KCNJ9 and glioma: We constructed a PPI network of the top 50 genes positively and negatively correlated with TGIF2 respectively and identified 10 hub genes (HDAC1, CASP3, REST, HMG20B, FZD7, GNAI3, FZD1, EPHB4, KCNJ9, SCRT1) which have good diagnostic ability in glioma.