A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype.
Patients with schizophrenia and their siblings typically show subtle changes of brain structures, such as a reduction of hippocampal volume. Hippocampal volume is heritable, may explain a variety of cognitive symptoms of schizophrenia and is thus considered an intermediate phenotype for this mental...
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oai:doaj.org-article:84aee48741c3419396749009aa0d271d2021-11-18T07:40:44ZA Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype.1932-620310.1371/journal.pone.0064872https://doaj.org/article/84aee48741c3419396749009aa0d271d2013-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0064872https://doaj.org/toc/1932-6203Patients with schizophrenia and their siblings typically show subtle changes of brain structures, such as a reduction of hippocampal volume. Hippocampal volume is heritable, may explain a variety of cognitive symptoms of schizophrenia and is thus considered an intermediate phenotype for this mental illness. The aim of our analyses was to identify single-nucleotide polymorphisms (SNP) related to hippocampal volume without making prior assumptions about possible candidate genes. In this study, we combined genetics, imaging and neuropsychological data obtained from the Mind Clinical Imaging Consortium study of schizophrenia (n = 328). A total of 743,591 SNPs were tested for association with hippocampal volume in a genome-wide association study. Gene expression profiles of human hippocampal tissue were investigated for gene regions of significantly associated SNPs. None of the genetic markers reached genome-wide significance. However, six highly correlated SNPs (rs4808611, rs35686037, rs12982178, rs1042178, rs10406920, rs8170) on chromosome 19p13.11, located within or in close proximity to the genes NR2F6, USHBP1, and BABAM1, as well as four SNPs in three other genomic regions (chromosome 1, 2 and 10) had p-values between 6.75×10(-6) and 8.3×10(-7). Using existing data of a very recently published GWAS of hippocampal volume and additional data of a multicentre study in a large cohort of adolescents of European ancestry, we found supporting evidence for our results. Furthermore, allelic differences in rs4808611 and rs8170 were highly associated with differential mRNA expression in the cis-acting region. Associations with memory functioning indicate a possible functional importance of the identified risk variants. Our findings provide new insights into the genetic architecture of a brain structure closely linked to schizophrenia. In silico replication, mRNA expression and cognitive data provide additional support for the relevance of our findings. Identification of causal variants and their functional effects may unveil yet unknown players in the neurodevelopment and the pathogenesis of neuropsychiatric disorders.Johanna HassEsther WaltonHolger KirstenJingyu LiuLutz PriebeChristiane WolfNazanin KarbalaiRandy GollubTonya WhiteVeit RoessnerKathrin U MüllerTomas PausMichael N SmolkaGunter SchumannIMAGEN ConsortiumMarkus ScholzSven CichonVince CalhounStefan EhrlichPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 6, p e64872 (2013) |
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Medicine R Science Q |
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Medicine R Science Q Johanna Hass Esther Walton Holger Kirsten Jingyu Liu Lutz Priebe Christiane Wolf Nazanin Karbalai Randy Gollub Tonya White Veit Roessner Kathrin U Müller Tomas Paus Michael N Smolka Gunter Schumann IMAGEN Consortium Markus Scholz Sven Cichon Vince Calhoun Stefan Ehrlich A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| description |
Patients with schizophrenia and their siblings typically show subtle changes of brain structures, such as a reduction of hippocampal volume. Hippocampal volume is heritable, may explain a variety of cognitive symptoms of schizophrenia and is thus considered an intermediate phenotype for this mental illness. The aim of our analyses was to identify single-nucleotide polymorphisms (SNP) related to hippocampal volume without making prior assumptions about possible candidate genes. In this study, we combined genetics, imaging and neuropsychological data obtained from the Mind Clinical Imaging Consortium study of schizophrenia (n = 328). A total of 743,591 SNPs were tested for association with hippocampal volume in a genome-wide association study. Gene expression profiles of human hippocampal tissue were investigated for gene regions of significantly associated SNPs. None of the genetic markers reached genome-wide significance. However, six highly correlated SNPs (rs4808611, rs35686037, rs12982178, rs1042178, rs10406920, rs8170) on chromosome 19p13.11, located within or in close proximity to the genes NR2F6, USHBP1, and BABAM1, as well as four SNPs in three other genomic regions (chromosome 1, 2 and 10) had p-values between 6.75×10(-6) and 8.3×10(-7). Using existing data of a very recently published GWAS of hippocampal volume and additional data of a multicentre study in a large cohort of adolescents of European ancestry, we found supporting evidence for our results. Furthermore, allelic differences in rs4808611 and rs8170 were highly associated with differential mRNA expression in the cis-acting region. Associations with memory functioning indicate a possible functional importance of the identified risk variants. Our findings provide new insights into the genetic architecture of a brain structure closely linked to schizophrenia. In silico replication, mRNA expression and cognitive data provide additional support for the relevance of our findings. Identification of causal variants and their functional effects may unveil yet unknown players in the neurodevelopment and the pathogenesis of neuropsychiatric disorders. |
| format |
article |
| author |
Johanna Hass Esther Walton Holger Kirsten Jingyu Liu Lutz Priebe Christiane Wolf Nazanin Karbalai Randy Gollub Tonya White Veit Roessner Kathrin U Müller Tomas Paus Michael N Smolka Gunter Schumann IMAGEN Consortium Markus Scholz Sven Cichon Vince Calhoun Stefan Ehrlich |
| author_facet |
Johanna Hass Esther Walton Holger Kirsten Jingyu Liu Lutz Priebe Christiane Wolf Nazanin Karbalai Randy Gollub Tonya White Veit Roessner Kathrin U Müller Tomas Paus Michael N Smolka Gunter Schumann IMAGEN Consortium Markus Scholz Sven Cichon Vince Calhoun Stefan Ehrlich |
| author_sort |
Johanna Hass |
| title |
A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| title_short |
A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| title_full |
A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| title_fullStr |
A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| title_full_unstemmed |
A Genome-Wide Association Study Suggests Novel Loci Associated with a Schizophrenia-Related Brain-Based Phenotype. |
| title_sort |
genome-wide association study suggests novel loci associated with a schizophrenia-related brain-based phenotype. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2013 |
| url |
https://doaj.org/article/84aee48741c3419396749009aa0d271d |
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