PTGDR and esophageal squamous cell carcinoma: To explore the function of ZFPM2-AS1 on ESCC cell growth, two specific ZFPM2-AS1 shRNAs (sh-ZFPM2-AS1#1 and sh-ZFPM2-AS1#2, both for NR_125796.1) were used for stably silencing ZFPM2-AS1 expression in EC9706 and TE-10 cells (Figure 1D).