Of these, 11 appeared to be unfavourable prognostic genes (i.e., CTPS, CDCA7, GSDMC, LRP8, TUBA1C, CENPN, PRAME, SLC7A11, GINS4, DSCC1, RCOR2) as their overexpression was found to be associated with poorer OS; this result was confirmed using another BC dataset collection (http://kmplot.com/analysis/). This evidence concerns the gene RCOR2 and breast cancer.