ERBB2 and breast cancer: Similar results were obtained when we compared the protein expression pattern of TBC1D9 using a different online BC dataset (UALCAN) consisting of normal (n = 18), luminal (n = 64), HER2 (n = 10), and triple-negative (n = 16) breast cancers, except for HER2, where TBC1D9 expression was similar to TNBC (Figure 1E).