ERBB2 and ductal breast carcinoma in situ: The TMA blocks contained tumor tissue samples collected from 130 patients with all subtypes (basal, luminal A, luminal B, and HER2-positive) or tissue types (ductal carcinoma in situ breast cancer (DCIS) and lobular carcinoma in situ (LCIS)) at all stages, as well as normal tissues (Table A1).