RT Journal Article T1 Natural History of MYH7-Related Dilated Cardiomyopathy. A1 de Frutos, Fernando A1 Ochoa, Juan Pablo A1 Navarro-Peñalver, Marina A1 Baas, Annette A1 Bjerre, Jesper Vandborg A1 Zorio, Esther A1 Méndez, Irene A1 Lorca, Rebeca A1 Verdonschot, Job A J A1 García-Granja, Pablo Elpidio A1 Bilinska, Zofia A1 Fatkin, Diane A1 Fuentes-Cañamero, M Eugenia A1 García-Pinilla, José M A1 García-Álvarez, María I A1 Girolami, Francesca A1 Barriales-Villa, Roberto A1 Díez-López, Carles A1 Lopes, Luis R A1 Wahbi, Karim A1 García-Álvarez, Ana A1 Rodríguez-Sánchez, Ibon A1 Rekondo-Olaetxea, Javier A1 Rodríguez-Palomares, José F A1 Gallego-Delgado, María A1 Meder, Benjamin A1 Kubanek, Milos A1 Hansen, Frederikke G A1 Restrepo-Córdoba, María Alejandra A1 Palomino-Doza, Julián A1 Ruiz-Guerrero, Luis A1 Sarquella-Brugada, Georgia A1 Perez-Perez, Alberto José A1 Bermúdez-Jiménez, Francisco José A1 Ripoll-Vera, Tomas A1 Rasmussen, Torsten Bloch A1 Jansen, Mark A1 Sabater-Molina, Maria A1 Elliot, Perry M A1 Garcia-Pavia, Pablo K1 MYH7 K1 dilated cardiomyopathy K1 genetics AB Variants in myosin heavy chain 7 (MYH7) are responsible for disease in 1% to 5% of patients with dilated cardiomyopathy (DCM); however, the clinical characteristics and natural history of MYH7-related DCM are poorly described. We sought to determine the phenotype and prognosis of MYH7-related DCM. We also evaluated the influence of variant location on phenotypic expression. We studied clinical data from 147 individuals with DCM-causing MYH7 variants (47.6% female; 35.6 ± 19.2 years) recruited from 29 international centers. At initial evaluation, 106 (72.1%) patients had DCM (left ventricular ejection fraction: 34.5% ± 11.7%). Median follow-up was 4.5 years (IQR: 1.7-8.0 years), and 23.7% of carriers who were initially phenotype-negative developed DCM. Phenotypic expression by 40 and 60 years was 46% and 88%, respectively, with 18 patients (16%) first diagnosed at  MYH7-related DCM is characterized by early age of onset, high phenotypic expression, low left ventricular reverse remodeling, and frequent progression to ESHF. Heart failure complications predominate over ventricular arrhythmias, which are rare. PB Elsevier Inc. YR 2022 FD 2022-07-01 LK http://hdl.handle.net/10668/22283 UL http://hdl.handle.net/10668/22283 LA en NO de Frutos F, Ochoa JP, Navarro-Peñalver M, Baas A, Bjerre JV, Zorio E, et al. European Genetic Cardiomyopathies Initiative Investigators. Natural History of MYH7-Related Dilated Cardiomyopathy. J Am Coll Cardiol. 2022 Oct 11;80(15):1447-1461. NO This study has been funded by Instituto de Salud Carlos III (ISCIII)through the projects PI18/0004, PI20/0320, and PT17/0015/0043(cofunded by European Regional Development Fund/European SocialFund “A way to make Europe”/“Investing in your future”). TheCentro Nacional de Investigaciones Cardiovasculares (CNIC) is supported by the ISCIII, MCIN, the Pro-CNIC Foundation, and the SeveroOchoa Centers of Excellence program (CEX2020-001041-S). TheHospital Universitario Puerta de Hierro, the Hospital Sant Joan deDéu, and the Hospital Universitario Virgen de la Arrixaca are members of the European Reference Network for Rare and Low PrevalenceComplex Diseases of the Heart. Dr de Frutos receives grant supportfrom ISCIII (CM20/00101). Genetic examinations of Polish patientswere funded with DETECTIN-HF grant from the ERA-CVD framework,NCBiR. Dr Baas has received funding from CVON2020B005 DOUBLEDOSE, Dutch Heart Foundation (Dekker 2015T041). Dr Fatkin has received funding from Victor Chang Cardiac Research Institute andNSW Health. Dr Lopes is funded by an MRC UK Clinical AcademicResearch Partnership award (MR/T005181/1). Dr Meder has receivedfunding from the Deutsches Zentrum für Herz-Kreislauf-Forschung(German Center for Cardiovascular Research) and Informatics forLife (Klaus Tschira Foundation). Dr Kubanek has received grantsupport from the Ministry of Health, Czech Republic (NV19-08-00122)and IPO (Institute for Clinical and Experimental Medicine–IKEM, IN00023001). All other authors have reported that they have norelationships relevant to the contents of this paper to disclose. DS RISalud RD Apr 17, 2025