GFAP and neoplasm: The tumors located in the parietal lobe (odds ratio [OR]: 1.96, P = .003, see Figure 1 for the distribution of SAO/EPS rates in different brain areas), those with higher GFAP expression (≥35%, OR: 1.88, P = .05) and more radical EOR (tumor resection vs biopsy [OR: 1.87, P = .001] and GTR vs debulking [OR: 1.64, P = .006]) were also associated with SAO.