SPDEF, TRIM3, HSPB1, SPINT1, EPN3, and LRFN2 were significantly highly expressed in the HER2-positive type than in TNBC (Figure 5, p < 0.05), as the HER2-positive type is reported to have a larger tumor size and higher stage [34,35]. The gene discussed is EPN3; the disease is neoplasm.