Gerber et al. also reported the results of erlotinib versus radiation therapy for brain metastases in 110 patients with EGFR-mutant lung adenocarcinoma and found that there was no significant difference in OS between the WBRT and erlotinib groups (median, 35 vs. 26 months; P = 0.62) [27]. Here, EGFR is linked to lung adenocarcinoma.