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Chen L, Zhou ZY, Lu HH, Xie Y, Li G, Huang JF, Zhao DS. Identification of a LMNA (c.646C>T) variant by whole-exome sequencing in combination with a dilated cardiomyopathy (DCM) related gene filter in a family with familiar DCM. J Biomed Res 2018; 32:314-316. [PMID: 30007954 PMCID: PMC6117609 DOI: 10.7555/jbr.32.20180003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Liang Chen
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Zhong-Yin Zhou
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Hui-He Lu
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Ye Xie
- Department of Cardiology, The First Affiliated hospital of Hubei University of Technology, Xianning, Hubei 437600, China
| | - Gang Li
- Department of Cardiology, The Third Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Jian-Fei Huang
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Dong-Sheng Zhao
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
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Marian AJ, van Rooij E, Roberts R. Genetics and Genomics of Single-Gene Cardiovascular Diseases: Common Hereditary Cardiomyopathies as Prototypes of Single-Gene Disorders. J Am Coll Cardiol 2017; 68:2831-2849. [PMID: 28007145 DOI: 10.1016/j.jacc.2016.09.968] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/14/2016] [Accepted: 09/19/2016] [Indexed: 01/05/2023]
Abstract
This is the first of 2 review papers on genetics and genomics appearing as part of the series on "omics." Genomics pertains to all components of an organism's genes, whereas genetics involves analysis of a specific gene or genes in the context of heredity. The paper provides introductory comments, describes the basis of human genetic diversity, and addresses the phenotypic consequences of genetic variants. Rare variants with large effect sizes are responsible for single-gene disorders, whereas complex polygenic diseases are typically due to multiple genetic variants, each exerting a modest effect size. To illustrate the clinical implications of genetic variants with large effect sizes, 3 common forms of hereditary cardiomyopathies are discussed as prototypic examples of single-gene disorders, including their genetics, clinical manifestations, pathogenesis, and treatment. The genetic basis of complex traits is discussed in a separate paper.
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Affiliation(s)
- Ali J Marian
- Center for Cardiovascular Genetics, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center, and Texas Heart Institute, Houston, Texas.
| | - Eva van Rooij
- Hubrecht Institute, KNAW and University Medical Center Utrecht, Utrecht, the Netherlands; Department of Cardiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Robert Roberts
- University of Arizona College of Medicine, Phoenix, Arizona
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Nakayama T, Sugano Y, Yokokawa T, Nagai T, Matsuyama TA, Ohta-Ogo K, Ikeda Y, Ishibashi-Ueda H, Nakatani T, Ohte N, Yasuda S, Anzai T. Clinical impact of the presence of macrophages in endomyocardial biopsies of patients with dilated cardiomyopathy. Eur J Heart Fail 2017; 19:490-498. [DOI: 10.1002/ejhf.767] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/15/2016] [Accepted: 12/23/2016] [Indexed: 12/16/2022] Open
Affiliation(s)
- Takafumi Nakayama
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
| | - Yasuo Sugano
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
| | - Tetsuro Yokokawa
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
| | - Toshiyuki Nagai
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
| | - Taka-aki Matsuyama
- Department of Pathology; National Cerebral and Cardiovascular Center; Osaka Japan
| | - Keiko Ohta-Ogo
- Department of Pathology; National Cerebral and Cardiovascular Center; Osaka Japan
| | - Yoshihiko Ikeda
- Department of Pathology; National Cerebral and Cardiovascular Center; Osaka Japan
| | | | - Takeshi Nakatani
- Department of Transplantation; National Cerebral and Cardiovascular Center; Osaka Japan
| | - Nobuyuki Ohte
- Department of Cardio-Renal Medicine and Hypertension; Nagoya City University; Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
| | - Toshihisa Anzai
- Department of Cardiovascular Medicine; National Cerebral and Cardiovascular Center; 5-7-1 Fujishiro-dai Suita Osaka 565-8565 Japan
