The trophoblast cell-surface antigen 2 (Trop2), carcinoembryonic antigen cell adhesion molecule 5 (CEACAM5), erythropoietin-producing hepatocellular carcinoma receptor A10 (EphA10), EpCAM, EGFR, and mesothelin are potential TAAs for TNBC; however, it is difficult to identify TAAs that are specifically expressed on tumor cells, especially CSCs. The gene discussed is TACSTD2; the disease is neoplasm.