Cost-Effectiveness of First-Line Pembrolizumab Monotherapy Versus Chemotherapy in High Programmed Death-Ligand 1 Advanced Non-Small Cell Lung Cancer in the Irish Healthcare Setting.

Objectives: This study aimed to assess the cost-effectiveness of pembrolizumab monotherapy in the first-line treatment of advanced non-small cell lung cancer (NSCLC) in adults whose tumors expressed programmed death-ligand 1 (PD-L1) with a tumor proportion score (TPS) ≥ 50% in the Irish healthcare setting.

Methods: Effectiveness inputs were derived from the 5-year analysis of KEYNOTE-024 phase III clinical trial. The intervention was pembrolizumab monotherapy; the comparator was a weighted average of the 5 chemotherapy regimens from the trial.