APC and gastric cancer: Zhao et al. indicated that not only the promoters of Wnt inhibitory factor 1 (WIF1), APC, and NLK are highly methylated in nasopharyngeal carcinoma and GC cell lines, but also WIF1 and APC are also targeted and downregulated by EBV miR-BART19-3p, leading to an increase in the cellular proliferation.