SLC2A1 and glioblastoma: However, Glut/Cre ratios were again not different between patients with a glioblastoma and a history of pre-operative seizures (mean = 0.18 ± 0.19, n = 8) and glioblastoma patients without seizures (mean = 0.16 ± 0.03, n = 3, P = 0.8411, two-tailed t-test, Fig. 6D).