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Folate metabolism gene polymorphisms MTHFR C677T and A1298C and risk for preeclampsia: a meta-analysis

  • Genetics
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Abstract

Objectives

MTHFR C677T and A1298C have been associated with the risk of preeclampsia (PE), but with conflicting results. We performed this meta-analysis to derive a more precise estimation of the association between MTHFR polymorphisms and PE.

Study design

An electronic search of PubMed and Chinese Biomedicine database was conducted to select studies for meta-analysis. 54 case controlled studies containing MTHFR C677T and A1298C gene polymorphisms were chosen, and odds ratio (OR) with confidence interval (CI) was used to assess the strength of this association.

Result

These studies evaluated 7398 cases and 11230 controls for MTHFR C677T. The overall results suggested that MTHFR C677T was associated with the risk of PE. (T vs. C: OR = 1.157, 95 % CI: 1.057-1.266, p=0.002; TT+CT vs. CC: OR=1.165, 95 % CI : 1.049-1.293, P = 0.004; TT vs. CT + CC: OR = 1.371, 95 % CI: 1.153-1.63, p < 0.001). We also evaluated 1103 cases and 988 controls for MTHFR A1298C but could not demonstrate an increased risk of PE for this polymorphism (p=0.667). A symmetric funnel plot, the Egger’s test (p = 0.819) suggested a lack of publication bias.

Conclusion

This meta-analysis supports the idea that MTHFR C677T genotype is associated with increased risk for PE, especially in the case of Asians and Caucasians.

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Authors and Affiliations

  1. Laboratory of Molecular Genetics of Aging & Tumor, Medical Faculty, Kunming University of Science and Technology, Chenggong Campus, 727 South Jingming Road, Kunming, Yunnan, 650500, China

    Xiaoming Wu, Ruoyu Zhou, Jing Liu, Ying Luo & Wenru Tang

  2. First People’s Hospital of Yunnan Province, Kunming, China

    Kunxian Yang, Xiaodan Tang & Yalian Sa

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  1. Xiaoming Wu
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  2. Kunxian Yang
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Correspondence to Ying Luo or Wenru Tang.

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Capsule This meta-analysis showed that MTHFR C677T genotype had increased risk of preeclampsia.

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Wu, X., Yang, K., Tang, X. et al. Folate metabolism gene polymorphisms MTHFR C677T and A1298C and risk for preeclampsia: a meta-analysis. J Assist Reprod Genet 32, 797–805 (2015). https://doi.org/10.1007/s10815-014-0408-8

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