EGFR and non-small cell lung carcinoma: For BMs in EGFR-mt patients, single metastasis, compared with multiple metastases, exhibited a positive impact on patient survival (P = .0009, log-rank test with Bonferroni correction) but not in EGFR-wt NSCLC patients (P = 1.00, log-rank test with Bonferroni correction).