KM survival curves showed that low-expressed MRPL20, MRPL12, AURKAIP1, NDUFB7, ATP5F1D, and BGN were in BC patients were correlated with a poor survival trend, whereas low-expressed COL4A1 and VWF were related to a significant survival advantage (Figs. 2A–2H). This evidence concerns the gene COL4A1 and breast cancer.