CASC11 and osteosarcoma: Recently, cancer susceptibility candidate 11 (CASC11), a kind of LncRNAs, was reported to be a promotor in oncogenesis, tumor development, and metastasis in a distinct variety of malignant tumors including colorectal cancer, gastric cancer, osteosarcoma, ovarian squamous cell carcinoma, and lung cancer.8, 9, 10, 11, 12