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This is an observational retrospective study. The primary objective is to investigate the expression and potential prognostic role of Programmed Death Ligand 1 (PD-L1) in tumor samples from 350 patients with early stage treatment-naive non-small-cell lung cancer (NSCLC).
Tissue samples were embedded in a tissue microarray. PD-L1 will be studied by immunohistochemistry using the SP263 antibody. Stained samples will be evaluated independently by two operators. A tumor will be defined as positive when = or >50% of tumor cells express the ligand.
The investigators will investigate the relationship between PD-L1 protein expression and overall survival and other clinical characteristics with appropriate statistical methods.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| immunohistochemistry | Other | Samples will be stained using the SP263 antibody clone against PD-L1 |
| Measure | Description | Time Frame |
|---|---|---|
| Expression | The study will investigate PD-L1 protein expression by immunohistochemistry in tumor samples from early stage NSCLC | 15 days |
| Prognostic value | The correlation between PD-L1 protein expression by immunohistochemistry and overall survival will be studied | 15 days |
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Inclusion Criteria:
Exclusion Criteria:
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350 patients with stagi I-III NSCLC
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| ID | Term |
|---|---|
| D002289 | Carcinoma, Non-Small-Cell Lung |
| ID | Term |
|---|---|
| D002283 | Carcinoma, Bronchogenic |
| D001984 | Bronchial Neoplasms |
| D008175 | Lung Neoplasms |
| D012142 | Respiratory Tract Neoplasms |
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| ID | Term |
|---|---|
| D007150 | Immunohistochemistry |
| ID | Term |
|---|---|
| D006651 | Histocytochemistry |
| D003584 | Cytological Techniques |
| D019411 | Clinical Laboratory Techniques |
| D019937 | Diagnostic Techniques and Procedures |
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Formalin fixed paraffin embedded specimen were collected from 350 patients who underwent surgical resection of early stage NSCLC. Tumors samples were included in a tissue microarray.
| D013899 |
| Thoracic Neoplasms |
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
| D003933 | Diagnosis |
| D006652 | Histological Techniques |
| D008919 | Investigative Techniques |
| D007158 | Immunologic Techniques |