ZFPM2 and esophageal squamous cell carcinoma: Further, we detected the expressions of two transcripts (NR_125796.1 and NR_125797.1) of ZFPM2-AS1 in ESCC cell lines (KYSE-140, KYSE-30, EC9706 and TE-10), and human normal esophageal epithelial cell line (HET-1A) was taken as a reference.