Exome sequencing supports a de novo mutational paradigm for schizophrenia.
Exome sequencing supports a de novo mutational paradigm for schizophrenia.
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DOI:
10.1038/ng.902
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发表时间:
2011-08-07
期刊:
影响因子:
30.8
通讯作者:
Karayiorgou, Maria
中科院分区:
文献类型:
--
作者:
Xu, Bin;Roos, J. Louw;Dexheimer, Phillip;Boone, Braden;Plummer, Brooks;Levy, Shawn;Gogos, Joseph A.;Karayiorgou, Maria
Despite high heritability, a large fraction of cases with schizophrenia do not have a family history of the disease (sporadic cases). Here, we examine the possibility that rare de novo protein-altering mutations contribute to the genetic component of schizophrenia by sequencing the exome of 53 sporadic cases, 22 unaffected controls and their parents. We identified 40 de novo mutations in 27 patients affecting 40 genes including a potentially disruptive mutation in DGCR2, a gene removed by the recurrent schizophrenia-predisposing 22q11.2 microdeletion. Comparison to rare inherited variants revealed that the identified de novo mutations show a large excess of nonsynonymous changes in cases, as well as a greater potential to affect protein structure and function. Our analysis reveals a major role of de novo mutations in schizophrenia and also a large mutational target, which together provide a plausible explanation for the high global incidence and persistence of the disease.
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