Results 11 to 20 of about 2,332 (142)

Familial Normokalemic Periodic Paralysis Associated With Mutation in the SCN4A p.M1592V

Frontiers in Neurology, 2018
Periodic paralysis (PP) is an uncommon inherited disorder causing recurrent episodes of muscle weakness, with an incidence of 0.001%. Normokalemic periodic paralysis (NormoKPP) as the rarest subtype of PP contains both familial and sporadic.
Chao Fu, Zhenyu Wang, Libo Wang, Jia Li, Qiuling Sang, Jiajun Chen, Ling Qi, Hui Jin, Xiaoyang Liu   +8 more
doaj   +2 more sources

Paralysis Periodica Paramyotonica Caused by SCN4A Arg1448Cys Mutation [PDF]

Journal of the Formosan Medical Association, 2006
Paralysis periodica paramyotonica is an overlapping disease that shares the features of paramyotonia characteristic of paramyotonia congenita (PC) and periodic paralysis characteristic of hyperkalemic periodic paralysis.
Wei-Chih Hsu, Yung-Chuan Huang, Chung-Wei Wang, Chia-Hsiang Hsueh, Ling-Ping Lai, Jiann-Horng Yeh   +5 more
doaj   +2 more sources

Possible role of SCN4A skeletal muscle mutation in apnea during seizure

Epilepsia Open, 2019
SCN4A gene mutations cause a number of neuromuscular phenotypes including myotonia. A subset of infants with myotonia‐causing mutations experience severe life‐threatening episodic laryngospasm with apnea.
Dilşad Türkdoğan, Emma Matthews, Sunay Usluer, Aslı Gündoğdu, Kayıhan Uluç, Roope Mannikko, Michael G. Hanna, Sanjay M. Sisodiya, Hande S. Çağlayan   +8 more
doaj   +2 more sources

Idiopathic generalized epilepsy in a family with SCN4A‐related myotonia

Epilepsia Open
Objectives Myotonia is a clinical sign typical of a group of skeletal muscle channelopathies, the non‐dystrophic myotonias. These disorders are electrophysiologically characterized by altered membrane excitability, due to specific genetic variants in ...
Mariagrazia Talarico, Francesco Fortunato, Audrey Labalme, Louis Januel, Nicolas Chatron, Damien Sanlaville, Ilaria Sammarra, Monica Gagliardi, Radha Procopio, Paola Valentino, Grazia Annesi, Gaetan Lesca, Antonio Gambardella   +12 more
doaj   +2 more sources

Clinical and Molecular Spectrum of Myotonia and Periodic Paralyses Associated With Mutations in SCN4A in a Large Cohort of Italian Patients [PDF]

Frontiers in Neurology, 2020
Background: Four main clinical phenotypes have been traditionally described in patients mutated in SCN4A, including sodium-channel myotonia (SCM), paramyotonia congenita (PMC), Hypokaliemic type II (HypoPP2), and Hyperkaliemic/Normokaliemic periodic ...
Lorenzo Maggi, Raffaella Brugnoni, Eleonora Canioni, Paola Tonin, Veronica Saletti, Patrizia Sola, Stefano Cotti Piccinelli, Lara Colleoni, Paola Ferrigno, Antonella Pini, Riccardo Masson, Fiore Manganelli, Daniele Lietti, Liliana Vercelli, Giulia Ricci, Claudio Bruno, Giorgio Tasca, Antonio Pizzuti, Antonio Pizzuti, Alessandro Padovani, Carlo Fusco, Elena Pegoraro, Lucia Ruggiero, Sabrina Ravaglia, Gabriele Siciliano, Lucia Morandi, Raffaele Dubbioso, Tiziana Mongini, Massimiliano Filosto, Irene Tramacere, Renato Mantegazza, Pia Bernasconi   +31 more
doaj   +3 more sources

Case report: SCN4A p.R1135H gene variant in combination with thyrotoxicosis causing hypokalemic periodic paralysis [PDF]

Frontiers in Neurology, 2023
Hypokalemic periodic paralysis (HPP) is a heterogeneous group of diseases characterized by intermittent episodes of delayed paralysis of skeletal muscle with episodes of hypokalemia, caused by variants in CACNA1S or SCN4A genes, or secondary to ...
Zhi Zhang, Banghui Xiao
doaj   +2 more sources

TUBA4A Pathogenic Variant Manifesting With Adulthood-Onset Genetic Myasthenic Syndrome, Myopathy, and Infertility. [PDF]

Eur J Neurol
ABSTRACT Objectives TUBA4A pathogenic variants are associated with ALS, frontotemporal dementia, spastic ataxia, spasticity, ataxia, Parkinson's disease, female infertility, macrothrombocytopenia, and myopathy. Four recently reported patients with TUBA4A neonatal/childhood onset myopathy had also a decrement on repetitive nerve stimulation (RNS), but ...
Milone M, Nicolau S, Niu Z, Liewluck T, Sorenson EJ, Shen XM, Harper CM, Litchy WJ.   +7 more
europepmc   +2 more sources

Functional and Structural Characterization of ClC-1 and Na_v1.4 Channels Resulting from CLCN1 and SCN4A Mutations Identified Alone and Coexisting in Myotonic Patients

Cells, 2021
Non-dystrophic myotonias have been linked to loss-of-function mutations in the ClC-1 chloride channel or gain-of-function mutations in the Nav1.4 sodium channel. Here, we describe a family with members diagnosed with Thomsen’s disease. One novel mutation
Oscar Brenes, Raffaella Barbieri, Melissa Vásquez, Rebeca Vindas-Smith, Jeffrey Roig, Adarli Romero, Gerardo del Valle, Luis Bermúdez-Guzmán, Sara Bertelli, Michael Pusch, Fernando Morales   +10 more
doaj   +2 more sources

SCN4A-related congenital myopathy in a Han Chinese patient: A case report and literature review

Heliyon
SCN4A mutations have been shown to be associated with myotonia, paramyotonia congenita, and periodic paralyses. More recently, loss-of-function variants in the SCN4A gene were also noted to be associated with rarer, autosomal recessive forms of ...
Han-Chih Hencher Lee, Bun Sheng, Ling Yin Hung   +2 more
exaly   +3 more sources

High-dose flecainide for symptomatic relief in paramyotonia congenita/severe neonatal episodic laryngospasm due to SCN4A G1306E: a case report [PDF]

Journal of Medical Case Reports
Background Severe neonatal episodic laryngospasm has been previously reported in multiple patients with the heterozygous pathogenic variant G1306E in SCN4A.
Vanessa Ogueri, Jessica Chong, Melissa Fleming, Kara Simpson, Elizabeth Sherwin, Diana Bharucha-Goebel, Christopher Spurney   +6 more
doaj   +2 more sources