Genetic analysis of human GBM has shown frequent and diverse alterations in the IDH1 gene among others, which lead to a reclassification of GBM as IDH-mutant or IDH-wild type, with IDH-mutant having better prognosis (Chin et al., 2008; Parsons et al., 2008; McFaline-Figueroa and Lee, 2018). The gene discussed is IDH1; the disease is glioblastoma.