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  • Title: Association of MDR1 single-nucleotide polymorphisms and haplotype variants with multiple myeloma in Chinese Jiangsu Han population.
    Author: Yin G, Xiao Z, Ni Y, Qu X, Wu H, Lu H, Qian S, Chen L, Li J, Qiu H, Miao K.
    Journal: Tumour Biol; 2016 Jul; 37(7):9549-54. PubMed ID: 26790444.
    Abstract:
    Multidrug resistance 1 (MDR1) gene encodes P-glycoprotein (P-gp), which acts as an efflux pump and provides cell protection against various substances, and its single-nucleotide polymorphisms (SNPs) are associated with the development of malignant hematologic diseases. The present study aimed at investigating whether the MDR1 SNPs and haplotype variants were correlated with the susceptibility to multiple myeloma (MM). A total of 115 MM patients and 153 healthy controls from Jiangsu Han population were enrolled and genotyped by polymerase chain reaction-allele-specific primer (PCR-ASP) method or DNA direct sequencing at MDR1 loci of C1236T, G2677T/A, and C3435T. No significance was found in the distribution of alleles and genotypes in MDR1 three loci. Diplotype analysis has also demonstrated no effect in susceptibility to MM. But, in haplotype analysis, the haplotype of T-G-T was significantly more common than healthy controls (12.6 % in MM group vs. 1.7 % in control group, odds ratios (ORs) = 8.7, 95 % confidence interval (CI) 3.3-22.8, Pc  < 0.01). Our results pointed out that comparable allele, genotype, and diplotype frequencies among MM patients and controls in Chinese Jiangsu Han population were found; the frequency of T-G-T haplotype was significantly increased in MM group compared with the control group, which indicated that this haplotype might be associated with the susceptibility to MM.
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