The majority of the tumours, 111 (62%), belonged to the Luminal A subtype, 37 (21%) to Luminal B HER2-negative, 14 (8%) to Luminal B HER2-positive, 13 (7%) to TNBC, and 3 (2%) to the HER2-positive subtype. This evidence concerns the gene ERBB2 and neoplasm.