In their study, Chi et al. suggested that circPIP5K1A (Circ_0014130) potentially functioned as an miR-600 sponge to facilitate NSCLC proliferation and metastasis, by promoting hypoxia-inducible factor (HIF)-1α and reversing the inhibitory effects of miR-600 on EMT-related proteins (93). The gene discussed is HIF1A; the disease is non-small cell lung carcinoma.