OBJECTIVE: The objective was to confirm whether a homozygous genotype for the C957 allele of the C957T DRD2 gene single nucleotide polymorphism (SNP) is associated with schizophrenia in an independent study population. METHOD: We examined the genotypic distribution of this SNP in a set of clinically ascertained schizophrenic patients (n = 131) and age-matched control subjects (n = 364). Individuals were genotyped using automated analysis of fluorescently labeled PCR products. RESULTS: The distribution of grouped genotypes for the C957T DRD2 SNP (CC vs. CT, TT) showed that C homozygote genotype was over-represented in our patient sample when compared with control subjects. This difference reaches the statistical significance (chi(2) = 7.0; df = 1; P = 0.008; OR = 2.05; % CI 1.2-3.4). CONCLUSION: The findings of this study provide additional evidence that genetic variation at the DRD2 gene plays an important role in the vulnerability to schizophrenia.
OBJECTIVE: The objective was to confirm whether a homozygous genotype for the C957 allele of the C957TDRD2 gene single nucleotide polymorphism (SNP) is associated with schizophrenia in an independent study population. METHOD: We examined the genotypic distribution of this SNP in a set of clinically ascertained schizophrenicpatients (n = 131) and age-matched control subjects (n = 364). Individuals were genotyped using automated analysis of fluorescently labeled PCR products. RESULTS: The distribution of grouped genotypes for the C957TDRD2 SNP (CC vs. CT, TT) showed that C homozygote genotype was over-represented in our patient sample when compared with control subjects. This difference reaches the statistical significance (chi(2) = 7.0; df = 1; P = 0.008; OR = 2.05; % CI 1.2-3.4). CONCLUSION: The findings of this study provide additional evidence that genetic variation at the DRD2 gene plays an important role in the vulnerability to schizophrenia.
Authors: Huaiyu Mi; Paul D Thomas; Huijun Z Ring; Ruhong Jiang; Katrin Sangkuhl; Teri E Klein; Russ B Altman Journal: Pharmacogenet Genomics Date: 2011-06 Impact factor: 2.089
Authors: Kenneth Blum; Marlene Oscar-Berman; Rajendra D Badgaiyan; Tomas Palomo; Mark S Gold Journal: Med Hypotheses Date: 2014-02-26 Impact factor: 1.538