To explore the function of MAGEA12 in breast cancer, we used small interfering RNA (siRNA) specific for this gene (siMAGEA12) to suppress the endogenous MAGEA12 expression in the cell lines that expressed MAGEA12 at high levels (i.e., MDAMB468 and SKBR3) and then subjected these cells to RNA-seq (Figure 3 and Table S2). This evidence concerns the gene MAGEA12 and breast cancer.