Cohort 1 (STRESS-LUNG-1):
Inclusion Criteria:
1. Age ≥ 18 years;
2. Histologically confirmed diagnosis of NSCLC;
3. Unresectable locally advanced, metastatic, or recurrent stage ⅢB-Ⅳ based on AJCC TNM staging 8th edition;
4. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;
5. Systematic treatments naive ( e. g., chemotherapy, anti-angiogenic drugs, targeted drugs, and immunotherapy );
6. Presence of at least one measurable lesion according to the Response Evaluation Criteria in Advanced Solid Tumors version 1.1 (RECIST v1.1) ;
7. Receiving PD-1/PD-L1 inhibitors monotherapy or combination with chemotherapy;
8. Informed and agreed to participate in the study;
Exclusion Criteria:
1. Epidermal growth factor receptor (EGFR)-sensitizing mutation and/or anaplastic lymphoma kinase (ALK) gene and/or ROS proto-oncogene 1 (ROS1) fusion-positive;
2. Combined with other malignant tumors in the past 3 years;
3. Concurrent acute or chronic psychiatric disorders;
4. Current receiving anti-depressive or anti-anxiety therapy;
5. Previous treatment with other clinical drug trials;
6. Patients with symptomatic brain metastasis;
7. Can't cooperate with psychological scale assessment;
Cohort 2 (STRESS-LUNG-2):
1. Age ≥ 18 years；
2. Pathologically diagnosed as small cell lung cancer；
3. Unresectable locally advanced, metastatic, or recurrent stage Ⅲ-Ⅳ based on AJCC TNM staging 8th edition;
4. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;
5. Systematic treatments naive ( e. g., chemotherapy, anti-angiogenic drugs, targeted drugs, and immunotherapy );
6. Presence of at least one measurable lesion according to the Response Evaluation Criteria in Advanced Solid Tumors version 1.1 (RECIST v1.1) ;
7. Receiving PD-1/PD-L1 inhibitors monotherapy or combination with chemotherapy;
8. Informed and agreed to participate in the study;
Exclusion Criteria:
1. Combined with other malignant tumors in the past 3 years;
2. Concurrent acute or chronic psychiatric disorders;
3. Current receiving anti-depressive or anti-anxiety therapy;
4. Previous treatment with other clinical drug trials;
5. Patients with symptomatic brain metastasis;
6. Can't cooperate with psychological scale assessment;
Cohort 3 (STRESS-LUNG-3):
1. Age ≥18 years ；
2. Pathologically diagnosed as non-small cell lung cancer;
3. Resectable clinical stage IB-IIIB based on AJCC TNM staging 8th edition;
4. At least one measurable lesion can be evaluated according to the RECIST 1.1 standard；
5. Systematic treatments naive ( e. g., chemotherapy, anti-angiogenic drugs, targeted drugs, and immunotherapy );
6. Receiving PD-1/PD-L1 inhibitors combined with chemotherapy as neoadjuvant therapy.
6\. Cardiopulmonary function can withstand surgery; 7. Informed and agreed to participate in the study;
Exclusion Criteria:
1. Epidermal growth factor receptor (EGFR)-sensitizing mutation and/or anaplastic lymphoma kinase (ALK) gene and/or ROS proto-oncogene 1 (ROS1) fusion-positive;
2. Combined with other malignant tumors in the past 3 years;
3. Concurrent acute or chronic psychiatric disorders;
4. Current receiving anti-depressive or anti-anxiety therapy;
5. Previous treatment with other clinical drug trials;
6. Can't cooperate with psychological scale assessment;
Cohort 4 (STRESS-LUNG-4):
1. Age ≥18 years;
2. Pathologically diagnosed as non-small-cell lung cancer；
3. Pathologically stage conformed as early stage of IA-IIIA
4. Available for tumor tissue samples；
5. Systematic treatments naive ( e. g., chemotherapy, anti-angiogenic drugs, targeted drugs, and immunotherapy );
6. Receiving radical surgery;
7. Informed and agreed to participate in the study;
Exclusion Criteria:
1. Combined with other malignant tumors in the past 3 years;
2. Concurrent acute or chronic psychiatric disorders;
3. Current receiving anti-depressive or anti-anxiety therapy;
4. Previous treatment with other clinical drug trials;
5. Can't cooperate with psychological scale assessment;
