Examining individual breast cancer subtypes, low Kat5 expression significantly correlated with decreased RFS in all subtypes: Luminal A (n = 1933; p = 0.00014), Luminal B (n = 1149; p = 0.000054), Her2 positive (n = 251; p = 0.00062) and Basal (n = 618; p = 0.011) (Fig. 8B–E). This evidence concerns the gene ERBB2 and breast carcinoma.