Fig. 2From: Primary tumor site is a useful predictor of cetuximab efficacy in the third-line or salvage treatment of KRAS wild-type (exon 2 non-mutant) metastatic colorectal cancer: a nationwide cohort studyKaplan-Meier analysis of time to treatment discontinuation and overall survival. Kaplan-Meier analysis of time to treatment discontinuation (a) and overall survival (b) among patients who received cetuximab as salvage therapy for advanced KRAS wild type (exon 2 non-mutant) CRC. Patients were divided according to primary tumor site (left side: splenic flexture to rectum; right side: cecum to hepatic flexture). The P values were conducted using the log-rank testBack to article page