ZNF609 and nasopharyngeal carcinoma: Circ-ZNF609 depletion represses proliferation and cell cycle transition, and induces apoptosis of NPC cells through modulation of the miR-188/ELF2 axis, providing potential targets for the therapy of NPC.289 Moreover, circCRIM1 is upregulated in highly metastatic NPC cells and tissues, and its overexpression promotes NPC cell metastasis and EMT.