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Małek ŁA, Labib S, Mazurkiewicz Ł, Saj M, Płoski R, Tesson F, Bilińska ZT. A new c.1621 C>G, p.R541G lamin A/C mutation in a family with DCM and regional wall motion abnormalities (akinesis/dyskinesis): genotype–phenotype correlation. J Hum Genet 2010; 56:83-6. [DOI: 10.1038/jhg.2010.137] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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van Tintelen JP, Hofstra RM, Katerberg H, Rossenbacker T, Wiesfeld AC, du Marchie Sarvaas GJ, Wilde AA, van Langen IM, Nannenberg EA, van der Kooi AJ, Kraak M, van Gelder IC, van Veldhuisen DJ, Vos Y, van den Berg MP. High yield of LMNA mutations in patients with dilated cardiomyopathy and/or conduction disease referred to cardiogenetics outpatient clinics. Am Heart J 2007; 154:1130-9. [PMID: 18035086 DOI: 10.1016/j.ahj.2007.07.038] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Accepted: 07/31/2007] [Indexed: 10/22/2022]
Abstract
BACKGROUND Among the most frequently encountered mutations in dilated cardiomyopathy (DCM) are those in the lamin A/C (LMNA) gene. Our goal was to analyze the LMNA gene in patients with DCM and/or conduction disease referred to the cardiogenetics outpatient clinic and to evaluate the prevalence of LMNA mutations and their clinical expression. METHODS AND RESULTS The LMNA gene was screened in 61 index patients. Eleven mutations (including 6 novel) were identified, mainly in the subgroup of familial DCM with cardiac conduction disease (3/10 index patients) and in patients with DCM and Emery-Dreifuss, Limb-Girdle, or unclassified forms of muscular dystrophy (7/8 index patients). In addition, a mutation was identified in 1 of 4 families with only cardiac conduction disease. We did not identify any large deletions or duplications. Genotype-phenotype relationships revealed a high rate of sudden death and cardiac transplants in carriers of the p.N195K mutation. Our study confirmed that the p.R225X mutation leads to cardiac conduction disease with late or no development of DCM, underscoring the importance of this mutation in putative familial "lone conduction disease." Nearly one third of LMNA mutation carriers had experienced a thromboembolic event. CONCLUSIONS This study highlights the role of LMNA mutations in DCM and related disorders. A severe phenotype in p.N195K mutation carriers and preferential cardiac conduction disease in p.R225X carriers was encountered. Because of the clinical variability, including the development of associated symptoms in time, LMNA screening should be considered in patients with DCM or familial lone conduction disease.
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van Tintelen JP, Tio RA, Kerstjens-Frederikse WS, van Berlo JH, Boven LG, Suurmeijer AJH, White SJ, den Dunnen JT, te Meerman GJ, Vos YJ, van der Hout AH, Osinga J, van den Berg MP, van Veldhuisen DJ, Buys CHCM, Hofstra RMW, Pinto YM. Severe Myocardial Fibrosis Caused by a Deletion of the 5’ End of the Lamin A/C Gene. J Am Coll Cardiol 2007; 49:2430-9. [PMID: 17599607 DOI: 10.1016/j.jacc.2007.02.063] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Revised: 02/09/2007] [Accepted: 02/12/2007] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The goal of this study was to identify the underlying gene defect in a family with inherited myocardial fibrosis. BACKGROUND A large family with an autosomal dominantly inherited form of myocardial fibrosis with a highly malignant clinical outcome has been investigated. Because myocardial fibrosis preceded the clinical and echocardiographic signs, we consider the disease to be a hereditary form of cardiac fibrosis. METHODS Twenty-five family members were clinically evaluated, and 5 unaffected and 8 affected family members were included in a genome-wide linkage study. RESULTS The highest logarithm of the odds (LOD) score (LOD = 2.6) was found in the region of the lamin AC (LMNA) gene. The LMNA mutation analysis, both by denaturing gradient gel electrophoresis and sequencing, failed to show a mutation. Subsequent Southern blotting, complementary deoxyribonucleic acid sequencing, and multiplex ligation-dependent probe amplification analysis, however, revealed a deletion of the start codon-containing exon and an adjacent noncoding exon. In vitro studies demonstrated that the deletion results in the formation of nuclear aggregates of lamin, suggesting that the mutant allele is being transcribed. CONCLUSIONS This novel LMNA deletion causes a distinct, highly malignant cardiomyopathy with early-onset primary cardiac fibrosis likely due to an effect of the shortened mutant protein, which secondarily leads to arrhythmias and end-stage cardiac failure.
