ERBB2 and triple-negative breast carcinoma: Multiple subtypes of breast cancer were selected as research subjects in this study, including four invasive subtypes (Luminal A, Luminal B, HER-2 enriched, and Triple Negative Breast Cancer (TNBC) cases previously classified by immunohistochemical staining) and Ductal Carcinoma in situ (DCIS) cases (Table 1).