Seventy one tumours were ER +ve HER2 -ve (luminal A), 15 ER +ve HER2 +ve (luminal B), 9 ER -ve PR -ve HER2 +ve (HER2 overexpressing) and 15 ER -ve PR -ve HER2 -ve (basal-like). The gene discussed is ERBB2; the disease is neoplasm.