%0 Journal Article %A Paz-Ares, L %A Spira, A %A Raben, D %A Planchard, D %A Cho, B C %A Özgüroğlu, M %A Daniel, D %A Villegas, A %A Vicente, D %A Hui, R %A Murakami, S %A Spigel, D %A Senan, S %A Langer, C J %A Perez, B A %A Boothman, A-M %A Broadhurst, H %A Wadsworth, C %A Dennis, P A %A Antonia, S J %A Faivre-Finn, C %T Outcomes with durvalumab by tumour PD-L1 expression in unresectable, stage III non-small-cell lung cancer in the PACIFIC trial. %D 2020 %U http://hdl.handle.net/10668/15280 %X In the PACIFIC trial, durvalumab significantly improved progression-free and overall survival (PFS/OS) versus placebo, with manageable safety, in unresectable, stage III non-small-cell lung cancer (NSCLC) patients without progression after chemoradiotherapy (CRT). We report exploratory analyses of outcomes by tumour cell (TC) programmed death-ligand 1 (PD-L1) expression. Patients were randomly assigned (2:1) to intravenous durvalumab 10 mg/kg every 2 weeks or placebo ≤12 months, stratified by age, sex, and smoking history, but not PD-L1 status. Where available, pre-CRT samples were tested for PD-L1 expression (immunohistochemistry) and scored at pre-specified (25%) and post hoc (1%) TC cut-offs. Treatment-effect hazard ratios (HRs) were estimated from unstratified Cox proportional hazards models (Kaplan-Meier-estimated medians). In total, 713 patients were randomly assigned, 709 of whom received at least 1 dose of study treatment durvalumab (n = 473) or placebo (n = 236). Some 451 (63%) were PD-L1-assessable: 35%, 65%, 67%, 33%, and 32% had TC ≥25%, PFS benefit with durvalumab was observed across all subgroups, and OS benefit across all but TC %K PACIFIC %K PD-L1 expression %K durvalumab %K immunotherapy %K non-small-cell lung cancer %K stage III %~