ERBB2 and triple-negative breast carcinoma: Molecular classification (IHC subtypes) identified Luminal A (Luminal‐A‐like) tumors in most cases (61.7%), followed by Luminal B (Luminal‐B‐like) (20.0%), HER2 (9.5%) and basal‐like (triple negative breast cancer (TNBC)) at 8.7%.