Metastatic Non-Small Cell Lung Cancer Treated With Chemotherapy Combined With Concurrent Radiation Therapy to the Primary Tumor: Characterization of Long-term Survivor and Prognostic Value of Lung Immune Prognostic Index in Two Prospective Studies

For mNSCLC patients treated with chemotherapy in combination with thoracic radiation, LTS patients had good LIPI and receiving higher radiation dose to primary tumor. LIPI might be useful for identifying a subgroup that may benefit from thoracic radiotherapy with concurrent chemotherapy.