Figure 2.

Correlation of p53 and epidermal growth factor receptor (EGFR) expression with relapse-free survival in 21 stage II patients (11 EGFR-positive vs. 10 EGFR-negative cases) that had undergone a completed resection. The follow-up survey was completed in July 2010. (A) There were 4 recurrences in the EGFR-positive cases, but no recurrence was noted in the negative group. A statistical difference (p<0.05) was noted between the positive (solid line) and the negative cases (dashed line). (B) Relapse-free survival between the two groups (16 p53-positive vs. 5 p53-negative cases) is shown. One relapse was noted in the p53-negative cases (dashed line) and three relapses occurred in the p53-positive cases (solid line), indicating no significant difference (p>0.05).