“…4 million patients die every year, making it the leading cause of death of Chinese residents due to malignant tumors (1). Lung cancer falls into small cell lung cancer and non-small cell lung cancer (NSCLC) according to pathological classification, among which NSCLC takes the proportion of 85% of lung cancer (2). Due to the atypical early clinical symptoms, most sufferers were in the advanced stage when clinically diagnosed, and lost the chance of surgical resection, thus leading to a low 5-year overall survival rate (3,4).…”