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• W4327701974 abstract "Abstract STUDY QUESTION Circulating miRNAs previously associated with androgen excess in women might be used as diagnostic biomarkers for polycystic ovary syndrome (PCOS). SUMMARY ANSWER Models based on circulating miR-142-3p and miR-598-3p expression show good discrimination among women with and without PCOS, particularly when coupled with easily available measurements such as waist-to-hip ratio (WHR) and circulating LH-to-FSH (LH/FSH) ratios. WHAT IS KNOWN ALREADY The lack of standardization of the signs, methods, and threshold values used to establish the presence of the diagnostic criteria (hyperandrogenism, ovulatory dysfunction, and polycystic ovarian morphology) complicates the diagnosis of PCOS. Certain biomarkers may help with such a diagnosis. We conducted a validation study to check the diagnostic accuracy for PCOS of several miRNAs that were associated with the syndrome in a small pilot study that had been previously carried out by our research group. STUDY DESIGN, SIZE, DURATION This was a diagnostic test study involving 140 premenopausal women. PARTICIPANTS/MATERIALS, SETTING, METHODS We included 71 women with PCOS and 69 healthy control women in the study. Both groups were selected as to be similar in terms of body mass index. We used miRCURY LNA™ Universal RT microRNA PCR to analyse the five miRNAs that had shown the strongest associations with PCOS in a much smaller pilot study previously conducted by our group. We studied diagnostic accuracy using receiver operating characteristics (ROC) curve analysis. MAIN RESULTS AND THE ROLE OF CHANCE Only the expression of two miRNAs, miR-142-3p and miR-598-3p, of the five studied, was different between the women with PCOS and the non-hyperandrogenic controls. The diagnostic accuracy of the combination of these circulating miRNAs was good (area under the ROC curve (AUC) 0.801; 95% CI: 0.72–0.88) and was further improved when adding WHR (AUC 0.834, 95% CI: 0.756–0.912), LH/FSH ratio (AUC = 0.869, 95% CI: 0.804–0.934) or both (AUC = 0.895, 95% CI: 0.835–0.954). We developed several models by selecting different threshold values for these variables favouring either sensitivity or specificity, with positive and negative predictive values as high as 88% or 85%, respectively. LIMITATIONS, REASONS FOR CAUTION Patients included here had the classic PCOS phenotype, consisting of hyperandrogenism and ovulatory dysfunction; hence, the present results might not apply to milder phenotypes lacking androgen excess. WIDER IMPLICATIONS OF THE FINDINGS If confirmed in larger studies addressing different populations and PCOS phenotypes, these biomarkers may be useful to simplify the clinical diagnosis of this prevalent syndrome. STUDY FUNDING/COMPETING INTEREST(S) This research was funded by Instituto de Salud Carlos III, Spanish Ministry of Science and Innovation (grants PI15/01686, PIE16/00050, PI18/01122 & PI21/00116) and co-funded by European Regional Development Fund ‘A way to make Europe’. Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) are also initiatives of the Instituto de Salud Carlos III. The authors have no competing interests to disclose. TRIAL REGISTRATION NUMBER N/A." @default.
• W4327701974 created "2023-03-18" @default.
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• W4327701974 date "2023-03-17" @default.
• W4327701974 modified "2023-09-24" @default.
• W4327701974 title "Validation of circulating microRNAs miR-142-3p and miR-598-3p in women with polycystic ovary syndrome as potential diagnostic markers" @default.
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• W4327701974 doi "https://doi.org/10.1093/humrep/dead043" @default.
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