Rare chromosomal deletions and duplications increase risk of schizophrenia
By Jennifer L. Stone, M. O’Donovan, H. Gurling, G. Kirov, D. Blackwood, A. Corvin, N. Craddock, M. Gill, C. Hultman, P. Lichtenstein and 63 more. Nature, 2008
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Schizophrenia is a severe mental disorder marked by hallucinations, delusions, cognitive deficits and apathy, with a heritability estimated at 73–90% (ref. 1). Inheritance patterns are complex, and the number and type of genetic variants involved are not understood. Copy number variants (CNVs) have been identified in individual patients with schizophrenia and also in neurodevelopmental disorders, but large-scale genome-wide surveys have not been performed. Here we report a genome-wide survey of rare CNVs in 3,391 patients with schizophrenia and 3,181 ancestrally matched controls, using high-density microarrays. For CNVs that were observed in less than 1% of the sample and were more than 100 kilobases in length, the total burden is increased 1.15-fold in patients with schizophrenia in comparison with controls. This effect was more pronounced for rarer, single-occurrence CNVs and for those that involved genes as opposed to those that did not. As expected, deletions were found within the region critical for velo-cardio-facial syndrome, which includes psychotic symptoms in 30% of patients. Associations with schizophrenia were also found for large deletions on chromosome 15q13.3 and 1q21.1. These associations have not previously been reported, and they remained significant after genome-wide correction. Our results provide strong support for a model of schizophrenia pathogenesis that includes the effects of multiple rare structural variants, both genome-wide and at specific loci.
Subfields: Genetics, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/336ae9d5787613507661db096233b8e1df83f6ae
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Citations in the corpus
- Multiple recurrent de novo CNVs, including duplications of the 7q11.23 Williams syndrome region, are strongly associated with autism. (2011, background): “…MACROD2 (Anney et al., 2010), CDH9 and CDH10 (Wang et al., 2009), the MET oncogene (Campbell et al., 2006), EN2 (Gharani et al., 2004), and selected schizophrenia loci (ISC, 2008; McCarthy et al., 2009; Millar et al., 2000; Stefansson et al., 2008; Walsh et al., 2008; Xu et al., 2008) (Table 3).”