When AKR1C1 expression evaluated by Western blotting in NPC cell lines (namely CNE1, HK1‐EBV, CNE2, SUNE1, HONE1, 5‐8F and S18) and immortalized nasopharyngeal epithelial cells (NP69, SWSX‐1489 and HNEpC), only three NPC cells (CNE1, CNE2 and S18) expressed AKR1C1 (Figure 1C). The gene discussed is AKR1C1; the disease is nasopharyngeal carcinoma.