For example, Hsa_circ_0053063 is a circRNA generated from several exons of hydroxyacyl CoA dehydrogenase trifunctional multienzyme complex subunit alpha (HADHA), and it inhibits cell viability, proliferation, and progression of breast cancer through stabilization of PDCD4 by targeting miR-330-3p (63). This evidence concerns the gene HADHA and breast cancer.