Figure 6.

COP1 expression is a positive prognostic factor for recurrence-free survival of patients with breast cancer. (A) Univariate survival method (Kaplan-Meier method) of patients with breast cancer indicates a strong positive prognostic value of COP1 expression (P = .006, log-rank test). (B) Multivariate survival analysis (proportional hazard method) shows a positive, independent prognostic importance of COP1 expression (P < .05, likelihood ratio test), in addition to the independent prognostic impact of tumor diameter and lymph node status. HR, hazard ratio.