A novel mutation in a large French-Canadian family with LGMD1B.
Nicolas Chrestian,Paul N. Valdmanis,Najmeddine Echahidi,Denis Brunet,Jean-Pierre Bouchard,Peter Gould,Guy A. Rouleau,Jean Champagne,Nicolas Dupré +8 more
TLDR
A large French Canadian family with the LGMD 1B phenotype and a cardiac conduction disease phenotype that carried a new mutation in the LMNA gene is identified and its full phenotypic spectrum is defined.Abstract:
Contexte : La dystrophie musculaire des ceintures type 1 B est une maladie autosomique dominante caracterisee par un debut tardif, une atteinte des muscles proximaux associee a des complications cardiaques comme des blocs de conduction auriculo-ventriculaires, une cardiomyopathie congestive et une mort subite. Objectif: Le but de cette etude etait de definir l'expression phenotypiques d'une nouvelle mutation du gene LMNA qui cause la dystrophie musculaire des ceintures de type 1B. Methodes : Nous avons identifie une grande famille canadienne-francaise presentant le phenotype LGMD 1B accompagne d'un trouble de conduction cardiaque, qui etait porteuse d'une nouvelle mutation du gene LMNA. Nous definissons le spectre de ses variations phenotypiques dans cette famille au moyen d'une evaluation neurologique et cardiaque complete, d'une biopsie musculaire et d'etudes de l'ARN et de l'ADN. Resultats : Le cas index et 12 apparentes a risque ont ete evalues. En tout, nous avons identifie sept porteurs d'une nouvelle mutation du gene LMNA (IVS9-3C>G). Les trois patients qui presentaient des symptomes avaient tous une atteinte cardiaque, mais seulement deux presentaient une faiblesse proximale. La seule biopsie musculaire disponible a montre une expression normale de la lamine A/C localisee a l'enveloppe nucleaire. L'etude de l'ARN a montre une perte de transcription de l'exon 10 causee par une mutation d'epissage IVS9-3C a G. Conclusions: Ce diagnostic a des implications importantes pour les patients atteints et leur fratrie parce qu'ils peuvent eventuellement avoir besoin d'un stimulateur cardiaque.read more
Citations
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Journal ArticleDOI
Novel LMNA mutations in patients with Emery‐Dreifuss muscular dystrophy and functional characterization of four LMNA mutations
Juergen Scharner,Charlotte A. Brown,Matthew Bower,Susan T. Iannaccone,Ismail A. Khatri,Diana M. Escolar,Erynn S. Gordon,Kevin J. Felice,Carol A. Crowe,Carla Grosmann,Matthew N. Meriggioli,Alexander Asamoah,Ora Gordon,Viola F. Gnocchi,Juliet A. Ellis,Jerry R. Mendell,Peter S. Zammit +16 more
TL;DR: This study significantly augments the number of EDMD patients on the database and describes 15 novel mutations that underlie EDMD, which will contribute to establishing genotype–phenotype correlations.
Journal ArticleDOI
Identification of pathogenic gene mutations in LMNA and MYBPC3 that alter RNA splicing.
Kaoru Ito,Parth N Patel,Joshua M. Gorham,Barbara McDonough,Barbara McDonough,Steven R. DePalma,Steven R. DePalma,Emily E. Adler,Lien Lam,Calum A. MacRae,Syed M. Mohiuddin,Diane Fatkin,Diane Fatkin,Diane Fatkin,Christine E. Seidman,Christine E. Seidman,Christine E. Seidman,Jonathan G. Seidman +17 more
TL;DR: To improve recognition of pathogenic splice-altering variants in AD disorders, enhanced computational tools were developed to prioritize VUS and a cell-based minigene splicing assay was developed to confirm aberrant splicing.
Journal ArticleDOI
Lamin A/C mutations in dilated cardiomyopathy.
Frédérique Tesson,Michal Saj,Musfira Mohamed Uvaize,Hannah A. Nicolas,Rafał Płoski,Zofia T. Bilińska +5 more
TL;DR: The current phenotypes observed in LMNA-caused DCM, the results and implications of the cellular and animal models of DCM and the prevailing theories on the pathogenesis of laminopathies are explored.
Journal ArticleDOI
Normal and aberrant splicing of LMNA
TL;DR: The manipulation of LMNA splicing by splice-switching antisense oligonucleotides and its therapeutic potential for the treatment of some laminopathies are discussed.
Journal ArticleDOI
LIMS2 mutations are associated with a novel muscular dystrophy, severe cardiomyopathy and triangular tongues.
Jodi Warman Chardon,Jodi Warman Chardon,Amanda C. Smith,John Woulfe,John Woulfe,E. Pena,Kawan Rakhra,Kawan Rakhra,Carole Dennie,Carole Dennie,Carole Dennie,Chandree L. Beaulieu,Lijia Huang,Jeremy Schwartzentruber,Cynthia Hawkins,Matthew B. Harms,S. Dojeiji,Mei Zhang,Jacek Majewski,Dennis E. Bulman,Kym M. Boycott,David A. Dyment +21 more
TL;DR: This is the first report of mutations in LIMS2 and resulting disruption of the integrin linked kinase (ILK)–LIMS–parvin complex associated with LGMD.
References
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TL;DR: To the Editor: Lamin A/C gene mutations are associated with various disorders, including cardiac abnormalities characterized by atrial fibrillation, conduction-system disturbances, sudden death,...
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