FP07.03 Landscape Heterogeneity of PD-L1 Expression and Immune Cells Predicts Prognosis of Metastatic Non-Small Cell Lung Cancer

Immune microenvironment evolution may occur during tumor progression. The purpose of this study is to quantitatively access the heterogeneity and its significance of PD-L1 expression and immune cells (ICs) during the metastatic progression of non-small cell lung cancer (NSCLC). Matched 64 resected specimens of paired primary tumors (PTs) and metastatic tumors (MTs) were obtained from 28 NSCLC patients. PD-L1 co-expression on tumor cells (TCs)...