For instance, hsa_circ_0014130 works as a sponge of miR-132-3p to advance the oncogenesis and metastasis of bladder cancer by regulating KCNJ12 expression (Li et al., 2021), and circAGFG1 acts as a sponge of miR-195-5p to promote triple-negative breast cancer progression by regulating CCNE1 expression (Yang et al., 2019). The gene discussed is CCNE1; the disease is triple-negative breast carcinoma.