EGFR and neoplasm: As shown in Table 4, the mutated-EGFR tumor had a significantly shorter MTSBM than the WT-EGFR one did (for all-stage disease, 31.6 months vs. not reached (NR), P of log-rank test = 0.043; for stage IIIB-IV disease, 23.5 months vs. NR, P = 0.017).