IDH1 and central nervous system cancer: Regarding patients with IDH mutation and chromosome 1p/19q intact, after Student's t‐test comparison (Table S15), global efficiency was higher in grp‐AE (left glioma, 0.330 ± 0.024; right glioma, 0.392 ± 0.039) than in grp‐AnE (left glioma, 0.277 ± 0.008, p = 0.0462; right glioma, 0.277 ± 0.012, p = 0.0419).