Down-Regulation of APTR and it's Diagnostic Value in Papillary and Anaplastic Thyroid Cancer.

APTR has been employed as a potential biomarker attributing to it was involved in carcinogenesis and malignancy's progression. However, the roles of APTR in papillary thyroid cancer (PTC) and anaplastic thyroid cancer (ATC) are unclear. In the present study, we aimed to explore the relative expression of APTR in PTC and ATC tissues and the relation between APTR expression and PTC clinicopathological features. We analyzed APTR expression in PTC and ATC by investigating data obtained from the Gene Expression Omnibus (GEO) database. Then, we tested 76-pair PTC and adjacent normal samples by qRT-PCR, and the result was in accordance with the analysis in GEO datasets. Chi-square (χ2) analysis was employed to evaluate the association between APTR and PTC clinical features. These results showed that APTR was negatively related to TNM stages, distant metastasis. In addition, we further evaluated the feasibility of using APTR to detect PTC and ATC patients by the receiver operating characteristic (ROC) and the area under curve (AUC). These findings implied that down-regulation of APTR is correlated with tumorigenesis, also indicated that the potential diagnostic value of APTR for detecting PTC and ATC patients.