Single-gene neurological disorders account for a significant proportion of the work load of any regional genetics unit. In an attempt to assess the likely impact of recombinant DNA technology on these debilitating diseases, a population prevalence study of the major neurogenetic diseases was carried out in the South Wales region of Great Britain. The minimum overall prevalence of these disorders was estimated to be 58.6/100,000 population.
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http://dx.doi.org/10.1002/ana.410300314 | DOI Listing |
J Neurol
January 2025
Neurological Institute, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.
Objective: This study aims to evaluate our experience in the diagnosis of hereditary ataxias (HAs), to analyze data from a real-world scenario.
Study Design: This is a retrospective, cross-sectional, descriptive study conducted at a single Italian adult neurogenetic outpatient clinic, in 147 patients affected by ataxia with a suspicion of hereditary forms, recruited from November 1999 to February 2024. A stepwise approach for molecular diagnostics was applied: targeted gene panel (TP) next-generation sequencing (NGS) and/or clinical exome sequencing (CES) were performed in the case of inconclusive first-line genetic testing, such as short tandem repeat expansions (TREs) testing for most common spinocerebellar ataxias (SCA1-3, 6-8,12,17, DRPLA), other forms [Fragile X-associated tremor/ataxia syndrome (FXTAS), Friedreich ataxia (FRDA) and mitochondrial DNA-related ataxia, RFC1-related ataxia/CANVAS] or inconclusive phenotype-guided specific single gene sequencing.
Adv Genet (Hoboken)
December 2024
Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET Buenos Aires 1428 Argentina.
Hearing loss is the most common sensory defect in humans, affecting normal communication. In most cases, hearing loss is a multifactorial disorder caused by both genetic and environmental factors, but single-gene mutations can lead to syndromic or non-syndromic hearing loss. Monoallelic variants in , coding for gamma (γ)-actin, are associated with classical Baraitser-Winter Syndrome type 2 (BRWS2, nonsyndromic deafness, and a variety of clinical presentations not fitting the original BRWS2 description or nonsyndromic deafness.
View Article and Find Full Text PDFJAMA Pediatr
December 2024
Department of Child Health, University of Arizona, Phoenix.
Importance: Single gene variants can cause cerebral palsy (CP) phenotypes, yet the impact of genetic diagnosis on CP clinical management has not been systematically evaluated.
Objective: To evaluate how frequently genetic testing results would prompt changes in care for individuals with CP and the clinical utility of precision medicine therapies.
Data Sources: Published pathogenic or likely pathogenic variants in OMIM genes identified with exome sequencing in clinical (n = 1345) or research (n = 496) cohorts of CP were analyzed.
Front Psychiatry
November 2024
Department of Biomedicine, University of Bergen, Bergen, Norway.
Hum Gene Ther
November 2024
Department of Pediatrics, UMass Chan Medical School, Worcester, Massachusetts, USA.
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