Tong et al. [148] analyzed the levels of ten lncRNAs in 48 plasma samples and found that POU class 3 homeobox 3 (POU3F3), HNF1A-AS1, and SPRY4-IT1 were markedly higher in ESCC patients compared to healthy controls. Here, POU3F3 is linked to esophageal squamous cell carcinoma.