Whilst the independent prognostic value of TIL-Bs among TNBC and HER2-enriched breast cancers were more consistently reported [30,31,32,35], studies with mixed TNBC and non-TNBC subtypes showed more varied findings [33,34,41], although most studies indicated that the prognostic relevance was independent of hormone receptors status and HER2 status. This evidence concerns the gene ERBB2 and breast cancer.