Clinical Research Directory

Inclusion Criteria: * (1)Inoperable stage III or IV NSCLC (AJCC 8th edition TNM staging) confirmed by pathological histology or cytology.(2)Received first - line immunotherapy (PD - 1/PD - L1 inhibitors) combined with chemotherapy, and driver genes are negative.(3)There is at least one measurable lesion in the lungs on CT imaging (RECIST 1.1).(4)Have complete clinical data.(5)The patient or the authorized family member gives informed consent. Exclusion Criteria: * (1)Have gene mutations such as EGFR/ALK/ROS1 and have not received standardized targeted therapy.(2)Have a second primary malignant tumor concurrently.(3)Have been infected or used antibiotics within 7 days before blood sampling.(4)Have severe abnormalities in the functions of organs such as the heart, liver, lungs, kidneys, and bone marrow.(5)Have other autoimmune diseases and endocrine and metabolic diseases concurrently.