These findings suggest that SNHG12 is involved in the etiology of osteosarcoma via the miR-320a/MCL-1 axis, the miR-195-5p/Notch2 axis, and AMOT gene up-regulation, and thus might serve as a potential biomarker/target for the diagnosis and/or treatment of osteosarcoma. The gene discussed is MCL1; the disease is osteosarcoma.