GFRA1 and triple-negative breast carcinoma: In triple-negative breast cancer, circGFRA1 acts as miR-34a ceRNA to regulate GFRA1 expression [75], while circEPSTI1 promotes triple-negative breast cancer cell proliferation through a novel pathway by sponging miR-4753 and miR-6809 and upregulating the oncogene BCL11A [76].