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RESEARCH PRODUCT

Revised nomenclature and classification of inherited ichthyoses: Results of the First Ichthyosis Consensus Conference in Soreze 2009

Jorge R. ToroAkemi Ishida-yamamotoAmy S. PallerGabriele RichardMatthias SchmuthMatthias SchmuthHiroshi ShimizuW. K. JacykClaudine Blanchet BardonPierre VabresSancy A. LeachmanMichal GinaVinzenz OjiPhilip FleckmanAlain TaiebChristine BodemerPhilippe CoudiereFanny Morice-picardJuliette Mazereeuw-hautierPeter M. EliasJohn I. HarperGianluca TadiniEmmanuelle BourratJudith FischerMasashi AkiyamaDaniel HohlMary L. WilliamsLeonard M. MilstoneHans Christian HenniesEli SprecherJohn J. DigiovannaHeiko TraupeAnders VahlquistIngrid HausserTakashi HashimotoMaurice A.m. Van SteenselAlain HovnanianAlain HovnanianIrene M. Leigh

subject

AdultMalemedicine.medical_specialtyCongenital ichthyosiform erythrodermaAdolescentautosomal recessive congenital ichthyosisDermatologySeverity of Illness Indexhistologymendelian disorders of cornificationYoung AdultCYP4F22Terminology as TopicCongenital ichthyosisMedicineHumansGenetic Predisposition to DiseasegeneticsABCA12Childbiologybusiness.industryIchthyosisInfant NewbornIchthyosisInfantkeratinopathic ichthyosisLamellar ichthyosisHarlequin IchthyosisCongresses as TopicIchthyosiform Erythroderma Congenitalepidermolytic ichthyosismedicine.diseasePrognosisDermatologyultrastructureGene Expression RegulationPractice Guidelines as Topicbiology.proteinFemaleDermatologic AgentsFrancesuperficial epidermolytic ichthyosisbusinessIchthyosis vulgaris

description

Background: Inherited ichthyoses belong to a large, clinically and etiologically heterogeneous group of mendelian disorders of cornification; typically involving the entire integument. Over the recent years, much progress has been made defining their molecular causes. However, there is no internationally accepted classification and terminology. Objective: We sought to establish a consensus for the nomenclature and classification of inherited ichthyoses. Methods: The classification project started at the First World Conference on Ichthyosis in 2007. A large international network of expert clinicians, skin pathologists, and geneticists entertained an interactive dialogue over 2 years, eventually leading to the First Ichthyosis Consensus Conference held in Soreze, France, on January 23 and 24, 2009, where subcommittees on different issues proposed terminology that was debated until consensus was reached. Results: It was agreed that currently the nosology should remain clinically based. "Syndromic" versus "nonsyndromic" forms provide a useful major subdivision. Several clinical terms and controversial disease names have been redefined: eg, the group caused by keratin mutations is referred to by the umbrella term, "keratinopathic ichthyosis"-under which are included epidermolytic ichthyosis, superficial epidermolytic ichthyosis, and ichthyosis Curth-Macklin. "Autosomal recessive congenital ichthyosis" is proposed as an umbrella term for the harlequin ichthyosis, lamellar ichthyosis, and the congenital ichthyosiform erythroderma group. Limitations: As more becomes known about these diseases in the future, modifications will be needed. Conclusion: We have achieved an international consensus for the classification of inherited ichthyosis that should be useful for all clinicians and can serve as reference point for future research. (I Am Acad Dermatol 2010;63:607-41.)

10.1016/j.jaad.2009.11.020https://doi.org/10.1016/j.jaad.2009.11.020