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Affiliation(s)
- J Peter van Tintelen
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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Sylvius N, Bilinska ZT, Veinot JP, Fidzianska A, Bolongo PM, Poon S, McKeown P, Davies RA, Chan KL, Tang ASL, Dyack S, Grzybowski J, Ruzyllo W, McBride H, Tesson F. In vivo and in vitro examination of the functional significances of novel lamin gene mutations in heart failure patients. J Med Genet 2006; 42:639-47. [PMID: 16061563 PMCID: PMC1736117 DOI: 10.1136/jmg.2004.023283] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
CONTEXT Lamin A/C (LMNA) gene variations have been reported in more than one third of genotyped families with dilated cardiomyopathy (DCM). However, the relationship between LMNA mutation and the development of DCM is poorly understood. METHODS AND RESULTS We found that end stage DCM patients carrying LMNA mutations displayed either dramatic ultrastructural changes of the cardiomyocyte nucleus (D192G) or nonspecific changes (R541S). Overexpression of the D192G lamin C dramatically increased the size of intranuclear speckles and reduced their number. This phenotype was only partially reversed by coexpression of the D192G and wild type lamin C. Moreover, the D192G mutation precludes insertion of lamin C into the nuclear envelope when co-transfected with the D192G lamin A. By contrast, the R541S phenotype was entirely reversed by coexpression of the R541S and wild type lamin C. As lamin speckle size is known to be correlated with regulation of transcription, we assessed the SUMO1 distribution pattern in the presence of mutated lamin C and showed that D192G lamin C expression totally disrupts the SUMO1 pattern. CONCLUSION Our in vivo and in vitro results question the relationship of causality between LMNA mutations and the development of heart failure in some DCM patients and therefore, the reliability of genetic counselling. However, LMNA mutations producing speckles result not only in nuclear envelope structural damage, but may also lead to the dysregulation of cellular functions controlled by sumoylation, such as transcription, chromosome organisation, and nuclear trafficking.
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Affiliation(s)
- N Sylvius
- Laboratory of Genetics of Cardiac Diseases, University of Ottawa Heart Institute, Ottawa, ON, Canada
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Dukes-McEwan J, Borgarelli M, Tidholm A, Vollmar AC, Häggström J. Proposed Guidelines for the Diagnosis of Canine Idiopathic Dilated Cardiomyopathy. J Vet Cardiol 2003; 5:7-19. [DOI: 10.1016/s1760-2734(06)70047-9] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Sébillon P, Bouchier C, Bidot LD, Bonne G, Ahamed K, Charron P, Drouin-Garraud V, Millaire A, Desrumeaux G, Benaïche A, Charniot JC, Schwartz K, Villard E, Komajda M. Expanding the phenotype of LMNA mutations in dilated cardiomyopathy and functional consequences of these mutations. J Med Genet 2003; 40:560-7. [PMID: 12920062 PMCID: PMC1735561 DOI: 10.1136/jmg.40.8.560] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS Mutations in the lamin A/C gene (LMNA) have been reported to be involved in dilated cardiomyopathy (DCM) associated with conduction system disease and/or skeletal myopathy. The aim of this study was to perform a mutational analysis of LMNA in a large white population of patients affected by dilated cardiomyopathy with or without associated symptoms. METHODS We performed screening of the coding sequence of LMNA on DNA samples from 66 index cases, and carried out cell transfection experiments to examine the functional consequences of the mutations identified. RESULTS A new missense (E161K) mutation was identified in a family with early atrial fibrillation and a previously described (R377H) mutation in another family with a quadriceps myopathy associated with DCM. A new mutation (28insA) leading to a premature stop codon was identified in a family affected by DCM with conduction defects. No mutation in LMNA was found in cases with isolated dilated cardiomyopathy. Functional analyses have identified potential physiopathological mechanisms involving identified mutations, such as haploinsufficiency (28insA) or intermediate filament disorganisation (E161K, R377H). CONCLUSION For the first time, a specific phenotype characterised by early atrial fibrillation is associated with LMNA mutation. Conversely, mutations in LMNA appear as a rare cause of isolated dilated cardiomyopathy. The variable phenotypes observed in LMNA-DCM might be explained by the variability of functional consequences of LMNA mutations.
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Affiliation(s)
- P Sébillon
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.
