ERBB2 and breast cancer: In the case of breast cancer, both clinical marker (ER/PR/HER2 Triple Negative [TNBC], ER Positive [ER+], HER2 positive [HER2+]) and gene expression (Basal A [BaA_subtype], Basal B [BaB_subtype], Her2 [Her2_subtype], Luminal [Lum_subtype]) based classifications [27] were incorporated.