LncRNA XIST (33, 75) Overexpression predicts poor PFS and poor OS in CRC patients.PVT1 is the most frequently studied lncRNA as a prognostic biomarker, and 2 publications have shown that upregulation of PVT1 is associated with poorer overall survival (OS) and disease-free survival (DFS) (54, 76). This evidence concerns the gene PVT1 and colorectal carcinoma.