CBX1 and nasopharyngeal carcinoma: To further verify the exact m6A sites of CBX1, we evaluated anti‐m6A antibody‐enriched CBX1 mRNA from normal nasopharyngeal epithelial cells (NP69) and NPC cells (SUNE1, HONE1, and HK1) with m6A‐RIP‐qPCR assays using three different primers, the products of which contained the nine “A” sites.