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Sylvius N, Duboscq-Bidot L, Bouchier C, Charron P, Benaiche A, Sébillon P, Komajda M, Villard E. Mutational analysis of the beta- and delta-sarcoglycan genes in a large number of patients with familial and sporadic dilated cardiomyopathy. Am J Med Genet A 2003; 120A:8-12. [PMID: 12794684 DOI: 10.1002/ajmg.a.20003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Dilated cardiomyopathy (DCM) is defined by ventricular dilatation associated with impaired contractile function. Approximately one-third of idiopathic dilated cardiomyopathy cases are due to inherited gene mutations. Mutations in the beta- and delta-sarcoglycan genes have been described in limb girdle muscular dystrophy and/or isolated DCM. In this study, the aim was to investigate the prevalence of these genes in isolated DCM. We screened these two genes for mutations in 99 unrelated patients with sporadic or familial DCM. The coding exon and intron-exon boundaries of each gene were amplified by polymerase chain reaction. Mutation analyses were performed by single-strand conformation polymorphism for the beta-sarcoglycan gene and by direct sequencing for the delta-sarcoglycan gene. New polymorphisms, as well as already described ones, were found in these two genes, but none appeared to be responsible for dilated cardiomyopathy. We, therefore, conclude that these genes are not responsible for idiopathic isolated dilated cardiomyopathy in our population. Furthermore, based on previously published and present data, we could estimate the prevalence of delta-sarcoglycan gene mutations to be less than 1% in idiopathic dilated cardiomyopathy, demonstrating that this gene is only marginally implicated in the disease.
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Affiliation(s)
- Nicolas Sylvius
- Laboratoire de Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, Groupe hospitalier Pitié-Salpêtrière, 47 boulevard de l'Hôpital, 75651 Paris cedex 13, France
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Charniot JC, Pascal C, Bouchier C, Sébillon P, Salama J, Duboscq-Bidot L, Peuchmaurd M, Desnos M, Artigou JY, Komajda M. Functional consequences of an LMNA mutation associated with a new cardiac and non-cardiac phenotype. Hum Mutat 2003; 21:473-81. [PMID: 12673789 DOI: 10.1002/humu.10170] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Heritable dilated cardiomyopathy is a genetically highly heterogeneous disease. To date 17 different chromosomal loci have been described for autosomal dominant forms of dilated cardiomyopathy with or without additional clinical manifestations. Among the 10 mutated genes associated with dilated cardiomyopathy, the lamin A/C (LMNA) gene has been reported in forms associated with conduction-system disease with or without skeletal muscle myopathy. For the first time, we report here a French family affected with a new phenotype composed of an autosomal dominant severe dilated cardiomyopathy with conduction defects or atrial/ventricular arrhythmias, and a specific quadriceps muscle myopathy. In all previously reported cases with both cardiac and neuromuscular involvement, neuromuscular disorders preceded cardiac abnormalities. The screening of the coding sequence of the LMNA gene on all family members was performed and we identified a missense mutation (R377H) in the lamin A/C gene that cosegregated with the disease in the family. Cell transfection experiments showed that the R377H mutation leads to mislocalization of both lamin and emerin. These results were obtained in both muscular (C2C12) and non-muscular cells (COS-7). This new phenotype points out the wide spectrum of neuromuscular and cardiac manifestations associated with lamin A/C mutations, with the functional consequence of this mutation seemingly associated with a disorganization of the lamina.
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Charron P, Komajda M. Genes and their polymorphisms in mono- and multifactorial cardiomyopathies: towards pharmacogenomics in heart failure. Pharmacogenomics 2002; 3:367-78. [PMID: 12052144 DOI: 10.1517/14622416.3.3.367] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Cardiomyopathies are diseases of the myocardium associated with cardiac dysfunction, and are classified as dilated cardiomyopathy (DCM), hypertropic cardiomyopathy (HCM) and restrictive cardiomyopathy. Heart failure and sudden death are the two major complications. Also, since DCM is the primary indication for heart transplantation and HCM the primary cause of sudden death in young athletes, the socioeconomic impact of these diseases is important. Recently, the role of the genetic background in both monogenic and multifactorial cardiomyopathies has been studied, which has led to a better understanding of the underlying mechanisms that promote the development and progression of these diseases. Preliminary data suggest interactions between pharmacological treatment and genetic polymorphisms, which appear to be the first steps towards the application of pharmacogenetics in heart failure.
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Affiliation(s)
- Philippe Charron
- Department of Cardiology and Genetics Laboratory, Association Claude Bernard, Université Paris VI, Hôpital Pitié-Salpêtrière, Paris, France.
