Abstract
Circular RNAs (circRNAs) have been identified as important regulators in regulatingcancerprogression. The study aims to investigate the expression of circular RNA_LARP4 (circ LARP4) and clinical significance in ovarian cancer (OC). The expression of circ LARP4 was detected in a total of 78 paired ovarian cancer tissue and adjacent normal tissue samples using quantitative Reverse Transcription-Polymerase Chain Reaction (qRT-PCR) analyses. The chi-square test was used to assess the association between expression of circLARP4 and clinical-pathological parameters. Survival plot was evaluated using the Kaplan-Meier method. The multivariate Cox analysis model was used for tumor prognosis analysis. We identified that circLARP4 expression was significantly down-regulated in ovariancancertissues compared with corresponding controls. Furthermore, we found that circLARP4 expression was significantly associated with International Federation of Gynecology and Obstetrics (FIGO) stage and lymph node metastases. Lower circLARP4 expression was associated with poorprognosisof OC patients. Moreover, multivariate Cox analysis showed that lower circLARP4 was an independent risk for OC prognosis. These results indicated that circLARP4 expression was lower and highlighted that circLARP4 was identified as a potential biomarker of ovarian cancer prognosis.
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