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De novo mutations in schizophrenia implicate synaptic networks

Fromer, Menachem, Pocklington, Andrew ORCID:, Kavanagh, David, Williams, Hywel J. ORCID:, Dwyer, Sarah, Gormley, Padhraig, Georgieva, Lyudmila, Rees, Elliott ORCID:, Palta, Priit, Ruderfer, Douglas, Carrera, Noa ORCID:, Humphreys, Isla, Johnson, Jessica S., Roussos, Panos, Barker, Douglas D., Banks, Eric, Milanova, Vihra, Grant, Seth G., Hannon, Eilis ORCID:, Rose, Samuel A., Chambert, Kimberly, Mahajan, Milind, Scolnick, Edward M., Moran, Jennifer L., Kirov, George ORCID:, Palotie, Aarno, McCarroll, Steven A., Holmans, Peter ORCID:, Sklar, Pamela, Owen, Michael J. ORCID:, Purcell, Shaun M. and O'Donovan, Michael C. ORCID: 2014. De novo mutations in schizophrenia implicate synaptic networks. Nature 506 , pp. 179-184. 10.1038/nature12929

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Inherited alleles account for most of the genetic risk for schizophrenia. However, new (de novo) mutations, in the form of large chromosomal copy number changes, occur in a small fraction of cases and disproportionally disrupt genes encoding postsynaptic proteins. Here we show that small de novo mutations, affecting one or a few nucleotides, are overrepresented among glutamatergic postsynaptic proteins comprising activity-regulated cytoskeleton-associated protein (ARC) and N-methyl-d-aspartate receptor (NMDAR) complexes. Mutations are additionally enriched in proteins that interact with these complexes to modulate synaptic strength, namely proteins regulating actin filament dynamics and those whose messenger RNAs are targets of fragile X mental retardation protein (FMRP). Genes affected by mutations in schizophrenia overlap those mutated in autism and intellectual disability, as do mutation-enriched synaptic pathways. Aligning our findings with a parallel case–control study, we demonstrate reproducible insights into aetiological mechanisms for schizophrenia and reveal pathophysiology shared with other neurodevelopmental disorders.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Neuroscience and Mental Health Research Institute (NMHRI)
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Systems Immunity Research Institute (SIURI)
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: Nature
ISSN: 0028-0836
Date of Acceptance: 3 December 2013
Last Modified: 13 Feb 2024 12:53

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