Median levels of ANG, ANGST, 8-iso-PGF2α, SNCG, and IL-13 were 11.3-fold, 6.1-fold, 1.7-fold, 1.2-fold, and 1.8-fold higher, respectively, in the subgroup of recurrent BC patients compared with the control group. This evidence concerns the gene IL13 and breast cancer.