DDB1 and esophageal squamous cell carcinoma: Recently, the expressions of 3752 circRNAs are detected in ESCC cell line KYSE-150 and radioresistant ESCC cell KYSE-150R, and hsa_circRNA_100367 (gene Symbol DDB1 and CUL4 associated factor 8 (DCAF8), also named hsa_circRNA_0014879) is found to be highly expressed in KYSE-150R cell line [12].