Moreover, it is also reported that high expression levels of AURKB, CDC6, and ECT2 suggest a poor prognosis for breast cancer (Mahadevappa et al., 2017; Daulat et al., 2019; Huang et al., 2019; Xiu et al., 2019), whereas we only found that CDC6 was negatively positively related to overall survival, and we consider that it is also the different datasets and analysis methods that cause the disparity. The gene discussed is CDC6; the disease is breast cancer.