Receiver operating characteristics (ROC) curve analysis and survival analysis of lncRNAs in PC. (A and B) Receiver operating characteristics (ROC) curve analysis of LINC00346, LINC00578, LINC00673, LINC00671, LINC00261, and SNHG9 in PC. (C and D) Survival analysis of LINC00346, LINC00578, LINC00673, LINC00671, LINC00261, and SNHG9 in the PC patients (*P < 0.01, **P < 0.05, ***P < 0.001).