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Article type: Research Article
Authors: Sun, Yia; * | Yang, Bina | Lin, Maosonga | Yu, Hongb | Chen, Huia | Zhang, Zhenyuc
Affiliations: [a] Department of Gastroenterology, Jiangsu Taizhou People’s Hospital, Taizhou, Jiangsu, China | [b] Department of Pathology, Jiangsu Taizhou People’s Hospital, Taizhou, Jiangsu, China | [c] Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
Correspondence: [*] Corresponding author: Yi Sun, Department of Gastroenterology, Jiangsu Taizhou People’s Hospital, Taihu Road No. 366, Medicine High-Tech Zone, Taizhou, Jiangsu 225300, China. Tel.: +86 523 82292092; E-mail: sunyidoctor27@163.com.
Abstract: BACKGROUND: Circulating microRNAs (miRNAs) have become increasingly appreciated in the diagnosis and prognosis of colorectal cancer (CRC). OBJECTIVE: The aim of this study was to assess the potential diagnostic and prognostic significance of serum miR-30a-5p as a potential biomarker. METHODS: The expression levels of serum miR-30a-5p were measured in 138 cases with CRC, 50 cases with benign lesions (colorectal adenoma and polyps) and 60 healthy volunteers by quantitative real time polymerase chain reaction (qRT-PCR). RESULTS: The results showed that serum miR-30a-5p levels were frequently downregulated in patients with CRC and benign lesions in comparison with normal controls. Moreover, serum miR-30a-5p levels in early-stage CRC patients were significantly increased after surgery. Receiver-operating characteristic (ROC) curve analysis demonstrated serum miR-30a-5p could well distinguish CRC patients, early-stage CRC patients from healthy controls with a relative high value of area under the curve (AUC). Furthermore, low serum miR-30a-5p expression was more frequently occurred in CRC patients with aggressive clinical variables. Additionally, CRC patients exhibiting high serum miR-30a-5p expression had significantly prolonged overall survival than those exhibiting low expression. Finally, both univariate and multivariate analyses revealed that serum miR-30a-5p expression was an independent prognostic factor for overall survival in CRC patients. CONCLUSIONS: Collectively, these findings suggested serum miR-30a-5p might act as a novel biomarker for the diagnosis and prognosis of CRC.
Keywords: miR-30a-5p, colorectal cancer, prognosis, diagnosis
DOI: 10.3233/CBM-182129
Journal: Cancer Biomarkers, vol. 24, no. 3, pp. 299-305, 2019
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