The KMO mRNA expression in tissue samples from patients with neurological diseases was significantly lower compared with patients with astrocytoma (0.13 × 106 ± 0.086 × 106 vs. 140.9 × 106 ± 137.4 × 106; p = 0.03; Figure 3A). This evidence concerns the gene KMO and astrocytoma (excluding glioblastoma).