We devised a simple method using a TaqMan fluorogenic probe for detection of a prevalent G6PT1 mutation W118R among Japanese patients with glycogen storage disease type Ib. The W118R mutation was detected in three of six newly diagnosed Japanese patients. The W118R-negative alleles were screened for causative mutations by sequencing analysis, revealing five novel mutations. The genetic tests using the simple TaqMan method coupled with sequencing analysis would facilitate the early diagnosis of this disorder.
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http://dx.doi.org/10.1016/j.ymgme.2003.12.004 | DOI Listing |
Eur J Neurol
January 2025
Groupe Hospitalier Pitié-Salpêtrière, Institut de Myologie, AP-HP, Sorbonne Université, Paris, France.
Background: Monoclonal gammopathy (MG) has been reported in association with numerous neurological disorders but the spectrum of MG-associated myopathies remains poorly described.
Objective: To report a newly acquired myopathy associated with MG.
Methods: Three adult patients with the same phenotype from two French referral centers were prospectively analyzed.
Mol Genet Genomic Med
January 2025
Group for Rare Disease Research and Therapeutics Development, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Republic of Serbia.
Introduction: Chronic endoplasmic reticulum (ER) stress and increased apoptosis are involved in the pathogenesis of glycogen storage disease Ib (GSD Ib), whereas small molecule phenylbutyrate (4-PBA) showed the capability of reducing ER stress-induced apoptosis. The objective was to generate an in vitro system in which capability of small molecules (SMs) to influence ER stress and apoptosis could be screened at the expression level.
Methods: G6PT-deficient FlpInHEK293 cell line was created and validated using the CRISPR/Cas9 knockout method.
Case Rep Rheumatol
January 2025
Department of Rheumatology, Royal Wolverhampton NHS Trust, Wolverhampton, UK.
McArdle disease or glycogen storage disease Type V is a genetic condition caused by PYGM gene mutations leading to exercise intolerance and fatigability. The condition most commonly presents in childhood. In rare cases, patients have presented with late-onset McArdle disease.
View Article and Find Full Text PDFMol Genet Metab Rep
March 2025
The Shmunis School of Biomedicine and Cancer Research, The George S. Wise Faculty for Life Sciences, Sagol School of Neurosciences, Tel Aviv University, 6997801 Tel Aviv, Israel.
Dihydrolipoamide dehydrogenase (DLD) deficiency is an autosomal recessive disorder characterized by a functional disruption in several critical mitochondrial enzyme complexes, including pyruvate dehydrogenase and α-ketoglutarate dehydrogenase. Despite DLD's pivotal role in cellular energy metabolism, detailed molecular and metabolic consequences of DLD deficiency (DLDD) remain poorly understood. This study represents the first in-depth multi-omics analysis, specifically metabolomic and transcriptomic, of fibroblasts derived from a DLD-deficient patient compound heterozygous for a common Ashkenazi Jewish variant (c.
View Article and Find Full Text PDFJ Health Econ Outcomes Res
January 2025
Ultragenyx Pharmaceutical Inc., Novato, CA, USA.
Glycogen storage disease type Ia (GSDIa) is a rare inherited disorder resulting in potentially life-threatening hypoglycemia, metabolic abnormalities, and complications often requiring hospitalization. This retrospective database analysis assessed the complications, resource utilization, and costs in a large cohort of patients with GSDIa. We conducted a retrospective cohort study of GSDIa patients and matched non-GSDIa comparators utilizing the PharMetrics® Plus database.
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