Ramucirumab Plus Pembrolizumab vs Usual Care for Treatment of Stage IV or Recurrent Non-Small Cell Lung Cancer Following Immunotherapy, Pragmatica-Lung Study

PRIMARY OBJECTIVE: I. To compare overall survival (OS) in participants previously treated with platinum-based chemotherapy and immunotherapy for stage IV or recurrent non-small cell lung cancer (NSCLC) randomized to pembrolizumab and ramucirumab versus standard of care. SECONDARY OBJECTIVE: I. To summarize reports of serious and unexpected high-grade (\>= grade 3) treatment-related adverse events determined by the treating physician within each treatment arm. OUTLINE: Patients are randomized to 1 of 2 arms. ARM A: Patients receive chemotherapy per standard of care on study. ARM B: Patients receive ramucirumab intravenously (IV) and pembrolizumab IV on study.