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Epidermal growth factor receptor (EGFR) codon 521 G/A or A/A genotypes in KRAS wild‐type metastatic colorectal carcinoma patients are associated with longer progression‐free as well as overall survival. (A) Progression‐free survival curves of 112 metastatic colorectal carcinoma patients with different EGFR codon 521 genotypes were plotted by the Kaplan–Meier method (P = 0.001; log–rank test). (B) A similar method was used to plot overall survival curves (P = 0.001; log–rank test).
