Figure 4

Kaplan-Meier survival analysis according to EGFR protein expression determined as H-score of continuous immunohistochemical staining (cH-score) and total immunohistochemical staining (tH-score) in clear cell renal cell carcinoma (CCRCC): (a) The log-rank test showed significantly shorter overall survival in patients with tumors showing high continuous EGFR protein expression that was above median H-score values (p = 0.046). The 5-year survival rate was 59% for patients whose tumors showed low EGFR cH-score vs. 40% for patients whose tumors showed high EGFR cH-score; (b) on the contrary, the log-rank test showed no significant association between EGFR tH-score and survival (p = 0.074). The 5-year survival rate was 57% for patients whose tumors showed low EGFR tH-score and 40% for patients whose tumors showed high EGFR tH-score.