Treatment with ICG-001 (0–10 μM) showed a concentration-dependent cytostatic effect in all tested human patient-derived glioma cell lines (PBT017, PBT030, PBT135, PBT144, and PBT147) (Figures 1A, D–F) and all murine-derived glioma cell lines (K-luc, GL261-parental, and GL261.IL13Rα2 engineered) (Figure 1B). This evidence concerns the gene IL13RA2 and central nervous system cancer.