Prognostic value of programmed death-ligand 1 status in Japanese patients with renal cell carcinoma

Programmed death-ligand 1 (PD-L1) positivity is associated with poor prognosis in renal cell carcinoma (RCC). Because the prognostic impact and effect of confounding factors are less known, we investigated the prognostic significance of PD-L1 expression in Japanese patients with recurrent/metastatic RCC who started systemic therapy in 2010-2015.This multicenter, retrospective study recruited patients from 29 Japanese study sites who had prior...