The mRNA expressions in the MC group were higher than those in the BC group [group difference:TLR2 (6.521, 95% CI: 3.713 to 9.329, p < 0.001), TLR4 (6.401, 95% CI: 4.613 to 8.190, p < 0.001), MyD88 (8.420, 95% CI: 6.225 to 10.61, p < 0.001), and NF-κB (8.823, 95% CI: 7.076 to 10.570, p < 0.001)]. This evidence concerns the gene TLR2 and breast cancer.