Revised nomenclature and classification of inherited ichthyoses: results of the First Ichthyosis Consensus Conference in Sorèze 2009.

Abstract

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 Sorèze, 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.

• Authors: Vinzenz Oji, Gianluca Tadini, Masashi Akiyama, Claudine Blanchet Bardon, Christine Bodemer, Emmanuelle Bourrat, Philippe Coudiere, John J DiGiovanna, Peter Elias, Judith Fischer, Philip Fleckman, Michal Gina, John Harper, Takashi Hashimoto, Ingrid Hausser, Hans Christian Hennies, Daniel Hohl, Alain Hovnanian, Akemi Ishida-Yamamoto, Witold K Jacyk, Sancy Leachman, Irene Leigh, Juliette Mazereeuw-Hautier, Leonard Milstone, Fanny Morice-Picard, Amy S Paller, Gabriele Richard, Matthias Schmuth, Hiroshi Shimizu, Eli Sprecher, Maurice Van Steensel, Alain Taïeb, Jorge R Toro, Pierre Vabres, Anders Vahlquist, Mary Williams, Heiko Traupe
• Journal: Journal of the American Academy of Dermatology (J Am Acad Dermatol) Vol. 63 Issue 4 Pg. 607-41 (Oct 2010) ISSN: 1097-6787 [Electronic] United States
• PMID: 20643494 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)
• Copyright: Copyright © 2010 American Academy of Dermatology, Inc. All rights reserved.

Chemical References

• Dermatologic Agents

Topics

• Adolescent
• Adult
• Child
• Congresses as Topic
• Dermatologic Agents (therapeutic use)
• Female
• France
• Gene Expression Regulation
• Genetic Predisposition to Disease
• Humans
• Ichthyosiform Erythroderma, Congenital (classification, drug therapy, genetics)
• Ichthyosis (classification)
• Infant
• Infant, Newborn
• Male
• Practice Guidelines as Topic (standards)
• Prognosis
• Severity of Illness Index
• Terminology as Topic
• Young Adult