ABSTRACT
Numerous studies have evaluated the association between the Ala1330Val polymorphism of the low-density lipoprotein receptor-related proteins 5 (LRP5) gene and fracture risk. However, the specific association is still controversial. The aim of this study was to investigate their correlation via meta-analysis. and EMBASE databases were searched, and data were extracted independently by two reviewers. Odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were used to assess the strength of the associations. Statistical analysis was performed using the STATA 12.0 software. Seven studies, involving 808 cases and 1586 controls, were included in the analysis. Meta-analysis results showed no significant association between the LRP5 Ala1330Val polymorphism and fracture risk (ValVal vs AlaAla: OR = 1.25, 95%CI = 0.82-1.91; AlaVal vs AlaAla: OR = 1.16, 95%CI = 0.95-1.42; dominant model: OR = 1.77, 95%CI = 0.96-1.41; recessive model: OR = 1.21, 95%CI = 0.80-1.83). Taking into account the effect of ethnicity, the LRP5 Ala1330Val polymorphism was not associated with the risk of fracture in Asians or Caucasians. The results of the current meta-analysis indicate that the LRP5 Ala1330Val polymorphism may not be correlated with fracture susceptibility.