Multivariable Cox regression analysis showed that the PCG-lncRNA risk score was significantly associated with overall survival when adjusted the molecular features including MGMT promoter and IDH1 mutation in the 70 TCGA GBM patients (High-risk group vs. Low-risk group, HR = 3.71, 95% CI 1.80–7.62, P < 0.001). The gene discussed is IDH1; the disease is glioblastoma.