FCGR1CP and nasopharyngeal carcinoma: To validate the RNA-Seq data, expression of CYP2B7P, CYP2F2P and CYP4F26P that were involved in arachidonic acid metabolism, as well as IGHV3–69-1 and FCGR1CP participating in Fc gamma related immune system were detected by qRT-PCR in 10 pairs of NPCs and their paracancerous samples, as well as in NPC cell lines (HNE1, CNE1 and CNE2) and NP69 normal human nasopharyngeal epithelial cell line.