Only 1 patient had an objective response (ORR: 9%), but repeat analysis of this patient’s tumor definitively showed the original report of an EGFR mutation to be erroneous....Pembrolizumab’s lack of efficacy in TKI naïve, PD-L1+, EGFR-mutant patients with advanced NSCLC, including those with PD-L1 expression ≥50%, suggests that it is not an appropriate therapeutic choice in this setting.