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Russo V, Papaccioli G, Maddaloni V, Caputo A, Pepe N, Rago A, Maiorino M, Golino P, Nigro G. Case report: Lamin A/C gene mutation in patient with drug-induced type 1 Brugada syndrome at high arrhythmic risk. Front Cardiovasc Med 2023; 9:1099508. [PMID: 36704457 PMCID: PMC9871475 DOI: 10.3389/fcvm.2022.1099508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/06/2022] [Indexed: 01/12/2023] Open
Abstract
We report the case of drug-induced type 1 Brugada syndrome at high arrhythmic risk associated with Lamin A/C gene mutation.
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Affiliation(s)
- Vincenzo Russo
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy,*Correspondence: Vincenzo Russo ✉
| | - Giovanni Papaccioli
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Valeria Maddaloni
- Clinical Biochemistry Unit, Genetic Section, Monaldi Hospital, Naples, Italy
| | - Adriano Caputo
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Nicola Pepe
- Clinical Biochemistry Unit, Genetic Section, Monaldi Hospital, Naples, Italy
| | - Anna Rago
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy
| | | | - Paolo Golino
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Gerardo Nigro
- Cardiology Unit, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania Luigi Vanvitelli, Naples, Italy
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Genotype-Phenotype Correlations in Human Diseases Caused by Mutations of LINC Complex-Associated Genes: A Systematic Review and Meta-Summary. Cells 2022; 11:cells11244065. [PMID: 36552829 PMCID: PMC9777268 DOI: 10.3390/cells11244065] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Mutations in genes encoding proteins associated with the linker of nucleoskeleton and cytoskeleton (LINC) complex within the nuclear envelope cause different diseases with varying phenotypes including skeletal muscle, cardiac, metabolic, or nervous system pathologies. There is some understanding of the structure of LINC complex-associated proteins and how they interact, but it is unclear how mutations in genes encoding them can cause the same disease, and different diseases with different phenotypes. Here, published mutations in LINC complex-associated proteins were systematically reviewed and analyzed to ascertain whether patterns exist between the genetic sequence variants and clinical phenotypes. This revealed LMNA is the only LINC complex-associated gene in which mutations commonly cause distinct conditions, and there are no clear genotype-phenotype correlations. Clusters of LMNA variants causing striated muscle disease are located in exons 1 and 6, and metabolic disease-associated LMNA variants are frequently found in the tail of lamin A/C. Additionally, exon 6 of the emerin gene, EMD, may be a mutation "hot-spot", and diseases related to SYNE1, encoding nesprin-1, are most often caused by nonsense type mutations. These results provide insight into the diverse roles of LINC-complex proteins in human disease and provide direction for future gene-targeted therapy development.
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Reevaluating the Mutation Classification in Genetic Studies of Bradycardia Using ACMG/AMP Variant Classification Framework. Int J Genomics 2020; 2020:2415850. [PMID: 32211440 PMCID: PMC7061116 DOI: 10.1155/2020/2415850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 02/08/2020] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Next-generation sequencing (NGS) has become more accessible, leading to an increasing number of genetic studies of familial bradycardia being reported. However, most of the variants lack full evaluation. The relationship between genetic factors and bradycardia should be summarized and reevaluated. METHODS We summarized genetic studies published in the PubMed database from 2008/1/1 to 2019/9/1 and used the ACMG/AMP classification framework to analyze related sequence variants. RESULTS We identified 88 articles, 99 sequence variants, and 34 genes after searching the PubMed database and classified ABCC9, ACTN2, CACNA1C, DES, HCN4, KCNQ1, KCNH2, LMNA, MECP2, LAMP2, NPPA, SCN5A, and TRPM4 as high-priority genes causing familial bradycardia. Most mutated genes have been reported as having multiple clinical manifestations. CONCLUSIONS For patients with familial CCD, 13 high-priority genes are recommended for evaluation. For genetic studies, variants should be carefully evaluated using the ACMG/AMP variant classification framework before publication.
