ATB is upregulated in PTC tissues compared with noncancerous tissues. ATB is upregulated and functions as an oncogene in PTC. Furthermore, lncRNA-ATB may serve as a diagnostic biomarker and therapeutic target for PTC. High-expression of lncRNA-ATB is associated with large tumor size and lymph node metastasis. LncRNA-ATB has been reported to promote cancer metastasis via binding and negatively regulating miR-200 family,and then inducing epithelial-mesenchymal transition22.