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Tadros HJ, Miyake CY, Kearney DL, Kim JJ, Denfield SW. The Many Faces of Arrhythmogenic Cardiomyopathy: An Overview. Appl Clin Genet 2023; 16:181-203. [PMID: 37933265 PMCID: PMC10625769 DOI: 10.2147/tacg.s383446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/10/2023] [Indexed: 11/08/2023] Open
Abstract
Arrhythmogenic cardiomyopathy (AC) is a disease that involves electromechanical uncoupling of cardiomyocytes. This leads to characteristic histologic changes that ultimately lead to the arrhythmogenic clinical features of the disease. Initially thought to affect the right ventricle predominantly, more recent data show that it can affect both the ventricles or the left ventricle alone. Throughout the recent era, diagnostic modalities and criteria for AC have continued to evolve and our understanding of its clinical features in different age groups as well as the genotype to the phenotype correlations have improved. In this review, we set out to detail the epidemiology, etiologies, presentations, evaluation, and management of AC across the age continuum.
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Affiliation(s)
- Hanna J Tadros
- Department of Pediatrics, Section of Pediatric Cardiology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Christina Y Miyake
- Department of Pediatrics, Section of Pediatric Cardiology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA
| | - Debra L Kearney
- Department of Pathology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Jeffrey J Kim
- Department of Pediatrics, Section of Pediatric Cardiology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Susan W Denfield
- Department of Pediatrics, Division of Pediatric Cardiology, Baylor College of Medicine, Houston, TX, USA
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Dana J, Dorval G, Martin CS, Belhous K, Levy R, Marlin S, De Bie I, Mautret-Godefroy M, Rausell A, Rio M, Boucher-Brischoux E, Attié-Bitach T, Boddaert N, Pingault V. Investigating genotype-to-phenotype correlation in CHARGE syndrome by deep phenotyping and multiparametric clustering. Clin Genet 2023; 104:466-471. [PMID: 37243350 DOI: 10.1111/cge.14363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/17/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
CHARGE syndrome, due to CHD7 pathogenic variations, is an autosomal dominant disorder characterized by a large spectrum of severity. Despite the great number of variations reported, no clear genotype-to-phenotype correlation has been reported. Unsupervised machine learning and clustering was undertaken using a retrospective cohort of 42 patients, after deep radiologic and clinical phenotyping, to establish genotype-phenotype correlation for CHD7-related CHARGE syndrome. It resulted in three clusters showing phenotypes of different severities. While no clear genotype-phenotype correlation appeared within the first two clusters, a single patient was outlying the cohort data (cluster 3) with the most atypical phenotype and the most distal frameshift variant in the gene. We added two other patients with similar distal pathogenic variants and observed a tendency toward mild and/or atypical phenotypes. We hypothesized that this finding could potentially be related to escaping nonsense mediated RNA decay, but found no evidence of such decay in vivo for any of the CHD7 pathogenic variation tested. This indicates that this milder phenotype may rather result from the production of a protein retaining all functional domains.
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Affiliation(s)
- Jérémy Dana
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Radiologie Pédiatrique, AP-HP, Hôpital Necker Enfants Malades, Université Paris cite, Paris, France
- Department of Diagnostic Radiology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Guillaume Dorval
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | - Christine Saint Martin
- Department of Diagnostic Radiology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Kahina Belhous
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
| | - Raphael Levy
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
| | - Sandrine Marlin
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | - Isabelle De Bie
- Division de génétique médicale, département de médecine spécialisée, centre universitaire de santé McGill, Montréal, Québec, Canada
| | - Manon Mautret-Godefroy
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | - Antonio Rausell
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | - Marlène Rio
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | | | - Tania Attié-Bitach
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
| | - Nathalie Boddaert
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Radiologie Pédiatrique, AP-HP, Hôpital Necker Enfants Malades, Université Paris cite, Paris, France
| | - Véronique Pingault
- Université Paris Cité, Institut Imagine, Inserm U1163, Paris, France
- Service de Médecine Génomique des maladies rares, AP-HP.Centre, Hôpital Necker-Enfants Malades, Paris, France
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