RecruitingPhase 3Drug trialA Study to Compare Pharmacokinetics, Efficacy, Safety, and Immunogenicity of MB12 (Proposed Pembrolizumab Biosimilar) to Keytruda® in Non-small Cell Lung Cancer (BENITO Study)This is a randomized, multicenter, multinational, double-blind, integrated pharmacokinetics (PK) and efficacy similarity study to compare the PK, efficacy, safety, and immunogenicity of MB12 versus Keytruda® in combination with pemetrexed-platinum chemotherapy as first-line treatment in patients with metastatic non-squamous NSCLC.