Fig. 2From: Predictive biomarkers for the efficacy of peptide vaccine treatment: based on the results of a phase II study on advanced pancreatic cancerOverall survival according to a biomarker. Overall survival rates of patients in the HLA-A*2402-matched group (a) and HLA-A*2402-unmatched group (b) were analyzed by the Kaplan-Meier method for low (dotted line) or high (solid line) expression levels of PD-1 on CD4+ T cellsBack to article page