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. 2017 Feb 2;8(26):42214–42225. doi: 10.18632/oncotarget.15031

Figure 1.

Figure 1

A. A boxplot PD-L1 expression in patients with WHO grad II, III and glioblastoma multiforme (WHO grade IV). B. A boxplot of PD-L1 expression in all expression subclasses define by Verhaak et al., 2010 of high-grade gliomas (glioblastoma multiforme). C-D. Survival Analysis of the TCGA database and Freiburg cohort. PD-L1 high vs low was determinate by the mean expression +/− standard deviation. Patients of the Freiburg cohort with outstanding events were censored and marked by a cross. *** p<0.001, ** p=0.01, *p<0.05.