MAP3K3 expression was much higher in nasopharyngeal carcinoma cell lines (CNE‐1, CNE‐2, HONE‐1, HNE‐1, C666‐1 and SUNE‐1) when compared to that in nasopharyngeal epithelial cell line NP69 (Fig. 3A). This evidence concerns the gene MAP3K3 and nasopharyngeal carcinoma.