By survival analysis, the expression of KRAS, MAP3K1, and MAPK8 genes correlated with survival rate, while BC patients with low expression of KRAS (p < 0.0001), MAP3K1 (p < 0.0001), and MAPK8 (p = 0.00064) had a significantly higher survival rate than those with high expression, while the expression of RASGRP1 gene (p = 0.260) and SOS2 gene (p = 0.210) showed no significant relationship with survival rate (Figure 5). This evidence concerns the gene MAPK8 and breast cancer.