VEGFA and glioblastoma: By employing Gene Expression Profiling Interactive Analysis (GEPIA) (http://gepia.cancer-pku.cn/), we found that in GBM tissues (163 tumor tissues and 207 adjacent tissues), transcription of NDRG1 is positively correlated with VEGFA, but not VEGFB or VEGFC, which are two main isotypes of VEGF (Figure 1(a)).