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Pediatr Neurol
December 2024
Department of Neurology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina.
Background: Andersen-Tawil syndrome (ATS) is a rare autosomal dominant disorder characterized by a classic symptom triad, including periodic paralysis, ventricular arrhythmias with associated prolonged QT interval and U waves, and dysmorphic facial and skeletal features. Pathogenic variants of the KCNJ2 gene are linked to ATS.
Methods: We present two siblings with the same pathogenic mutation and facial characteristic of hypotelorism, yet with intrafamilial and sex-specific variability.
Mitochondrion
September 2020
St Vincent's Hospital Melbourne Mitochondrial and Autoimmune Neurological Disorders Laboratory, Department of Clinical Neurosciences and Neurological Research, 5th Floor Daly Wing, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia.
Leber hereditary optic neuropathy (LHON) is a neurodegenerative disorder characterised by bilateral, painless, subacute, central vision loss caused by pathogenic sequence variants in mitochondrial DNA (mtDNA). Over the course of 20 years, 734 people were systematically screened by our diagnostic laboratory for suspected LHON or for being at risk of LHON, with 98 found to harbour one of the three primary pathogenic mtDNA variants. Detection incidences were: 0.
View Article and Find Full Text PDFEur J Paediatr Neurol
January 2018
Abteilung Neuropädiatrie, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307 Dresden, Germany. Electronic address:
Aicardi-Goutières syndrome (AGS) is a hereditary inflammatory encephalopathy resulting in severe neurological damage in the majority of cases. We report on two siblings with AGS6 due to compound heterozygosity for a known and a novel mutation in the ADAR gene and a strikingly variable phenotype. The first sibling presented at 12 months of age with a subacute encephalopathy following a mild respiratory infection.
View Article and Find Full Text PDFBrain
March 2016
3 Unit of Neuromuscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, 'Bambino Gesù' Children's Hospital, IRCCS, Rome, Italy
This study focused on the molecular characterization of patients with leukoencephalopathy associated with a specific biochemical defect of mitochondrial respiratory chain complex III, and explores the impact of a distinct magnetic resonance imaging pattern of leukoencephalopathy to detect biallelic mutations in LYRM7 in patients with biochemically unclassified leukoencephalopathy. 'Targeted resequencing' of a custom panel including genes coding for mitochondrial proteins was performed in patients with complex III deficiency without a molecular genetic diagnosis. Based on brain magnetic resonance imaging findings in these patients, we selected additional patients from a database of unclassified leukoencephalopathies who were scanned for mutations in LYRM7 by Sanger sequencing.
View Article and Find Full Text PDFBrain Dev
May 2016
Department of Neuropaediatrics, Timone Hospital, Marseille Teaching Hospital, France.
Introduction: The Mitofusin 2 gene (MFN2), which encodes a mitochondrial membrane protein, is known to be the first cause of autosomal dominant Charcot-Marie-Tooth disease type 2 (CMT2) with early onset. This gene is involved in typical CMT2A and in more atypical phenotypes as optic atrophy or spastic paraplegia. CMT2 refers to inherited axonal polyneuropathy, which associates progressive peripheral motor and sensory neuropathy, a family history consistent mainly with autosomal dominant inheritance, and normal nerve conduction velocities.
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