Fig. 1.

Identification of the prognostic PCG-lncRNA signature in the training dataset. a Volcano plot of the survival associated lncRNAs and PCGs in univariate cox regression analysis. b The random survival forest analysis of the survival related 707-gene set in postsurgical GBM patients. c, d The important score of selected PCGs or lncRNAs which were calculated by random survival forest analysis. e The 11 genes with largest AUC (k = 1, 2, … 12, k represents the gene number in the corresponding signature) were shown in the plot. f After calculating the AUC of 4095 signatures, the prognostic PCG-lncRNA signature with biggest predictive power (AUC = 0.78) was screen out