Prognostic impacts of the combined positive score and the tumor proportion score for programmed death ligand-1 expression by double immunohistochemical staining in patients with advanced gastric cancer

ConclusionsCPS was shown to be a more useful assessment method of determining PD-L1 expression than TPS as a prognostic biomarker. This suggests that the total number of PD-L1-expressing cells, including tumor and immune cells, is a more sensitive prognostic biomarker than the number of PD-L1-expressing tumor cells in GC.
Source: Gastric Cancer - Category: Gastroenterology Source Type: research