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Individuals who are homozygous for the 2282del4 and R501X filaggrin null mutations do not always develop dermatitis and complete long-term remission is possible.

    Home Publications Individuals who are homozygous for the 2282del4 and R501X filaggrin null mutations do not always develop dermatitis and complete long-term remission is possible.
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    Individuals who are homozygous for the 2282del4 and R501X filaggrin null mutations do not always develop dermatitis and complete long-term remission is possible.

    By Dansk Børne Astma Center | Publications | Comments are Closed | 11 marts, 2012 | 0

    J Eur Acad Dermatol Venereol. 2012 Mar
    Thyssen JP, Carlsen BC, Bisgaard H, Giwercman C, Johansen JD, Linneberg A, Meldgaard M, Szecsi PB, Stender S, Menné T.

    Abstract
    BACKGROUND:
    About 8-10% of the general population in Europe carry a null mutation in the filaggrin gene which is associated with early onset of atopic dermatitis as well as persistence into adulthood. No studies have investigated whether individuals with the homozygous filaggrin null genotype always develop dermatitis.

    OBJECTIVES:
    The aim of this study was to describe the natural history of individuals with no filaggrin expression.

    MATERIALS:
    Three study populations were included: (i) a random sample of 3335 subjects aged 18-69 years from the general population in Copenhagen who underwent general health examination; (ii) a total of 499 patients seen in our dermatitis clinic since 2009 and who were filaggrin genotyped as a part of the routine diagnostic work up; and (iii) a prospective, longitudinal, birth cohort study of 411 children born to mothers with a history of asthma. Filaggrin genotyping was performed for the 2282del4 and R501X mutations.

    RESULTS:
    Filaggrin homozygous/compound heterozygous individuals accounted for 0.3% of adults, 3% of dermatitis patients and 0.7% of children. Respectively, one of nine adults and one of three children never experienced dermatitis until now. All hospital patients had atopic dermatitis with onset during (early) childhood. Year-long complete remission was observed in half of patients.

    CONCLUSIONS:
    The natural history of individuals with the filaggrin null genotype is fairly good in the sense that they may not develop dermatitis at all, and if they do, they may experience complete remission.

    PMID: 21501248

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