Our analyses revealed that the relapse-free survival (RFS) of BRCA, HER2 positive, luminal A, and luminal B did not significantly correlate with MYH9 expression except for triple-negative breast cancer (TNBC) (p = 0.029) (Figure S7A–D and Figure 6D). The gene discussed is ERBB2; the disease is triple-negative breast carcinoma.