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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Psychiatry
2016 ; 21
(2
): 290-7
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Genes with de novo mutations are shared by four neuropsychiatric disorders
discovered from NPdenovo database
#MMPMID25849321
Li J
; Cai T
; Jiang Y
; Chen H
; He X
; Chen C
; Li X
; Shao Q
; Ran X
; Li Z
; Xia K
; Liu C
; Sun ZS
; Wu J
Mol Psychiatry
2016[Feb]; 21
(2
): 290-7
PMID25849321
show ga
Currently, many studies on neuropsychiatric disorders have utilized massive
trio-based whole-exome sequencing (WES) and whole-genome sequencing (WGS) to
identify numerous de novo mutations (DNMs). Here, we retrieved 17,104 DNMs from
3555 trios across four neuropsychiatric disorders: autism spectrum disorder,
epileptic encephalopathy, intellectual disability and schizophrenia, in addition
to unaffected siblings (control), from 36 studies by WES/WGS. After eliminating
non-exonic variants, we focused on 3334 exonic DNMs for evaluation of their
association with these diseases. Our results revealed a higher prevalence of DNMs
in the probands of all four disorders compared with the one in the controls
(P<1.3 × 10(-7)). The elevated DNM frequency is dominated by
loss-of-function/deleterious single-nucleotide variants and frameshift indels
(that is, extreme mutations, P<4.5 × 10(-5)). With extensive annotation of these
'extreme' mutations, we prioritized 764 candidate genes in these four disorders.
A combined analysis of Gene Ontology, microRNA targets and transcription factor
targets revealed shared biological process and non-coding regulatory elements of
candidate genes in the pathology of neuropsychiatric disorders. In addition,
weighted gene co-expression network analysis of human laminar-specific
neocortical expression data showed that candidate genes are convergent on eight
shared modules with specific layer enrichment and biological process features.
Furthermore, we identified that 53 candidate genes are associated with more than
one disorder (P<0.000001), suggesting a possibly shared genetic etiology
underlying these disorders. Particularly, DNMs of the SCN2A gene are frequently
occurred across all four disorders. Finally, we constructed a freely available
NPdenovo database, which provides a comprehensive catalog of the DNMs identified
in neuropsychiatric disorders.
|Autism Spectrum Disorder/*genetics
[MESH]
|Computational Biology/methods
[MESH]
|Databases, Genetic
[MESH]
|Exome/genetics
[MESH]
|Genetic Predisposition to Disease/genetics
[MESH]