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  • Title: The MDGA1 gene confers risk to schizophrenia and bipolar disorder.
    Author: Li J, Liu J, Feng G, Li T, Zhao Q, Li Y, Hu Z, Zheng L, Zeng Z, He L, Wang T, Shi Y.
    Journal: Schizophr Res; 2011 Feb; 125(2-3):194-200. PubMed ID: 21146959.
    Abstract:
    OBJECTIVE: The structural, cytoarchitectural and functional brain abnormalities reported in patients with mental disorders may be due to aberrant neuronal migration influenced by cell adhesion molecules. MDGA1, like Ig-containing cell adhesion molecules, has several cell adhesion molecule-like domains. Moreover, Kahler et al. (2008) reported that the MDGA1 gene was a schizophrenia susceptibility gene in Scandinavian population. To further investigate whether the MDGA1 gene is a shared risk factor of schizophrenia, bipolar disorder and major depressive disorder in Chinese Han population, we conducted this study. METHODS: We recruited 1135 unrelated schizophrenia patients, 1135 unrelated bipolar disorder patients, 1135 unrelated major depressive disorder patients and 1135 unrelated controls of Chinese Han origin. A total of eleven common SNPs were genotyped using TaqMan® technology. RESULTS: The genotype frequency of rs11759115 differed significantly between schizophrenia patients and controls. The C-C haplotype of rs11759115-rs7769372 was also positively associated with schizophrenia (permutated p=0.046). Rs1883901 was found to be positively associated with bipolar disorder (allele: permutated p=0.0085; genotype: permutated p=0.0009; OR=1.31 [95%CI=1.12-1.52]). The A-G-G haplotype of rs1883901-rs10807187-rs9462343 was also positively associated with bipolar disorder with a global p value of 0.0391 after permutations. No individual SNP or haplotype was associated with major depressive disorder after permutations. CONCLUSION: The MDGA1 gene may confer risk to schizophrenia and bipolar disorder in Chinese Han population.
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