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  • Title: The single nucleotide polymorphism and haplotype analysis of MDR1 in Jiangsu Han population of China.
    Author: Qiu H, Dong H, Pan S, Miao K.
    Journal: Biomed Pharmacother; 2012 Sep; 66(6):459-63. PubMed ID: 22902647.
    Abstract:
    The aim of this study was to perform the frequency distribution of MDR1 gene SNPs and haplotypes of Jiangsu Han population in China. A total of 225 Jiangsu Han unrelated volunteers were enrolled and genotyped by PCR-ASP method at three loci: C1236T (rs1128503), G2677T/A (rs2032582) and C3435T (rs1045642). In total, C and T were found at locus 1236, with the frequency of 35% and 65%, respectively. The most frequent allele at locus 2677 was G with the frequency of 44%, followed by T (41%) and A (15%). At locus 3435, C was more common (60%) than T (40%). The most common haplotype at loci 1236-2677-3435 was T-T-T (31.84%), at loci 1236-2677 was T-T (37.68%), at loci 2677-3435 was G-C (39.06%), and at loci 1236-3435 was T-T (34.28%). The haplotype linkage disequilibrium study found that all three loci were in linkage disequilibrium, such as T-T at loci 1236-2677, T-T at loci 2677-3435 and C-C at loci 1236-3435 (P<0.01). The dendrogram study indicated that the distribution of MDR1 SNPs in Jiangsu Han population were close to Japan and Malay populations and far away from European countries. These findings could shade new lights in population genetics and anthropology studies of Han-Chinese. It also provides basic data for research on MDR1 gene polymorphism, disease association and drug resistance study.
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