ALDH2, ALDH5A1, ALDH6A1, ALDH1L2, ALDH1B1, ALDH18A1, ALDH1A1, ALDH8A1, ALDH1B1 were found to be favorable factor for glioma patients with a hazard ratio (HR) <1. This evidence concerns the gene ALDH1L2 and central nervous system cancer.