Abstract
In the present study, we investigated whether circulating cell-free microRNAs serve as potential biomarkers in epithelial ovarian cancer (EOC) patients. Circulating miR-373, miR-200a, miR-200b and miR-200c were quantified in a cohort of 60 EOC patients, 20 patients with benign ovarian diseases and 32 healthy women using quantitative TaqMan MicroRNA assays. The serum concentrations of cell-free miR-373, miR-200a, miR-200b and miR-200c were significantly higher in EOC patients than in healthy women (p = 0.0001). With a sensitivity of 83 % and a specificity of 100 %, the combination of miR-200a, miR-200b and miR-200c could differ between malignant and benign ovarian tumors (p = 0.0001). Elevated levels of these cell-free microRNAs could be detected in FIGO I-II and FIGO III-IV stages, grading G1-2 and G3 and lymph node-negative and -positive EOC. In conclusion, the increased serum levels of this microRNA panel have diagnostic value for distinguishing healthy controls and benign tumors from EOC.
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