NRP1 and glioblastoma: Univariate Cox analysis found that age, IDH status, TERT status, ATRX status, and NRP1 were related to GBM patient prognosis, and the risk value increased by 1.052, 0.144, 0.582, 2.936, 0.180, and 1.294, respectively, for each additional unit (S2 Table).