Flecainide treats a novel KCNJ2 mutation associated with Andersen-Tawil syndrome
نویسندگان
چکیده
Hanora A. Van Ert, BSN, Elise C. McCune, Kate M. Orland, MS, Kathleen R. Maginot, MD, Nicholas H. Von Bergen, MD, Craig T. January, MD, PhD, Lee L. Eckhardt, MD, FHRS From the Cellular and Molecular Arrhythmia Research Program, University of Wisconsin-Madison, Madison, Wisconsin, and University of Wisconsin-Madison Inherited Arrhythmia Clinic, Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin.
منابع مشابه
Biophysical and molecular characterization of a novel de novo KCNJ2 mutation associated with Andersen-Tawil syndrome and catecholaminergic polymorphic ventricular tachycardia mimicry.
BACKGROUND Mutations in KCNJ2, the gene encoding the human inward rectifier potassium channel Kir2.1 (IK1 or IKir2.1), have been identified in Andersen-Tawil syndrome. Andersen-Tawil syndrome is a multisystem inherited disease exhibiting periodic paralysis, cardiac arrhythmias, and dysmorphic features at times mimicking catecholaminergic polymorphic ventricular tachycardia. METHODS AND RESULT...
متن کاملCharacterization of a novel, dominant negative KCNJ2 mutation associated with Andersen-Tawil syndrome.
Andersen-Tawil syndrome is characterized by periodic paralysis, ventricular ectopy, and dysmorphic features. Approximately 60% of patients exhibit loss-of-function mutations in KCNJ2, which encodes the inwardly rectifying K(+) channel pore forming subunit Kir2.1. Here, we report the identification of a novel KCNJ2 mutation (G211T), resulting in the amino acid substitution D71Y, in a patient pre...
متن کاملProtein kinase A-dependent biophysical phenotype for V227F-KCNJ2 mutation in catecholaminergic polymorphic ventricular tachycardia.
BACKGROUND KCNJ2 encodes Kir2.1, a pore-forming subunit of the cardiac inward rectifier current, I(K1). KCNJ2 mutations are associated with Andersen-Tawil syndrome and catecholaminergic polymorphic ventricular tachycardia. The aim of this study was to characterize the biophysical and cellular phenotype of a KCNJ2 missense mutation, V227F, found in a patient with catecholaminergic polymorphic ve...
متن کاملA novel KCNJ2 nonsense mutation, S369X, impedes trafficking and causes a limited form of Andersen-Tawil syndrome.
BACKGROUND Mutations in KCNJ2, a gene encoding the inward rectifier K(+) channel Kir2.1, are associated with Andersen-Tawil syndrome (ATS), which is characterized by (1) ventricular tachyarrhythmias associated with QT (QU)-interval prolongation, (2) periodic paralysis, and (3) dysmorphic features. METHODS AND RESULTS We identified a novel KCNJ2 mutation, S369X, in a 13-year-old boy with promi...
متن کاملElectrocardiogram in Andersen-Tawil Syndrome. New Electrocardiographic Criteria for Diagnosis of Type-1 Andersen-Tawil Syndrome
Andersen - Tawil syndrome (ATS) is an autosomal - dominant or sporadic disorder characterized by ventricular arrhythmias, periodic paralysis, and distinctive facial and skeletal dysmorphism. Mutations in KCNJ2, which encodes the α-subunit of the potassium channel Kir2.1, were identified in patients with ATS. This genotype has been designated as type-1 ATS (ATS1). KCNJ2 mutations are detectable ...
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