Circ_0009910 has been found to regulate the expression of ULK1 by sponging miR-34a-5p in chronic myeloid leukemia, thereby activating the level of autophagy [96], and circ_CDYL accelerates autophagic flux via sponging miR-1275 and regulating the expression of autophagy-related genes ATG7 and ULK1, thus promoting autophagy and the progression of breast cancer [97]. Here, ULK1 is linked to breast cancer.