Five out of seven (71%) basal-like, 8 out of 12 (67%) ErbB2-overexpressing, 1 out of 19 (5%) luminal A, 3 out of 8 (38%) luminal B and 2 out of 13 (15%) normal-like breast tumours were IBC samples. The gene discussed is ERBB2; the disease is breast neoplasm.