DISC1 conditioned GWAS for psychosis proneness in a large Finnish birth cohort.

DISC1 conditioned GWAS for psychosis proneness in a large Finnish birth cohort.
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DOI:
10.1371/journal.pone.0030643
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Hennah W
Hennah W
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tomppo L;Ekelund J;Lichtermann D;Veijola J;Järvelin MR;Hennah W

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遗传证据表明 DISC1 基因与许多精神疾病的病因有关。此前,我们在 1966 年芬兰北部出生队列 (NFBC66) 中报告了 DISC1 与精神病倾向测量、修订的社交快感缺乏量表 (RSAS) 和修订的身体快感缺失量表 (RPAS) 之间的关联。作为芬兰出生队列研究的一部分,最近进行了全基因组关联分析。在本研究中,我们以我们之前的 DISC1 观察为条件,重新分析了这两种精神病倾向指标的全基因组关联数据。从原始 NFBC66 样本 (N = 12 058) 中,4 561 个人提供了表型和基因型数据。在全基因组水平上没有显着的标记。然而,通过显示关联证据的位点突出显示了与精神疾病具有生物学相关性的几个基因(≥3 个 SNP,P<10E-4)。其中包括蛋白质编码基因 CXCL3、KIAA1128、LCT、MED13L、TMCO7、TTN 和 micro RNA MIR620。通过调整之前针对 DISC1 的全基因组关联研究,我们已经能够识别出八个与精神病倾向相关的基因。此外,这些分子主要与 DISC1 通路相关,加强了该基因网络在精神疾病病因学中作用的证据。一旦得到证实,在大量人群中使用定量测量精神病倾向的方法将得出这些发现;更广泛地涉及与精神病和精神病倾向相关的多种疾病。
Genetic evidence implicates the DISC1 gene in the etiology of a number of mental illnesses. Previously, we have reported association between DISC1 and measures of psychosis proneness, the Revised Social Anhedonia Scale (RSAS) and Revised Physical Anhedonia Scale (RPAS), in the Northern Finland Birth Cohort 1966 (NFBC66). As part of the studies of this Finnish birth cohort genome-wide association analysis has recently been performed. In the present study, we re-analyzed the genome-wide association data with regard to these two measures of psychosis proneness, conditioning on our previous DISC1 observation. From the original NFBC66 sample (N = 12 058), 4 561 individuals provided phenotype and genotype data. No markers were significant at the genome-wide level. However, several genes with biological relevance to mental illnesses were highlighted through loci displaying suggestive evidence for association (≥3 SNP with P<10E-4). These included the protein coding genes, CXCL3, KIAA1128, LCT, MED13L, TMCO7, TTN, and the micro RNA MIR620. By conditioning a previous genome-wide association study on DISC1, we have been able to identify eight genes as associating to psychosis proneness. Further, these molecules predominantly link to the DISC1 pathway, strengthening the evidence for the role of this gene network in the etiology of mental illness. The use of quantitative measures of psychosis proneness in a large population cohort will make these findings, once verified; more generalized to a broad selection of disorders related to psychoses and psychosis proneness.
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