SKP2 and invasive ductal breast carcinoma: The Kaplan-Meier curve and log-rank test analyses revealed that cytoplasmic Skp2 expression was significantly associated with DFS (log rank = 5.091, p = 0.024) (Figure 2A), and OS (log rank = 7.892, p = 0.005) (Figure 2B) in all breast invasive ductal carcinoma patients.