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Abstract
Heart failure is a major health problem and is associated with a high mortality and morbidity. Recently, the role of the genetic background in the onset and development of the disease has been evidenced in both heart failure with and without systolic dysfunction, and in familial and non-familial forms of this condition. Familial forms of dilated cardiomyopathy are more frequent than previously thought. Various modes of inheritance and phenotypes have been reported and this condition appears genetically highly heterogenous. Five genes (dystrophin, cardiac actin, desmin, lamin A/C and delta-sarcoglycan), and additional loci, have been identified in families in which dilated cardiomyopathy is isolated or associated with other cardiac or non-cardiac symptoms. It has been postulated that the molecular defect involved could lead to abnormal interactions between cytoskeletal proteins, responsible either for defect in force transmission or for membrane disruption. More recently, the identification of mutations in genes encoding sarcomeric proteins has led to a second hypothesis in which the disease might also result from a force generation defect. In non-monogenic dilated cardiomyopathy, susceptibility genes (role in the development of the disease) and modifier genes (role in the evolution/prognosis of the disease) have so far been identified. Some data suggest that the efficacy of angiotensin converting enzyme inhibitors, and side-effects, might be related to some genetic polymorphisms, such as the I/D polymorphism of the angiotensin converting enzyme gene. Although preliminary, these data are promising and might be the first step towards application of phamacogenetics in heart failure. This is of paramount importance as the medical treatment of heart failure is characterized by the need for polypharmacy. One of the major challenges of the next millenium, therefore, will be to identify genetic factors which might help define responders to major treatment classes, including angiotensin converting enzyme inhibitors, beta-adrenoreceptor antagonists, angiotensin AT1 receptor antagonists, spironolactone, vasopeptidase inhibitors and endothelin receptor antagonists.
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Affiliation(s)
- P Charron
- Service de Cardiologie, et Association Claude Bernard-Université Paris VI, Hôpital Pitié-Salpêtrière, 47-83, Boulevard de l'Hôpital, 75013, Paris, France
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Abstract
Heart failure is a major health problem and is associated with a high mortality and morbidity. Recently, the role of the genetic background in the onset and the development of the disease has been evidenced in both heart failure with and without systolic dysfunction, and in familial and non familial forms of this condition. Several genes and loci are know identified as responsible for dilated cardiomyopathies and for hypertrophic cardiomyopathies in familial and monogenic forms. Susceptibility genes and modifier genes are also studied in nonfamilial forms of dilated cardiomyopathies. The analysis of genetic factors that predispose to heart failure looks promising. It should allow to better understand the underlying mechanisms that promote the development and the progression of the disease, to identify subjects at risk for the disease who would benefit of an early medical management and promote the development of pharmacogenetics.
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Affiliation(s)
- P Charron
- Service de cardiologie, CHU Pitié-Salpêtrière, 47, boulevard de l'Hôpital, 75013 Paris, France.
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Sylvius N, Tesson F, Gayet C, Charron P, Bénaïche A, Peuchmaurd M, Duboscq-Bidot L, Feingold J, Beckmann JS, Bouchier C, Komajda M. A new locus for autosomal dominant dilated cardiomyopathy identified on chromosome 6q12-q16. Am J Hum Genet 2001; 68:241-6. [PMID: 11085912 PMCID: PMC1234920 DOI: 10.1086/316929] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2000] [Accepted: 11/06/2000] [Indexed: 01/19/2023] Open
Abstract
Dilated cardiomyopathy (DCM) is a heart-muscle disease characterized by ventricular dilatation and impaired heart contraction and is heterogeneous both clinically and genetically. To date, 12 candidate disease loci have been described for autosomal dominant DCM. We report the identification of a new locus on chromosome 6q12-16 in a French family with 9 individuals affected by the pure form of autosomal dominant DCM. This locus was found by using a genomewide search after exclusion of all reported disease loci and genes for DCM. The maximum pairwise LOD score was 3.52 at recombination fraction 0.0 for markers D6S1644 and D6S1694. Haplotype construction delineated a region of 16.4 cM between markers D6S1627 and D6S1716. This locus does not overlap with two other disease loci that have been described in nonpure forms of DCM and have been mapped on 6q23-24 and 6q23. The phospholamban, malic enzyme 1-soluble, and laminin-alpha4 genes were excluded as candidate genes, using single-strand conformation polymorphism or linkage analysis.
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Affiliation(s)
- N. Sylvius
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - F. Tesson
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - C. Gayet
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - P. Charron
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - A. Bénaïche
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - M. Peuchmaurd
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - L. Duboscq-Bidot
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - J. Feingold
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - J. S. Beckmann
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - C. Bouchier
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
| | - M. Komajda
- Laboratoire Génétique et Insuffisance Cardiaque, Association Claude Bernard/Université Paris VI, and Service de Cardiologie, Pavillon Rambuteau, Groupe hospitalier Pitié-Salpêtrière, IFR 14 “Coeur, Muscles et Vaisseaux,” and Unité de Recherches, INSERM U393, Paris; Service de Cardiologie, Hôpital de la Croix Rousse, Lyon; and URA 1922/Généthon, Evry, France
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