Fig. 5From: The efficacy and safety of combination of PD-1 and CTLA-4 inhibitors: a meta-analysisForest plot of risk ratio (RR). Relative objective response rate (ORR) of α-CTLA-4 plus α-PD-1 combination treatment compared with other treatments in the high PD-L1 expression status (a) and low PD-L1 expression status (b). CI: confidence intervalBack to article page