Psychiatric genome-wide association study analyses implicate neuronal, immune and histone pathways.
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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. |
Year of Publication | 2015
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Journal | Nat Neurosci
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Volume | 18
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Issue | 2
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Pages | 199-209
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Date Published | 2015 Feb
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ISSN | 1546-1726
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DOI | 10.1038/nn.3922
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PubMed ID | 25599223
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PubMed Central ID | PMC4378867
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Grant list | K99 MH101367 / MH / NIMH NIH HHS / United States
K99MH101367 / MH / NIMH NIH HHS / United States
MR/L010305/1 / Medical Research Council / United Kingdom
R01 CA082659 / CA / NCI NIH HHS / United States
R01 GM047845 / GM / NIGMS NIH HHS / United States
R01 MH094293 / MH / NIMH NIH HHS / United States
R01 MH104261 / MH / NIMH NIH HHS / United States
R25 MH060482 / MH / NIMH NIH HHS / United States
U01 MH085520 / MH / NIMH NIH HHS / United States
U01 MH094432 / MH / NIMH NIH HHS / United States
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