In breast cancers, we found significant upregulation of KIFC1 (Figure 2A), AURKB (Figure 2B), BIRC5 (Figure 2C), and CDCA8 (Figure 2D) in tumor samples of both the GEPIA (Figure 2A–D) and UALCAN datasets, compared to normal samples. This evidence concerns the gene BIRC5 and breast cancer.