The 5 lncRNAs are able to predict overall survival in the training cohort. (A) Kaplan-Meier survival curves, (B) ROC curve for the training cohort, and the AUC value more than 0.7 is considered to be reliable. (C) risk distribution, survival status of patients and (D) heatmap of the 5 lncRNAs expression profiles in the training cohort. The ‘+’ on the survival curves represents the censored data-points. lncRNA, long non-coding RNA; ROC, receiver operating characteristic; AUC, area under ROC curve; OGFRP1, opioid growth factor receptor pseudogene 1; ITGB1-DT, integrin subunit beta 1 divergent transcript; LMO7DN, LIM domain 7 downstream neighbor; NPSR1-AS1, neuropeptide S receptor 1-antisense RNA 1; PRKG1-AS1, protein kinase cyclic GMP-dependent 1-antisense RNA 1.