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  • Title: A novel homozygous mutation disrupting the initiation codon in the SLURP1 gene underlies mal de Meleda in a consanguineous family.
    Author: Shah K, Nasir A, Irfanullah, Shahzad S, Khan S, Ahmad W.
    Journal: Clin Exp Dermatol; 2016 Aug; 41(6):675-679. PubMed ID: 29226984.
    Abstract:
    Mal de Meleda (MDM) is a palmoplantar keratoderma (PPK), characterized by hyperkeratosis of the palms and soles, and keratotic skin lesions. Patients with MDM can develop perioral erythema, keratotic and lichenoid plaques over the joints (including the elbows and knees), nail abnormalities, joint contractures and stiffness, brachydactyly, sclerodactyly, pseudoainhum, and malodorous maceration. MDM is associated with mutations in the SLURP1 gene. We report a consanguineous family in which MDM was inherited in an autosomal recessive manner. Genotyping using microsatellite markers established linkage in the family to the SLURP1 gene, which has been mapped previously to chromosome 8q24.3. Sequence analysis revealed a homozygous missense mutation (c.2T>C, p.Met1Thr) in affected family members. Molecular docking studies using a ZDOCK server predicted disruption of binding of the mutant variant to its target α7-nAChR. This study further supports the previously reported findings that homozygous mutations in the SLURP1 gene cause MDM.
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