ERBB2 and breast cancer: We combined different types of omics data to classify any two subtypes of breast cancer including: (1) luminal A versus luminal B, (2) luminal A versus TNBC, (3) luminal A versus HER2 (+), (4) luminal A versus Unclear, (5) luminal B versus TNBC, (6) luminal B versus HER2 (+), (7) luminal B versus Unclear, (8) TNBC versus HER2 (+), (9) TNBC versus Unclear, (10) HER2 (+) versus Unclear.