Strikingly, the expression of PTEN in NPC was highly inversely correlated with the expression of either BART1-5p (r=−0.5205, P<0.0001; Fig. 3f, right panel) or BART1-3p (r=−0.3687, P=0.0007; Fig. 3f, left panel). The gene discussed is ARL2BP; the disease is nasopharyngeal carcinoma.