Non-small cell lung cancer (NSCLC) remains the leading cause of cancer-related mortality worldwide, accounting for approximately 18% of all cancer deaths.1 Despite treatment with platinum-based chemotherapy, the standard of care for first-line therapy, patients with metastatic NSCLC have a median survival of approximately 10 months, and a 5-year survival rate of less than 5%. Immunotherapeutic approaches have demonstrated clinical efficacy in several cancer types, including melanoma, hormone-refractory prostate cancer, and lung cancer.3,4.