GPX4 and neoplasm: For example, circBCAR3 promotes tumor proliferation by sponging miR-27a-3p (109); TMEM161B-AS1 modulates ferroptosis via the miR-27a-3p/GCH1 axis (110); ARHGEF26-AS1 promotes ferroptosis through the miR-372-3p/ADAM23 pathway (111); and circPVT1 regulates GPX4 and SLC7A11 expression via the miR-30a-5p/FZD3 axis (112).