RT Journal Article T1 Plasma microrna expression profile for reduced ejection fraction in dilated cardiomyopathy A1 Calderon-Dominguez, Maria A1 Belmonte, Thalía A1 Quezada-Feijoo, Maribel A1 Ramos, Mónica A1 Calderon-Dominguez, Juan A1 Campuzano, Oscar A1 Mangas, Alipio A1 Toro, Rocio K1 Plasma K1 Cardiomyopathy K1 Heart diseases K1 RNA K1 MicroRNAs K1 Cardiomiopatías K1 Cardiopatías K1 ARN K1 MicroARNs AB The left ventricular (LV) ejection fraction (EF) is key to prognosis in dilated cardiomyopathy (DCM). Circulating microRNAs have emerged as reliable biomarkers for heart diseases, included DCM. Clinicians need improved tools for greater clarification of DCM EF categorization, to identify high-risk patients. Thus, we investigated whether microRNA profiles can categorize DCM patients based on their EF. 179-differentially expressed circulating microRNAs were screened in two groups: (1) non-idiopathic DCM; (2) idiopathic DCM. Then, 26 microRNAs were identified and validated in the plasma of ischemic-DCM (n = 60), idiopathic-DCM (n = 55) and healthy individuals (n = 44). We identified fourteen microRNAs associated with echocardiographic variables that differentiated idiopathic DCM according to the EF degree. A predictive model of a three-microRNA (miR-130b-3p, miR-150-5p and miR-210-3p) combined with clinical variables (left bundle branch block, left ventricle end-systolic dimension, lower systolic blood pressure and smoking habit) was obtained for idiopathic DCM with a severely reduced-EF. The receiver operating characteristic curve analysis supported the discriminative potential of the diagnosis. Bioinformatics analysis revealed that miR-150-5p and miR-210-3p target genes might interact with each other with a high connectivity degree. In conclusion, our results revealed a three-microRNA signature combined with clinical variables that highly discriminate idiopathic DCM categorization. This is a potential novel prognostic biomarker with high clinical value. PB Springer Nature YR 2021 FD 2021-04-06 LK http://hdl.handle.net/10668/3816 UL http://hdl.handle.net/10668/3816 LA en NO Calderon-Dominguez M, Belmonte T, Quezada-Feijoo M, Ramos M, Calderon-Dominguez J, Campuzano O, et al. Plasma microrna expression profile for reduced ejection fraction in dilated cardiomyopathy. Sci Rep. 2021 Apr 6;11(1):7517 DS RISalud RD Apr 4, 2025