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Vol. 222, No. 1, 2011
Issue release date: February 2011
Section title: Case Report
Dermatology 2011;222:10–14
(DOI:10.1159/000322619)

COL7A1 Recessive Mutations in Two Siblings with Distinct Subtypes of Dystrophic Epidermolysis Bullosa: Pruriginosa versus Nails Only

Pruneddu S. · Castiglia D. · Floriddia G. · Cottoni F. · Zambruno G.
aDepartment of Dermatology, University of Sassari, Sassari, and bLaboratory of Molecular and Cell Biology, Istituto Dermopatico dell’Immacolata, IRCCS, Rome, Italy

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Article / Publication Details

First-Page Preview
Abstract of Case Report

Received: 7/22/2010
Accepted: 10/25/2010
Published online: 12/29/2010

Number of Print Pages: 5
Number of Figures: 3
Number of Tables: 0

ISSN: 1018-8665 (Print)
eISSN: 1421-9832 (Online)

For additional information: http://www.karger.com/DRM

Abstract

Dystrophic epidermolysis bullosa (DEB) is a rare, clinically heterogeneous, blistering genodermatosis inherited as either autosomal dominant or recessive trait. All DEB forms are caused by mutations in the COL7A1 gene, which encodes for type VII collagen, the major component of the anchoring fibrils ensuring epithelial-mesenchymal adhesion. Major determinants of clinical heterogeneity in DEB are COL7A1 mutation types and their consequences at mRNA and protein levels; nevertheless, siblings with the same genetic alterations can manifest highly variable clinical signs. Here, we report novel compound heterozygous recessive COL7A1 missense mutations in 2 siblings presenting different DEB clinical subtypes. Our findings document the rare occurrence of recessive inheritance for the nails only DEB variant and emphasize the role of acquired phenotype-modifying factors in DEB pruriginosa pathogenesis.


Article / Publication Details

First-Page Preview
Abstract of Case Report

Received: 7/22/2010
Accepted: 10/25/2010
Published online: 12/29/2010

Number of Print Pages: 5
Number of Figures: 3
Number of Tables: 0

ISSN: 1018-8665 (Print)
eISSN: 1421-9832 (Online)

For additional information: http://www.karger.com/DRM


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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