AGO2 and nasopharyngeal carcinoma: We detected high expression of AGO2 in the 32 of 37 NPC tissues (86.5 %), but in the 10 of 18 non-cancerous nasopharyngeal tissues (55.5 %) (χ2 = 6.42, P = 0.011; Fig. 1 and Additional file 1: Table S8).