TUG1 and esophageal squamous cell carcinoma: Furthermore, TUG1 expression is higher in TE-1 derived cisplatin (DDP)-resistant (TE-1/DDP) cells (1 μg/mL for 48 h) compared to TE-1 cells [57], suggesting that high TUG1 expression was significantly implicated with chemotherapy resistance and inversely correlated with overall survival of ESCC patients [56] (Table 1).