Review Article

Genetic Polymorphism rs6505162 in MicroRNA-423 May Not Be Associated with Susceptibility of Breast Cancer: A Systematic Review and Meta-Analysis

Table 4

Overall meta-analysis of the association between breast cancer and miR-423 rs6505162 polymorphism.

Genetic modelOR [95 % CI]Z (P value)Heterogeneity of study designAnalysis model
χ2df (P value)I2 (%)

Mir-423 rs6505162 in total population from 12 case control studies [7, 1727] (2,689 cases and 2,980 controls)
Allelic model (C-allele vs. A-allele)1.02 [0.81, 1.28]0.19 (0.85)73.3011 (<0.001)85Random
Recessive model (CC vs. AC + AA)0.99 [0.72, 1.38]0.03 (0.97)82.6011 (<0.001)87Random
Dominant model (AA vs. AC + CC)0.93 [0.72, 1.21]0.52 (0.60)21.4011 (0.03)49Random
Homozygous model (CC vs. AA)1.04 [0.66, 1.65]0.17 (0.87)54.2811 (<0.001)80Random
Heterozygous model (AC vs. AA)1.07 [0.90, 1.28]0.76 (0.45)11.4911 (0.40)4Fixed

Mir-423 rs6505162 in Asian population from 9 case-control studies [1927] (1,880 cases and 1,793 controls)
Allelic model (C-allele vs. A-allele)1.09 [0.82, 1.44]0.58 (0.56)47.228 (<0.001)83Random
Recessive model (CC vs. AC + AA)1.10 [0.75, 1.61]0.47 (0.64)55.748 (<0.001)86Random
Dominant model (AA vs. AC + CC)0.81 [0.63, 1.03]1.72 (0.09)11.918 (0.16)33Fixed
Homozygous model (CC vs. AA)1.20 [0.69, 2.08]0.64 (0.52)29.588(<0.001)73Random
Heterozygous model (AC vs. AA)1.20 [0.92, 1.56]1.35 (0.18)9.048(0.34)11Fixed

Mir-423 rs6505162 in Chinese population from 4 case-control studies [1922] (1,138 cases and 1,017 controls)
Allelic model (C-allele vs. A-allele)1.12 [0.97, 1.30]1.50 (0.13)3.373 (0.34)11Fixed
Recessive model (CC vs. AC + AA)1.13 [0.95, 1.35]1.35 (0.18)4.993 (0.17)40Fixed
Dominant model (AA vs. AC + CC)0.81 [0.54, 1.22]1.00 (0.32)0.393 (0.94)0Fixed
Homozygous model (CC vs. AA)1.29 [0.85, 1.95]1.19 (0.24)0.363 (0.95)0Fixed
Heterozygous model (AC vs. AA)1.15 [0.75, 1.76]0.62 (0.53)1.103 (0.78)0Fixed

Mir-423 rs6505162 in Caucasian population from 3 case-control studies [7, 17, 18] (809 cases and 1,187 controls)
Allelic model (C-allele vs. A-allele)0.87 [0.58, 1.31]0.66 (0.51)16.192 (<0.001)88Random
Recessive model (CC vs. AC + AA)0.75 [0.38, 1.48]0.82 (0.41)17.512 (<0.001)89Random
Dominant model (AA vs. AC + CC)1.11 [0.74, 1.66]0.49 (0.63)5.802 (0.06)66Random
Homozygous model (CC vs. AA)0.75 [0.33, 1.70]0.70 (0.49)16.172 (<0.001)88Random
Heterozygous model (AC vs. AA)0.98 [0.77, 1.24]0.20 (0.84)1.252 (0.54)0Fixed

Mir-423 rs6505162 in female population from 5 case-control studies [1821, 27] (1,356 cases and 1,155 controls)
Allelic model (C-allele vs. A-allele)1.05 [0.77, 1.42]0.29 (0.78)21.544 (<0.001)81Random
Recessive model (CC vs. AC + AA)1.06 [0.66, 1.71]0.24 (0.81)27.484 (<0.001)85Random
Dominant model (AA vs. AC + CC)1.00 [0.77, 1.30]0.02 (0.99)5.864 (0.21)32Fixed
Homozygous model (CC vs. AA)1.08 [0.52, 2.27]0.21 (0.83)21.544 (<0.001)81Random
Heterozygous model (AC vs. AA)0.95 [0.72, 1.26]0.34 (0.73)2.344 (0.67)0Fixed

Abbreviations: mir-423, microRNA-423; OR, odds ratios; 95% CI, 95% confidence interval.