Toripalimab
DrugA humanized IgG4 monoclonal antibody against programmed cell death protein 1 (PD-1). The recommended dosage is 240 mg administered intravenously on Day 1 of each 3-week cycle (q3w). Treatment continues until disease progression, unacceptable toxicity, death, withdrawal of consent, or investigator decision. It is used in combination with chemotherapy (etoposide and platinum-based drugs) as per routine clinical practice.