FASLG and nasopharyngeal carcinoma: EBV infection can induce the expression of a variety of miRNAs including microRNA-21, and scholars have found that Epstein-Barr virus-encoded LMP1 (latent membrane protein 1) can increase miR-21, negatively regulate pro-apoptotic factor procedural cell death 4 (PDCD4) and Fas ligand (Fas-L) increase resistance to cisplatin treatment in nasopharyngeal carcinoma cells 60.