Patients with ≤50% PD-L1 expression on tumor samples had a significantly longer OS in the Kaplan-Meier log-rank test analysis (p = 0.037), although the hazard ratio for OS did not reach a significant level (HR 0.275; 95% CI 0.073–1.03; p = 0.055) (Table 3). This evidence concerns the gene CD274 and neoplasm.