RT Journal Article T1 Association of Genetic Variants With Outcomes in Patients With Nonischemic Dilated Cardiomyopathy A1 Escobar-Lopez, Luis A1 Ochoa, Juan Pablo A1 Mirelis, Jesus G. A1 Espinosa, Maria Angeles A1 Navarro, Marina A1 Gallego-Delgado, Maria A1 Barriales-Villa, Roberto A1 Robles-Mezcua, Ainhoa A1 Basurte-Elorz, Maria Teresa A1 Garcia-Moreno, Laura Gutierrez A1 Climent, Vicente A1 Jimenez-Jaimez, Juan A1 Mogollon-Jimenez, Maria Victoria A1 Lopez, Javier A1 Pena-Pena, Maria Luisa A1 Garcia-Alvarez, Ana A1 Brion, Maria A1 Ripoll-Vera, Tomas A1 Palomino-Doza, Julian A1 Tiron, Coloma A1 Idiazabal, Uxua A1 Brogger, Maria Noel A1 Garcia-Hernandez, Soledad A1 Restrepo-Cordoba, Maria Alejandra A1 Gonzalez-Lopez, Esther A1 Mendez, Irene A1 Sabater, Maria A1 Villacorta, Eduardo A1 Larranaga-Moreira, Jose M. A1 Abecia, Ana A1 Fernandez, Ana Isabel A1 Garcia-Pinilla, Jose M. A1 Rodriguez-Palomares, Jose F. A1 Gimeno-Blanes, Juan Ramon A1 Bayes-Genis, Antoni A1 Lara-Pezzi, Enrique A1 Dominguez, Fernando A1 Garcia-Pavia, Pablo K1 dilated cardiomyopathy K1 genetics K1 heart failure K1 left ventricular reverse remodeling K1 mutation K1 prognosis K1 sudden cardiac death K1 ventricular arrhythmia K1 Risk K1 Defibrillator K1 Guidelines K1 Management K1 Statement AB BACKGROUND The clinical relevance of genetic variants in nonischemic dilated cardiomyopathy (DCM) is unsettled. OBJECTIVES The study sought to assess the prognostic impact of disease-causing genetic variants in DCM. METHODS Baseline and longitudinal clinical data from 1,005 genotyped DCM probands were retrospectively collected at 20 centers. A total of 372 (37%) patients had pathogenic or likely pathogenic variants (genotype positive) and 633 (63%) were genotype negative. The primary endpoint was a composite of major adverse cardiovascular events. Secondary endpoints were end-stage heart failure (ESHF), malignant ventricular arrhythmia (MVA), and left ventricular reverse remodeling (LVRR) RESULTS After a median follow-up of 4.04 years (interquartile range: 1.70-7.50 years), the primary endpoint had occurred in 118 (31.7%) patients in the genotype-positive group and in 125 (19.8%) patients in the genotype-negative group (hazard ratio [HR]: 1.51; 95% confidence interval [CI]: 1.17-1.94; P = 0.001). ESHF occurred in 60 (16.1%) genotype-positive patients and in 55 (8.7%) genotype-negative patients (HR: 1.67; 95% CI: 1.16-2.41; P = 0.006). MVA occurred in 73 (19.6%) genotype-positive patients and in 77 (12.2%) genotype-negative patients (HR: 1.50; 95% CI: 1.092.07; P = 0.013). LVRR occurred in 39.6% in the genotype-positive group and in 46.2% in the genotype-negative group (P = 0.047). Among individuals with baseline left ventricular ejection fraction #35%, genotype-positive patients exhibited more major adverse cardiovascular events, ESHF, and MVA than their genotype-negative peers (all P PB Elsevier science inc SN 0735-1097 YR 2021 FD 2021-10-18 LK https://hdl.handle.net/10668/26487 UL https://hdl.handle.net/10668/26487 LA en DS RISalud RD Apr 18, 2025