Sun P et al. studied the expression levels of MCM3AP-AS1 and miR-34a in NPC tissues and paracancerous tissues of 55 NPC patients, and found that the expression levels of miR-34a were significantly lower and those of MCM3AP-AS1 were significantly higher in NPC tissues compared with paracancerous tissues, and the expression of both was negatively correlated. Here, MCM3AP is linked to nasopharyngeal carcinoma.