Moreover, in the analysis of combining KPNA2 and FOXM1 expressions among HR+HER2- BC patients, we categorized 555 individuals into four groups: high FOXM1 and high KPNA2 (n = 208), high FOXM1 and low KPNA2 (n = 49), low FOXM1 and high KPNA2 (n = 49), and low FOXM1 and low KPNA2 (n = 246). This evidence concerns the gene ERBB2 and breast cancer.