Fig. 2

The PCG-lncRNA signature predicts survival of postoperative GBM patients in the training, test and independent validation set. Kaplan–Meier survival curves classify training-set patients (n = 76) (a) test-set patients (n = 77) (b) and independent validation set (n = 80) (c) into high- and low-risk groups by the PCG-lncRNA signature. Shorter survival time was noted in GBM patients with higher risk-scores in the training (d), test (e) and independent validation (f) datasets