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Tmem79/Matt is the matted mouse gene and is a predisposing gene for atopic dermatitis in human subjects

Research output: Contribution to journalArticle

Sean P. Saunders, Christabelle S.M. Goh, Sara J. Brown, Colin N.A. Palmer, Rebecca M. Porter, Christian Cole, Linda E. Campbell, Marek Gierlinski, Geoffrey J. Barton, Georg Schneider, Allan Balmain, Alan R. Prescott, Stephan Weidinger, Hansjörg Baurecht, Michael Kabesch, Christian Gieger, Young Ae Lee, Roger Tavendale, Somnath Mukhopadhyay, Stephen W. Turner & 14 more Vishnu B. Madhok, Frank M. Sullivan, Caroline Relton, John Burn, Simon Meggitt, Catherine H. Smith, Michael A. Allen, Jonathan N.W.N. Barker, Nick J. Reynolds, Heather J. Cordell, Alan D. Irvine, W. H.Irwin McLean, Aileen Sandilands, Padraic G. Fallon

Original languageEnglish
Pages (from-to)1121-1129
Number of pages9
JournalJournal of Allergy and Clinical Immunology
Volume132
Issue number5
Early online date29 Sep 2013
DOIs
Publication statusPublished - Nov 2013

King's Authors

Abstract

Background Atopic dermatitis (AD) is a major inflammatory condition of the skin caused by inherited skin barrier deficiency, with mutations in the filaggrin gene predisposing to development of AD. Support for barrier deficiency initiating AD came from flaky tail mice, which have a frameshift mutation in Flg and also carry an unknown gene, matted, causing a matted hair phenotype. Objective We sought to identify the matted mutant gene in mice and further define whether mutations in the human gene were associated with AD. Methods A mouse genetics approach was used to separate the matted and Flg mutations to produce congenic single-mutant strains for genetic and immunologic analysis. Next-generation sequencing was used to identify the matted gene. Five independently recruited AD case collections were analyzed to define associations between single nucleotide polymorphisms (SNPs) in the human gene and AD. Results The matted phenotype in flaky tail mice is due to a mutation in the Tmem79/Matt gene, with no expression of the encoded protein mattrin in the skin of mutant mice. Mattft mice spontaneously have dermatitis and atopy caused by a defective skin barrier, with mutant mice having systemic sensitization after cutaneous challenge with house dust mite allergens. Meta-analysis of 4,245 AD cases and 10,558 population-matched control subjects showed that a missense SNP, rs6694514, in the human MATT gene has a small but significant association with AD. Conclusion In mice mutations in Matt cause a defective skin barrier and spontaneous dermatitis and atopy. A common SNP in MATT has an association with AD in human subjects.

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