However, membrane PD-L2 found on tumor cells was not associated with baseline peripheral blood markers (white blood cells, absolute neutrophil, lymphocyte, monocyte, and eosinophil counts, serum C-reactive protein, and serum Lactate Dehydrogenase [LDH], levels) in lung adenocarcinoma patients who underwent primary surgery. This evidence concerns the gene PDCD1LG2 and lung adenocarcinoma.