FOXM1 and nasopharyngeal carcinoma: To further test our hypothesis, we silenced FOXM1 expression using short hairpin RNAs (shRNAs) in HONE‐1 and C666‐1 NPC cell lines, which have a relatively high endogenous expression of FOXM1, and transfection efficiency was examined via western blotting and qPCR (Figure 1B).