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Published on: October 21, 2014
Perinatal lethal Gaucher disease: a distinct phenotype along the neuronopathic continuum
Michael J Eblan1, Ozlem Goker-Alpan, Ellen Sidransky
1Section on Molecular Neurogenetics, National Institute of Mental Health and Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA.
Abstract:
Gaucher disease, the inherited deficiency of glucocerebrosidase, is characterized by significant genetic and phenotypic heterogeneity. At the extreme end of the phenotypic continuum is the perinatal lethal variant, typically presenting in utero or during the neonatal period as hydrops and/orcongenital ichthyosis, with severe and progressive neurological involvement. Insights from the null-allele Gaucher mouse model contributed to the identification of this distinct phenotype, which has unique epidermal involvement. While multiple mutations are encountered, many affected infants are homozygous for recombinant alleles. The diagnosis is often missed due to the early lethality and the failure to recognize the association between lysosomal disorders and hydrops fetalis. The incidence of severe perinatal Gaucher disease may prove more common than currently appreciated with greater physician awareness of the disorder.
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