The results of Li et al. (Li et al., 2020b) also showed that circ-ZNF609 was overexpressed in NPC tissues and cell lines, knocking down it inhibited NPC cell proliferation and cell cycle transition, as well as accelerated apoptosis, and the carcinogenic effect was achieved through the circ-ZNF609/miR-188/ELF2 axis. The gene discussed is ELF2; the disease is nasopharyngeal carcinoma.