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Journal of Genetics

, Volume 96, Issue 6, pp 993–1003 | Cite as

Association of lactase 13910 C/T polymorphism with bone mineral density and fracture risk: a meta-analysis

  • Yougen Wu
  • Yinghua Li
  • Yunqing Cui
  • Yunjiao Zhou
  • Qingqing QianEmail author
  • Yang HongEmail author
Research Article
  • 88 Downloads

Abstract

A number of studies have investigated the association of lactase (LCT, C/T-13910) gene polymorphism with bone mineral density (BMD) and fracture risk, but previous results were inconclusive. In this study, a meta-analysis was performed to quantify the association of LCT (C/T-13910) polymorphism with BMD and fracture risk. Eligible publications were searched in the PubMed, Web of Science, Embase databases, Google Scholar, Yahoo and Baidu. Pooled weighed mean difference (WMD) or odds ratio (OR) with their 95% confidence interval (CI) were calculated using a fixed-effects or random-effects model. A total of nine articles with 8871 subjects were investigated in the present meta-analysis. Overall, the TT/TC genotypes of LCT 13910 C/T polymorphism showed significantly higher BMD than those with the CC genotype at femur neck (FN) (\(\hbox {WMD} = 0.011\,\hbox {g/cm}^{2}\), 95% CI \(=\) 0.004–0.018, \(P = 0.003\)). Besides, LCT 13910 C/T polymorphism may decrease the risk of any site fractures (for TT versus TC \(+\) CC, OR \(=\) 0.813, 95% CI \(=\) 0.704–0.938, \(P = 0.005\); for T allele versus C allele, OR \(=\) 0.885, 95% CI \(=\) 0.792–0.989, \(P = 0.032\)). However, there was no significant association of LCT 13910 C/T polymorphism with BMD at lumbar spine and risk of vertebral fractures under all genetic contrast models (all P values were \({>}0.05\)). The meta-analysis suggests that there are significant effects of LCT 13910 C/T polymorphism on BMD and fracture risk. Large-scale studies with different ethnic populations will be needed to further investigate the possible race-specific effect of LCT 13910 C/T polymorphism on BMD and fracture risk.

Keywords

lactase polymorphism bone mineral density fracture meta-analysis 

Notes

Acknowledgements

This study was funded by the Scientific Research Project of Shanghai Municipal Health and Family Planning Commission (grant no. 201540203).

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Copyright information

© Indian Academy of Sciences 2017

Authors and Affiliations

  1. 1.Central Laboratory, The Fifth People’s Hospital of ShanghaiFudan UniversityShanghaiPeople’s Republic of China
  2. 2.National Institute of Clinical Research, The Fifth People’s Hospital of ShanghaiFudan UniversityShanghaiPeople’s Republic of China
  3. 3.Department of Osteology, The Fifth People’s Hospital of ShanghaiFudan UniversityShanghaiPeople’s Republic of China

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