RT Journal Article T1 Mutations in TRIM63 cause an autosomal-recessive form of hypertrophic cardiomyopathy. A1 Salazar-Mendiguchía, Joel A1 Ochoa, Juan Pablo A1 Palomino-Doza, Julian A1 Domínguez, Fernando A1 Díez-López, Carles A1 Akhtar, Mohammed A1 Ramiro-León, Soraya A1 Clemente, María M A1 Pérez-Cejas, Antonia A1 Robledo, María A1 Gómez-Díaz, Iria A1 Peña-Peña, María Luisa A1 Climent, Vicente A1 Salmerón-Martínez, Francisco A1 Hernández, Celestino A1 García-Granja, Pablo E A1 Mogollón, M Victoria A1 Cárdenas-Reyes, Ivonne A1 Cicerchia, Marcos A1 García-Giustiniani, Diego A1 Lamounier, Arsonval A1 Gil-Fournier, Belén A1 Díaz-Flores, Felícitas A1 Salguero, Rafael A1 Santomé, Luis A1 Syrris, Petros A1 Olivé, Montse A1 García-Pavía, Pablo A1 Ortiz-Genga, Martín A1 Elliott, Perry M A1 Monserrat, Lorenzo A1 GENESCOPIC Research Group, K1 familial cardiomyopathies K1 genetics K1 hypertrophic cardiomyopathy AB Up to 50% of patients with hypertrophic cardiomyopathy (HCM) show no disease-causing variants in genetic studies. TRIM63 has been suggested as a candidate gene for the development of cardiomyopathies, although evidence for a causative role in HCM is limited. We sought to investigate the relationship between rare variants in TRIM63 and the development of HCM. TRIM63 was sequenced by next generation sequencing in 4867 index cases with a clinical diagnosis of HCM and in 3628 probands with other cardiomyopathies. Additionally, 3136 index cases with familial cardiovascular diseases other than cardiomyopathy (mainly channelopathies and aortic diseases) were used as controls. Sixteen index cases with rare homozygous or compound heterozygous variants in TRIM63 (15 HCM and one restrictive cardiomyopathy) were included. No homozygous or compound heterozygous were identified in the control population. Familial evaluation showed that only homozygous and compound heterozygous had signs of disease, whereas all heterozygous family members were healthy. The mean age at diagnosis was 35 years (range 15-69). Fifty per cent of patients had concentric left ventricular hypertrophy (LVH) and 45% were asymptomatic at the moment of the first examination. Significant degrees of late gadolinium enhancement were detected in 80% of affected individuals, and 20% of patients had left ventricular (LV) systolic dysfunction. Fifty per cent had non-sustained ventricular tachycardia. Twenty per cent of patients suffered an adverse cerebrovascular event (20%). TRIM63 appears to be an uncommon cause of HCM inherited in an autosomal-recessive manner and associated with concentric LVH and a high rate of LV dysfunction. YR 2020 FD 2020-05-25 LK http://hdl.handle.net/10668/15635 UL http://hdl.handle.net/10668/15635 LA en DS RISalud RD Apr 18, 2025