Recent studies have shown that circRNAs derived from the Plasmacytoma Variant Translocation 1 (PVT1) gene (circPVT1) regulate 5-fluorouracil (5-FU) chemosensitivity in esophageal squamous cell carcinoma (ESCC) by modulating the Wnt/β-catenin pathway through the miR-30a-5p/FZD3 axis [39]. Here, PVT1 is linked to esophageal squamous cell carcinoma.