CDKN2B-AS1 and nasopharyngeal carcinoma: We next investigated ANRIL expression in five nasopharyngeal carcinoma cell lines (C666-1, SUNE-1, CNE1, CNE2 and HNE-1) and a normal nasopharyngeal cell line, NP69, by qRT-PCR and found higher ANRIL expression in C666-1, SUNE-1, CNE1, CNE2 and HNE-1 cells than in NP69 (Fig. 1D).