Overall survival with immune checkpoint inhibitors across treatment settings and clinical and PD-L1-defined subgroups in advanced esophageal squamous cell carcinoma: a systematic review and meta-analysis of randomized trials
Introduction To quantify overall-survival effects of immune-checkpoint-inhibitor (ICI)-containing regimens by treatment line and to evaluate whether clinical characteristics or PD-L1 definitions modify relative treatment benefit in advanced esophageal squamous cell carcinoma (ESCC). Methods PubMed, Embase, the Cochrane...