Interactions of Pri-miRNA-34b/c and TP53 Polymorphisms on the Risk of Osteoporosis.

BACKGROUND Osteoporosis (OP) is a common, multifactorial disorder. Here, we investigated the association between polymorphisms in pri-miR-34b/c (rs4938723) and TP53 (Arg72Pro) and the prevalence of OP. METHODS A total of 681 individuals were assessed in a case-control study, including 310 patients with OP and 371 controls. Variants in pri-miR-34b/c and TP53 were identified using a polymerase chain reaction-restriction fragment length polymorphism method. RESULTS The presence of the CC and CT/CC pri-miR-34b/c genotypes were associated with a significantly reduced risk of OP compared with the TT genotype (CC vs. TT: odds ratio [OR] = 0.32, 95% confidence intervals [CI] = 0.17-0.59; p < 0.001; CT/CC vs. TT: OR = 0.69, 95% CI = 0.51-0.93; p = 0.016). The CC genotype was also associated with a significantly reduced OP risk compared with the TT/CT genotypes (OR = 0.35, 95% CI = 0.19-0.64; p < 0.001). Furthermore, compared with the carriers of the Arg72Pro GG genotype, carriers of the CC genotype had a 2.21-fold increased OP risk (95% CI = 1.45-3.37; p < 0.001) and CG/CC genotypes carriers had a 1.96-fold increased OP risk (95% CI = 1.39-2.76; p < 0.001). CONCLUSIONS The present findings indicate that pri-miR-34b/c rs4938723 and TP53 Arg72Pro polymorphisms may contribute to the risk of OP.

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