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Hydroxysteroid 17-Beta Dehydrogenase Type 10 Disease in Siblings

Richardson, Annely ; Berry, Gerard T. ; Garganta, Cheryl ; Abbott, Mary-Alice

JIMD Reports, Volume 32, 2017, Vol.32, p.25-32 [Periódico revisado por pares]

Germany: Springer Berlin / Heidelberg

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  • Título:
    Hydroxysteroid 17-Beta Dehydrogenase Type 10 Disease in Siblings
  • Autor: Richardson, Annely ; Berry, Gerard T. ; Garganta, Cheryl ; Abbott, Mary-Alice
  • Assuntos: Autism Spectrum Disorder ; Medical genetics ; Metabolism ; Neuroactive Steroid ; Newborn Screening ; Paediatric medicine ; R130C Mutation ; V65A Mutation
  • É parte de: JIMD Reports, Volume 32, 2017, Vol.32, p.25-32
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Communicated by: Johannes Häberle
  • Descrição: Hydroxysteroid 17-beta dehydrogenase type 10 (HSD10) deficiency (HSD10 disease) is a rare X-linked neurodegenerative condition caused by abnormalities in the HSD17B10 gene. A total of 10 mutations have been reported in the literature since 2000. Described phenotypes include a severe neonatal or progressive infantile form with hypotonia, choreoathetosis, seizures, cardiomyopathy, neurodegeneration, and death, as well as an attenuated form with variable regression. Here we present the second report of a c.194T>C (p.V65A) mutation in two half-brothers with a clinical phenotype characterized by neurodevelopmental delay, choreoathetosis, visual loss, cardiac findings, and behavioral abnormalities, with regressions now noted in the older sibling. Neither has experienced a metabolic crisis. Both of the siblings had normal tandem mass spectroscopy analysis of their newborn screening samples. The older brother’s phenotype may be complicated by the presence of a 3q29 microduplication. Diagnosis requires a high index of suspicion, as the characteristic urine organic acid pattern may escape detection. The exact pathogenic mechanism of disease remains to be elucidated, but may involve the non-dehydrogenase functionalities of the HSD10 protein. Our report highlights clinical features of two patients with the less fulminant phenotype associated with a V65A mutation, compares the reported phenotypes to date, and reviews recent findings regarding the potential pathophysiology of this condition. Summary Sentence Hydroxysteroid 17-beta dehydrogenase type 10 (HSD10) disease (HSD10 disease) is a rare X-linked neurodegenerative condition with a variable clinical phenotype; diagnosis requires a high index of suspicion.
  • Títulos relacionados: JIMD Reports
  • Editor: Germany: Springer Berlin / Heidelberg
  • Idioma: Inglês
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