IL6 and glycine encephalopathy: Higher CMD-IL-6 levels were recorded initially (first 12 hours of neuromonitoring) in patients with admission GCE (4,440 pg/mL, IQR 805 to 16,194 pg/mL versus 1,542 pg/mL, IQR 155 to 4,059 pg/mL, P = 0.02) and patients with a CPP of less than 70 mm Hg (n = 9/26, 35%, 16,281 pg/mL, IQR 6,501 to 21,929 pg/mL versus n = 17/26, 65%, 3,266 pg/mL, IQR 872 to 8,020 pg/mL; P = 0.03, Figure 3D) and overall in patients developing DCI independent of disease severity, aneurysm securing method, and perilesional probe location (Wald statistic = 5,4, degrees of freedom (df) = 1, P = 0.02, Figure 3B).