Abstract:
:Schizophrenia (SCZ) is associated with differences in subcortical brain volumes and intracranial volume (ICV). However, little is known about the underlying etiology of these brain alterations. Here, we explored whether brain structure volumes and SCZ share genetic risk factors. Using conditional false discovery rate (FDR) analysis, we integrated genome-wide association study (GWAS) data on SCZ (n = 82315) and GWAS data on 7 subcortical brain volumes and ICV (n = 11840). By conditioning the FDR on overlapping associations, this statistical approach increases power to discover genetic loci. To assess the credibility of our approach, we studied the identified loci in larger GWAS samples on ICV (n = 26577) and hippocampal volume (n = 26814). We observed polygenic overlap between SCZ and volumes of hippocampus, putamen, and ICV. Based on conjunctional FDR < 0.05, we identified 2 loci shared between SCZ and ICV implicating genes FOXO3 (rs10457180) and ITIH4 (rs4687658), 2 loci shared between SCZ and hippocampal volume implicating SLC4A10 (rs4664442) and SPATS2L (rs1653290), and 2 loci shared between SCZ and volume of putamen implicating DCC (rs4632195) and DLG2 (rs11233632). The loci shared between SCZ and hippocampal volume or ICV had not reached significance in the primary GWAS on brain phenotypes. Proving our point of increased power, 2 loci did reach genome-wide significance with ICV (rs10457180) and hippocampal volume (rs4664442) in the larger GWAS. Three of the 6 identified loci are novel for SCZ. Altogether, the findings provide new insights into the relationship between SCZ and brain structure volumes, suggesting that their genetic architectures are not independent.
journal_name
Schizophr Bulljournal_title
Schizophrenia bulletinauthors
Smeland OB,Wang Y,Frei O,Li W,Hibar DP,Franke B,Bettella F,Witoelar A,Djurovic S,Chen CH,Thompson PM,Dale AM,Andreassen OAdoi
10.1093/schbul/sbx148subject
Has Abstractpub_date
2018-06-06 00:00:00pages
854-864issue
4eissn
0586-7614issn
1745-1701pii
4607868journal_volume
44pub_type
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1093/schbul/5.1.4
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/22.2.191
更新日期:1996-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
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更新日期:2016-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type:
doi:10.1093/oxfordjournals.schbul.a033387
更新日期:1999-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,随机对照试验
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更新日期:2016-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-04-10 00:00:00