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  • Title: A compound heterozygous mutation of the SPINK5 gene in a Taiwanese boy with Netherton syndrome.
    Author: Chao SC, Tsai YM, Lee JY.
    Journal: J Formos Med Assoc; 2003 Jun; 102(6):418-23. PubMed ID: 12923596.
    Abstract:
    Netherton syndrome (NS) is a severe, autosomal, recessive ichthyosis. It is characterized by congenital ichthyosiform erythroderma (CIE), trichorrhexis invaginata (TI) - a distinctive hair-shaft anomaly, and atopic diathesis. Recently, pathogenic mutations were identified in serine protease inhibitor Kazal-type 5 (SPINK5), the gene that encodes lympho-epithelial Kazal-type-related inhibitor (LEKTI), a recently identified type of serine protease inhibitor involved in the regulation of skin barrier formation and immunity. Here we report the mutation analysis of a 7-year-old Taiwanese boy with NS manifesting CIE with pathognomic ichthyosis linearis circumflexa and TI. Direct DNA sequencing of SPINK5 demonstrated a compound heterozygous mutation in the proband, 2260A>T (K754X) in exon 24 and 2468delA in exon 26. The former is a novel mutation and was detected in the mother. The latter mutation was detected in the father and has been previously reported in several European families. Both mutations are expected to result in premature termination codons. Mutation analysis could provide a reliable prenatal diagnosis of this lethal ichthyosis.
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