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Looking at New Unexpected Disease Targets in LMNA-Linked Lipodystrophies in the Light of Complex Cardiovascular Phenotypes: Implications for Clinical Practice. Cells 2020; 9:cells9030765. [PMID: 32245113 PMCID: PMC7140635 DOI: 10.3390/cells9030765] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/01/2020] [Accepted: 03/07/2020] [Indexed: 12/13/2022] Open
Abstract
Variants in LMNA, encoding A-type lamins, are responsible for laminopathies including muscular dystrophies, lipodystrophies, and progeroid syndromes. Cardiovascular laminopathic involvement is classically described as cardiomyopathy in striated muscle laminopathies, and arterial wall dysfunction and/or valvulopathy in lipodystrophic and/or progeroid laminopathies. We report unexpected cardiovascular phenotypes in patients with LMNA-associated lipodystrophies, illustrating the complex multitissular pathophysiology of the disease and the need for specific cardiovascular investigations in affected patients. A 33-year-old woman was diagnosed with generalized lipodystrophy and atypical progeroid syndrome due to the newly identified heterozygous LMNA p.(Asp136Val) variant. Her complex cardiovascular phenotype was associated with atherosclerosis, aortic valvular disease and left ventricular hypertrophy with rhythm and conduction defects. A 29-year-old woman presented with a partial lipodystrophy syndrome and a severe coronary atherosclerosis which required a triple coronary artery bypass grafting. She carried the novel heterozygous p.(Arg60Pro) LMNA variant inherited from her mother, affected with partial lipodystrophy and dilated cardiomyopathy. Different lipodystrophy-associated LMNA pathogenic variants could target cardiac vasculature and/or muscle, leading to complex overlapping phenotypes. Unifying pathophysiological hypotheses should be explored in several cell models including adipocytes, cardiomyocytes and vascular cells. Patients with LMNA-associated lipodystrophy should be systematically investigated with 24-h ECG monitoring, echocardiography and non-invasive coronary function testing.
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Mosbah H, Vatier C, Boccara F, Jéru I, Vantyghem MC, Donadille B, Wahbi K, Vigouroux C. Cardiovascular complications of lipodystrophic syndromes - focus on laminopathies. ANNALES D'ENDOCRINOLOGIE 2020; 82:146-148. [PMID: 32201029 DOI: 10.1016/j.ando.2020.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Helena Mosbah
- Centre national de Référence des Pathologies Rares de l'Insulino- Sécrétion et de l'Insulino -Sensibilité (PRISIS), Service d'Endocrinologie, Diabétologie et Endocrinologie de la Reproduction, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France; Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| | - Camille Vatier
- Centre national de Référence des Pathologies Rares de l'Insulino- Sécrétion et de l'Insulino -Sensibilité (PRISIS), Service d'Endocrinologie, Diabétologie et Endocrinologie de la Reproduction, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France; Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| | - Franck Boccara
- Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France; Service de Cardiologie, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Isabelle Jéru
- Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France; Laboratoire Commun de Biologie et Génétique Moléculaires, Hôpital Saint-Antoine, Assistance publique-Hôpitaux de Paris, Paris, France
| | - Marie-Christine Vantyghem
- Université de Lille, CHU Lille, Service d'Endocrinologie, Diabétologie et Métabolisme, Inserm U1190, European Genomic Institute for Diabetes (EGID), Lille, France
| | - Bruno Donadille
- Centre national de Référence des Pathologies Rares de l'Insulino- Sécrétion et de l'Insulino -Sensibilité (PRISIS), Service d'Endocrinologie, Diabétologie et Endocrinologie de la Reproduction, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France; Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| | - Karim Wahbi
- Sorbonne Université, Inserm UMR_S970, FILNEMUS, Service de Cardiologie, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Paris-Descartes, Paris Cardiovascular Research Centre (PARCC), Paris, France
| | - Corinne Vigouroux
- Centre national de Référence des Pathologies Rares de l'Insulino- Sécrétion et de l'Insulino -Sensibilité (PRISIS), Service d'Endocrinologie, Diabétologie et Endocrinologie de la Reproduction, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France; Sorbonne Université, Inserm UMR_S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France; Laboratoire Commun de Biologie et Génétique Moléculaires, Hôpital Saint-Antoine, Assistance publique-Hôpitaux de Paris, Paris, France.
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Cardiometabolic assessment of lamin A/C gene mutation carriers: a phenotype–genotype correlation. DIABETES & METABOLISM 2019; 45:382-389. [DOI: 10.1016/j.diabet.2018.09.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 06/16/2018] [Accepted: 09/07/2018] [Indexed: 01/01/2023]
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Cellular and Animal Models of Striated Muscle Laminopathies. Cells 2019; 8:cells8040291. [PMID: 30934932 PMCID: PMC6523539 DOI: 10.3390/cells8040291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/18/2019] [Accepted: 03/25/2019] [Indexed: 01/12/2023] Open
Abstract
The lamin A/C (LMNA) gene codes for nuclear intermediate filaments constitutive of the nuclear lamina. LMNA has 12 exons and alternative splicing of exon 10 results in two major isoforms—lamins A and C. Mutations found throughout the LMNA gene cause a group of diseases collectively known as laminopathies, of which the type, diversity, penetrance and severity of phenotypes can vary from one individual to the other, even between individuals carrying the same mutation. The majority of the laminopathies affect cardiac and/or skeletal muscles. The underlying molecular mechanisms contributing to such tissue-specific phenotypes caused by mutations in a ubiquitously expressed gene are not yet well elucidated. This review will explore the different phenotypes observed in established models of striated muscle laminopathies and their respective contributions to advancing our understanding of cardiac and skeletal muscle-related laminopathies. Potential future directions for developing effective treatments for patients with lamin A/C mutation-associated cardiac and/or skeletal muscle conditions will be discussed.
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