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  • Title: Filaggrin gene polymorphisms in Iranian ichthyosis vulgaris and atopic dermatitis patients.
    Author: Hassani B, Isaian A, Shariat M, Mollanoori H, Sotoudeh S, Babaei V, Ziaali A, Teimourian S.
    Journal: Int J Dermatol; 2018 Dec; 57(12):1485-1491. PubMed ID: 30246302.
    Abstract:
    BACKGROUND: Filaggrin is a key structural epidermal protein in terminal differentiation and formation of skin barrier. The important role of filaggrin and its effects in various cutaneous and noncutaneous disorders initiated a cascade of considerable research in recent years. Loss-of-function mutations in FLG, the human gene encoding profilaggrin/filaggrin, is the cause of the common skin condition ichthyosis vulgaris (IV) and major genetic predisposing factor for atopic dermatitis (AD). Several null mutations in the FLG gene that lead to a decrease or absence of filaggrin in skin and predispose these conditions have been described. OBJECTIVE: The aim of this study was to investigative genetic polymorphism of FLG in Iranian patients with IV and AD. METHODS: In the current study, we carried out full sequencing of the entire FLG coding region in 30 IV patients and 30 AD patients, and also 60 healthy controls. RESULTS: In our research, we identified 43 variants reported previously and two novel variants. CONCLUSION: In our study, in the AD and IV patients, loss-of-function FLG mutation was not found. This means that another mechanism other than FLG nonsense mutation is involved in the pathogenesis of these patients.
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