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Thevenon, Julien; Laurent, Gabriel; Ader, Flavie; Laforêt, Pascal; Klug, Didier; Duva Pentiah, Anju; Gouya, Laurent; Maurage, Claude Alain; Kacet, Salem; Eicher, Jean-Christophe; Albuisson, Juliette; Desnos, Michel; Bieth, Eric; Duboc, Denis; Martin, Laurent; Réant, Patricia; Picard, François; Bonithon-Kopp, Claire; Gautier, Elodie; Binquet, Christine; Thauvin-Robinet, Christel; Faivre, Laurence; Bouvagnet, Patrice; Charron, Philippe; Richard, Pascale
Europace (London, England), 04/2017, Letnik: 19, Številka: 4Journal Article
Mutations in PRKAG2, the gene encoding for the γ2 subunit of 5'-AMP-activated protein kinase (AMPK), are responsible for an autosomal dominant glycogenosis with a cardiac presentation, associating hypertrophic cardiomyopathy (HCM), ventricular pre-excitation (VPE), and progressive heart block. The aim of this study was to perform a retrospective time-to-event study of the clinical manifestations associated with PRKAG2 mutations. A cohort of 34 patients from 9 families was recruited between 2001 and 2010. DNA were sequenced on all exons and flanking sequences of the PRKAG2 gene using Sanger sequencing. Overall, four families carried the recurrent p.Arg302Gln mutation, and the five others carried private mutations among which three had never been reported. In the total cohort, at 40 years of age, the risk of developing HCM was 61%, VPE 70%, conduction block 22%, and sudden cardiac death (SCD) 20%. The global survival at 60 years of age was 66%. Thirty-two per cent of patients (N = 10) required a device implantation (5 pacemakers and 5 defibrillators) at a median age of 66 years, and two patients required heart transplant. Only one patient presented with significant skeletal muscle symptoms. No significant differences regarding the occurrence of VPE, ablation complications, or death incidence were observed between different mutations. This study of patients with PRKAG2 mutations provides a more comprehensive view of the natural history of this disease and demonstrates a high risk of cardiac complications. Early recognition of this disease appears important to allow an appropriate management.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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