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  • Title: Novel polymorphism in the promoter and coding regions of the human cholecystokinin B receptor gene: an association analysis with schizophrenia.
    Author: Tachikawa H, Harada S, Kawanishi Y, Okubo T, Shiraishi H.
    Journal: Am J Med Genet; 1999 Dec 15; 88(6):700-4. PubMed ID: 10581492.
    Abstract:
    Genetic variations in the 5'-untranslated region and the coding region of the CCK-B receptor (CCK-BR) gene were investigated in healthy controls. Novel variants (-215 C-->A, Leu37Phe, Arg319Glu) were found in addition to the mutations (Val125Iso, His207His, Arg215His, 2491 C-->A) reported previously. In the present study, association analysis was carried out for these variants between 80 unrelated schizophrenic patients and 100 healthy controls. The genotype frequency of the -215 C-->A nucleotide substitution in the 5'-untranslated region of CCK-BR gene was significantly higher in the schizophrenic patients than in the controls (6.25%, P = 0.037). However, the difference was not significant after Bonferroni correction for multiple comparisons. Moreover, no association was found between the clinical characteristics of the patients and the genotype frequencies of the variants. These results suggest that the CCK-BR gene polymorphisms have no association with schizophrenia nor its clinical heterogeneity. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 88:700-704, 1999.
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