Circular RNA circ-MTO1 serves as a novel potential diagnostic and prognostic biomarker for gallbladder cancer

X. Wang, Y.K. Lin, Z.-L. Lu, J. Li

Department of Hepatobiliary and Pancreatic Surgery, People Hospital of Xinghua, Xinghua, China. xizangnan@139.com

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• Oncology

OBJECTIVE: Primary gallbladder carcinoma (GBC) is one of the most common biliary malignancies in the gastrointestinal tract. In this work, we examined the roles of circular-mitochondrial translation optimization 1 (circ-MTO1) in GBC tissues and patient plasma.
PATIENTS AND METHODS: Circ-MTO1 expression in GBC tissues and patient plasma was evaluated by quantitative Real Time-PCR (qRT-PCR). The relationships between circ-MTO1 expression and the pathological characteristics of GBC were analyzed. Kaplan-Meier survival curve was applied to calculate overall survival (OS) and progression-free survival (PFS) in GBC patients with different circ-MTO1 expression. The univariate COX regression curve analysis method was employed to analyze the potential relationships between high circ-MTO1 expression and OS and PFS. At last, we assessed the diagnostic value of the circ-MTO1 level in GBC patient plasma.
RESULTS: Circ-MTO1 expression was significantly upregulated in tumor tissues and plasma in GBC patients. In addition, circ-MTO1 expression was associated with clinical-pathological characteristics in GBC. High circ-MTO1 expression served as an independent prognostic factor for poor OS and PFS in GBC patients. Moreover, upregulated plasma circ-MTO1 level was significantly associated with tumor development.
CONCLUSIONS: Circ-MTO1 is a potential early diagnostic and prognostic biomarker for patients with gallbladder cancer. Thus, our present work might provide a new understanding of the diagnosis and treatment of GBC.

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