AGO2 and esophageal squamous cell carcinoma: Ago2‐RIP experiment revealed that miR‐2355‐5p was the highest enriched miRNAs in all investigated miRNAs in ESCC cells when WDFY3‐AS2 was overexpressed, and further investigation revealed that miR‐2355‐5p was a direct target of WDFY3‐AS2 in ESCC cells.