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Hoorntje ET, Bollen IA, Barge-Schaapveld DQ, van Tienen FH, Te Meerman GJ, Jansweijer JA, van Essen AJ, Volders PG, Constantinescu AA, van den Akker PC, van Spaendonck-Zwarts KY, Oldenburg RA, Marcelis CL, van der Smagt JJ, Hennekam EA, Vink A, Bootsma M, Aten E, Wilde AA, van den Wijngaard A, Broers JL, Jongbloed JD, van der Velden J, van den Berg MP, van Tintelen JP. Lamin A/C-Related Cardiac Disease: Late Onset With a Variable and Mild Phenotype in a Large Cohort of Patients With the Lamin A/C p.(Arg331Gln) Founder Mutation. ACTA ACUST UNITED AC 2018; 10:CIRCGENETICS.116.001631. [PMID: 28790152 DOI: 10.1161/circgenetics.116.001631] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 05/08/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Interpretation of missense variants can be especially difficult when the variant is also found in control populations. This is what we encountered for the LMNA c.992G>A (p.(Arg331Gln)) variant. Therefore, to evaluate the effect of this variant, we combined an evaluation of clinical data with functional experiments and morphological studies. METHODS AND RESULTS Clinical data of 23 probands and 35 family members carrying this variant were retrospectively collected. A time-to-event analysis was performed to compare the course of the disease with carriers of other LMNA mutations. Myocardial biopsies were studied with electron microscopy and by measuring force development of the sarcomeres. Morphology of the nuclear envelope was assessed with immunofluorescence on cultured fibroblasts. The phenotype in probands and family members was characterized by atrioventricular conduction disturbances (61% and 44%, respectively), supraventricular arrhythmias (69% and 52%, respectively), and dilated cardiomyopathy (74% and 14%, respectively). LMNA p.(Arg331Gln) carriers had a significantly better outcome regarding the composite end point (malignant ventricular arrhythmias, end-stage heart failure, or death) compared with carriers of other pathogenic LMNA mutations. A shared haplotype of 1 Mb around LMNA suggested a common founder. The combined logarithm of the odds score was 3.46. Force development in membrane-permeabilized cardiomyocytes was reduced because of decreased myofibril density. Structural nuclear LMNA-associated envelope abnormalities, that is, blebs, were confirmed by electron microscopy and immunofluorescence microscopy. CONCLUSIONS Clinical, morphological, functional, haplotype, and segregation data all indicate that LMNA p.(Arg331Gln) is a pathogenic founder mutation with a phenotype reminiscent of other LMNA mutations but with a more benign course.
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Affiliation(s)
| | - Ilse A Bollen
- For the author affiliations, please see the Appendix
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Aryan Vink
- For the author affiliations, please see the Appendix
| | | | - Emmelien Aten
- For the author affiliations, please see the Appendix
| | | | | | - Jos L Broers
- For the author affiliations, please see the Appendix
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Hoorntje ET, van Spaendonck-Zwarts KY, Te Rijdt WP, Boven L, Vink A, van der Smagt JJ, Asselbergs FW, van Wijngaarden J, Hennekam EA, Pinto YM, Lekanne Deprez RH, Barge-Schaapveld DQCM, Bootsma M, Regieli J, Hoedemaekers YM, Jongbloed JDH, van den Berg MP, van Tintelen JP. The first titin (c.59926 + 1G > A) founder mutation associated with dilated cardiomyopathy. Eur J Heart Fail 2017; 20:803-806. [PMID: 29057560 PMCID: PMC5993291 DOI: 10.1002/ejhf.1030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/04/2017] [Indexed: 11/12/2022] Open
Affiliation(s)
- Edgar T Hoorntje
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.,Netherlands Heart Institute, Utrecht, the Netherlands
| | | | - Wouter P Te Rijdt
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Ludolf Boven
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Aryan Vink
- Department of Pathology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | | | - Folkert W Asselbergs
- Department of Cardiology, Division Heart & Lungs, University Medical Centre Utrecht, Utrecht, the Netherlands.,Durrer Centre for Cardiovascular Research, Netherlands Heart Institute, Utrecht, the Netherlands.,Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
| | | | - Eric A Hennekam
- Department of Genetics, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Yigal M Pinto
- Department of Cardiology, Academic Medical Centre, Amsterdam, the Netherlands
| | - Ronald H Lekanne Deprez
- Department of Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | | | - Marianne Bootsma
- Department of Cardiology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Jakub Regieli
- Department of Cardiology, Isala Clinics, Zwolle, the Netherlands.,Heart Clinic, Amsterdam, the Netherlands
| | - Yvonne M Hoedemaekers
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Jan D H Jongbloed
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Maarten P van den Berg
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - J Peter van Tintelen
- Netherlands Heart Institute, Utrecht, the Netherlands.,Department of Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
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Alders M, Hogan BM, Gjini E, Salehi F, Al-Gazali L, Hennekam EA, Holmberg EE, Mannens MMAM, Mulder MF, Offerhaus GJA, Prescott TE, Schroor EJ, Verheij JBGM, Witte M, Zwijnenburg PJ, Vikkula M, Schulte-Merker S, Hennekam RC. Mutations in CCBE1 cause generalized lymph vessel dysplasia in humans. Nat Genet 2010; 41:1272-4. [PMID: 19935664 DOI: 10.1038/ng.484] [Citation(s) in RCA: 197] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Accepted: 10/13/2009] [Indexed: 11/09/2022]
Abstract
Lymphedema, lymphangiectasias, mental retardation and unusual facial characteristics define the autosomal recessive Hennekam syndrome. Homozygosity mapping identified a critical chromosomal region containing CCBE1, the human ortholog of a gene essential for lymphangiogenesis in zebrafish. Homozygous and compound heterozygous mutations in seven subjects paired with functional analysis in a zebrafish model identify CCBE1 as one of few genes causing primary generalized lymph-vessel dysplasia in humans.
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Affiliation(s)
- Marielle Alders
- Department of Clinical Genetics, Academic Medical Centre, Amsterdam, The Netherlands
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De Koning TJ, Sandkuijl LA, De Schryver JE, Hennekam EA, Beemer FA, Houwen RH. Autosomal-recessive inheritance of benign recurrent intrahepatic cholestasis. Am J Med Genet 1995; 57:479-82. [PMID: 7677155 DOI: 10.1002/ajmg.1320570324] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Benign recurrent intrahepatic cholestasis (BRIC) is a rare disorder characterized by recurrent episodes of cholestasis without permanent liver damage. Familial and sporadic cases have been described. Based on existing evidence, both autosomal-recessive and autosomal-dominant inheritance have been considered. We describe a large Dutch pedigree with 4 patients, strongly suggesting autosomal-recessive inheritance.
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Affiliation(s)
- T J De Koning
- Department of Pediatric Gastroenterology, Wilhelmina Children's Hospital, Utrecht, The Netherlands
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