CD274 and lung carcinoma: In univariable Cox regression analysis, PD‐L1 positivity was associated with lower lung cancer‐specific (univariable HR = 0.23; 95% CI=0.056–0.64; P = 0.0028) and overall (univariable HR=0.28; 95% CI = 0.11–0.60; P = 0.0005) mortality (Table 2).