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A novel homozygous mutation in the WNK1/HSN2 gene causing hereditary sensory neuropathy type 2
Anna Potulska-Chromik1, Dagmara Kabzińska, Marta Lipowska
1Department of Neurology, Medical University of Warsaw, Poland.
Abstract:
Hereditary sensory and autonomic neuropathy type 2 is a rare disorder caused by recessive mutations in the WNK1/HSN2 gene located on chromosome 12p13.33. Phenotype of the patients is characterized by severe sensory loss affecting all sensory modalities. We report a novel homozygous Lys179fsX182 (HSN2); Lys965fsX968 (WNK1/HSN2) mutation causing an early childhood onset hereditary sensory and autonomic neuropathy type 2, with acromutilations in upper and lower limbs, and autonomic dysfunction. To the best of our knowledge this is the first genetically proven case of hereditary sensory and autonomic neuropathy type 2 originating from East Europe.
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