In terms of molecular subtype, 16 (69.6%) patients carried the Luminal B subtype (ER-positive and/or PR-positive tumours with negative HER2 and low Ki67 proliferation (<14%)), while 7 (30.4%) patients carried the Luminal A subtype (ER-positive and/or PR-positive tumours with positive/negative HER2 and high Ki67 proliferation (≥14%)) [28]. This evidence concerns the gene ERBB2 and neoplasm.