Title: Screening differential circular RNA expression profiles reveal that hsa_circ_0128298 is a biomarker in the diagnosis and prognosis of hepatocellular carcinoma
Abstract: Screening differential circular RNA expression profiles reveal that hsa-circ-0128298 is a biomarker in the diagnosis and prognosis of hepatocellular carcinoma Dawei Chen,1,2,* Chenyue Zhang,3,* Jiamao Lin,4 Xinyu Song,2,4 Haiyong Wang4 1Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, 2School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, 3Department of Integrative Oncology, Fudan University Shanghai Cancer Center, Shanghai, 4Department of Internal Medicine-Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, People’s Republic of China *These authors contributed equally to this work Aim: The aim of this study was to analyze the diagnostic and prognostic values of the circular RNA (circRNA) hsa_circ_0128298 in hepatocellular carcinoma (HCC). Patients and methods: The global circRNA expression was measured using circRNA microarray using three pairs of cancer and noncancerous tissues from HCC patients. The microarray analysis revealed that two circRNAs were differentially expressed in the three pairs of cancerous and noncancerous tissues. The higher levels of two representative circRNAs, such as hsa_circ_0128298 and hsa_circ_0091582, were further confirmed by real-time polymerase chain reaction. In addition, the association between the expression level of hsa_circ_0128298 and the clinicopathological features of patients with HCC was further analyzed. The clinical diagnosis value was confirmed by receiver operating characteristic (ROC) curve analysis. Independent prognostic factors of patient outcome were identified using the Cox regression model. The survival data were analyzed by the Kaplan–Meier method, and the differences were evaluated using log-rank tests. Two-sided P-values