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Current Evidence on the Association between rs3757318 of C6orf97 and Breast Cancer Risk: a Meta-Analysis

  • Hong, Yuan (Department of Clinical Laboratory, Hubei Maternal and Child Health Hospital) ;
  • Chen, Xue-Qin (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Li, Jiao-Yuan (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Liu, Cheng (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Shen, Na (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Zhu, Bei-Bei (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Gong, Jing (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology) ;
  • Chen, Wei (State Key Laboratory of Environment Health (Incubation), Ministry of Education, Key Laboratory of Environment & Health, Ministry of Environmental Protection, Key Laboratory of Environment and Health, and Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology)
  • Published : 2014.10.23

Abstract

Background: A common genetic variant rs3757318, located in intron of C6orf97, was firstly identified to be associated with breast cancer (BC) risk by a genome-wide association (GWA) study. However, subsequent validation studies with different ethnicities have yielded conflicting results. Materials and Methods: We performed a meta-analysis to synthesize all available data for evaluating the precise effect of this variant on BC susceptibility. Results: A total of 8 articles containing 11 studies with 62,891 cases and 65,635 controls were included in this meta-analysis. When compared to the G allele, the rs3757318-A allele was significantly associated with BC risk with the pooled OR of 1.21 (95% CI=1.15 - 1.29, P<0.001) but with obvious between-study heterogeneity (P=0.040). Stratified analysis suggested that diversity of ethnicity along with control source may explain part of the heterogeneity. Similarly, significant associations were also identified in heterozygote, homozygote, dominant and recessive genetic models. Sensitivity and publication bias analyses indicated robust stability of our results. Conclusions: Our present meta-analysis demonstrated that the variant rs3757318 is associated with increased BC risk. Nevertheless, further studies are needed to clarify the underlying biological mechanisms.

Keywords

Breast cancer;risk;rs3757318;C6orf97;meta-analysis

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