MALAT1 and osteosarcoma: Long noncoding RNA (LncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), an lncRNA with notorious roles in multiple aggressive tumors, was reported to promote osteosarcoma development by up-regulation of HMGB1 via hsa-miR-142-3p and hsa-miR-129-5p [26].