Figure 1. Association between tumor COX2 expression and breast cancer survival.

Kaplan-Meier and log rank test were used to determine cumulative disease-free survival curve of patients with TNBC (n = 147) by COX2 status; when compared with low COX2 tumor expression (n = 96), high COX2 (n = 51) predicted poor survival among patients who had received fractionated radiation doses totaling 50 Gy. P = 0.026. Elevated NOS2 tumor expression had no predictive value in the same patients.