Additionally, in order to find out about the nature of this phenomenon, the authors analyzed the glow intensity of two glioma cell lines in vitro: NHAE6E7hTERTIDH1mut, which was transformed by mutant IDH1, and NHAE6E7hTERTRas, which was transformed by H-Ras (wild-type IDH1 model). This evidence concerns the gene IDH1 and glioma.