Fig. 2

a Kaplan Meier survival curve of recurrence-free survival according to OX40 expression in recurrent cancer biopsies, Impact of OX40+ expression by tumor cells in recurrent cancer biopsies on recurrence-free survival in patients with high grade ovarian carcinoma. Kaplan-Meier recurrence-free survival curve was split according to OX40+ expression in patients bearing high grade ovarian carcinoma as indicated. Cut-off value established by regression tree analysis was 12.5 cells/punch. Blue line indicates to tumors with low OX40+ expression and red line refers to tumors with high OX40+ expression. b Impact of OX40+ expression by tumor cells in recurrent cancer biopsies on overall survival in patients with high grade ovarian carcinoma. Kaplan-Meier overall survival curve was split according to OX40+ expression in patients bearing high grade ovarian carcinoma as indicated. Cut-off value established by regression tree analysis was 12.5 cells/punch. Blue line indicates to tumors with low OX40+ expression and red line refers to tumors with high OX40+ expression.