In contrast, cortical regions from IID-negative patients showed lower Glut/Cre ratios compared to healthy volunteer data, though this difference was not statistically significant (P = 0.1512, two-tailed t-test, Fig. 3F, IID-negative glioma patients: n = 14, healthy controls: n = 5). The gene discussed is SLC2A1; the disease is central nervous system cancer.