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Published on: August 8, 2022
Portuguese study of familial dilated cardiomyopathy: the FATIMA study
Elisabete Martins1, José Silva-Cardoso, Manuel Bicho
1Serviço de Cardiologia-Hospital de São João, Faculdade de Medicina do Porto, Porto, Portugal. bernardes_med@hotmail.com
Insights
Dilated cardiomyopathy (DCM) is a genetic heart condition. This study outlines a multicenter approach to identify genetic mutations in familial DCM cases within the Portuguese population.
Area of Science:
- Cardiology
- Genetics
- Molecular Biology
Background:
- Dilated cardiomyopathy (DCM) is a myocardial disease affecting ventricular function, with over 30% of cases having a genetic origin.
- DCM often manifests in adulthood with heart failure, arrhythmias, or sudden death, typically inherited in an autosomal dominant pattern.
- Previous studies have focused on limited gene screenings, leaving the epidemiology of familial DCM mutations largely unknown.
Purpose of the Study:
- To describe the methodology for a multicenter study on familial DCM.
- To facilitate the clinical and molecular characterization of familial DCM patients in Portugal.
- To address the knowledge gap in the epidemiology of genetic mutations in familial DCM.
Main Methods:
- Implementing a multicenter study design.
- Screening for a wide range of mutations in familial and idiopathic DCM cases.
- Conducting thorough clinical and molecular characterization of affected individuals.
Main Results:
- Methodology for a comprehensive multicenter study on familial DCM established.
- Framework for genetic mutation screening and clinical characterization developed.
- Foundation laid for understanding DCM epidemiology in the Portuguese population.
Conclusions:
- A robust multicenter study methodology is crucial for elucidating the genetic basis of DCM.
- Comprehensive genetic screening and clinical data are needed to understand familial DCM epidemiology.
- This study will provide critical insights into DCM in the Portuguese population.
Abstract:
Dilated cardiomyopathy (DCM) is a myocardial disease, characterized by ventricular dilatation and impaired systolic function, that in more than 30% of cases has a familial or genetic origin. Given its age-dependent penetrance, DCM frequently manifests in adults by signs or symptoms of heart failure, arrhythmias or sudden death. The predominant mode of inheritance is autosomal dominant, and in these cases mutations are identified in genes coding for cytoskeletal, sarcomeric or nuclear envelope proteins. To date, most studies aimed at molecular diagnosis of DCM have been in selected families, or in larger groups of patients, but screening for mutations in a limited number of genes. Consequently, the epidemiology of mutations in familial DCM remains unknown. There is thus a need for multicenter studies, involving screening for a wide range of mutations in several families and in cases of idiopathic DCM. The present article describes the methodology of a multicenter study, aimed at clinical and molecular characterization of familial DCM patients in the Portuguese population.
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