders. Our results confirm known mechanisms and suggest several novel insights into the etiology of psychiatric disorders.

Original languageEnglish (US)
Pages (from-to)199-209
Number of pages11
JournalNature Neuroscience
Volume18
Issue number2
DOIs
StatePublished - Feb 17 2015

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ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

The Network and Pathway Analysis Subgroup of the Psychiatric Genomics Consortium, & International Inflammatory Bowel Disease Genetics Consortium (IIBDGC) (2015). Psychiatric genome-wide association study analyses implicate neuronal, immune and histone pathways. Nature Neuroscience, 18(2), 199-209. https://doi.org/10.1038/nn.3922