By univariate Cox regression analysis, VWF:Ag levels >200 IU/dL (cHR 2.5; 95% CI: 1.2–5.1), age >60 years at time of surgery (cHR 2.6; 95% CI: 1.4–4.9), preoperative KPS <70 (cHR 2.5; 95% CI: 1.2–5.5), a tumor volume >25 cm3 (cHR 2.1; 95% CI: 1.1–4.2), and wild‐type IDH1/2 (cHR 4.8; 95% CI: 1.3–16.9) resulted risk factors of decreased survival. This evidence concerns the gene IDH1 and neoplasm.