KRAS and breast neoplasm: Figure 5 shows the log2Fc heatmap of K-Ras4A and K-Ras4B in each sample related to the pathological prognostic stages. This outcome indicated that the expression profile of K-Ras4A in breast tumors is distinct in different stages. Statistical correlation studies remained significant when the sub-stages were analyzed related to K-Ras4A (p = 0.03; Fig. 5).