inhibitors have been approved as a standard therapy for metastatic non-small cell lung
cancer (NSCLC). Although PD-L1 expression serves as a predictive biomarker for the
efficacy of immunotherapy, there are no established biomarkers to predict the expression of
PD-L1. The inflammatory markers C-reactive protein (CRP) and neutrophil-lymphocyte ratio
(NLR) were recently shown to predict the efficacy of nivolumab for NSCLC patients …