The study also showed that KCNH2 was significantly overexpressed in anaplastic astrocytoma and anaplastic oligodendroglioma (Fig 6) [36] Similarly, in the study conducted by French, KCNH2 was also found to be significantly overexpressed and was ranked among the top 9–15% overexpressed genes in anaplastic oligoastrocytoma and anaplastic oligodendroglioma [37]. This evidence concerns the gene KCNH2 and anaplastic astrocytoma.