Figure 7. Validation of the four prognostic genes. (A–D). Relative mRNA expression of ALDH2, PRKACB, STMN1 and ZNF292 in breast cancer and paracancerous tissues samples. (E–G). Prognostic value of PRKACB, STMN1 and ZNF292 protein levels. Abbreviations: RFS (relapse-free survival)