In recent studies, DANCR was found to function as a ceRNA to promote osteosarcoma progression by sponging miR-33a-5p (Jiang et al., 2017), miR-216a-5p (Pan et al., 2020), miR-149 (Zhang W. et al., 2020), miR-335-5p, and miR-1972 (Wang et al., 2018c). The gene discussed is DANCR; the disease is osteosarcoma.