Study of Dato-DXd Plus Pembrolizumab vs Pembrolizumab Alone in the First-line Treatment of Subjects With Advanced or Metastatic NSCLC Without Actionable Genomic Alterations

The primary objective of the study is to compare the efficacy of Dato-DXd and pembrolizumab with pembrolizumab alone in terms of either Progression Free Survival (PFS) or Overall Survival (OS) for participants with advanced or metastatic NSCLC without actionable genomic alterations whose tumor has high programmed death-ligand 1 (PD-L1) expression (tumor proportion score; TPS ≥50%) and who have not previously received systemic therapy for advanced or metastatic NSCLC. Eligible participants will be randomized in a 1:1 ratio to the control arm (pembrolizumab alone) or the experimental arm (Dato-DXd and pembrolizumab). The study will be divided into 4 periods: Tissue Screening Period, Screening Period, Treatment Period, and Follow-up Period.