Serum reactivity in dermatitis herpetiformis: an international multicentre study

Katharina Boch, Florian Heck, Christoph M. Hammers, Emiliano Antiga, Marzia Caproni, David Juhl, Stephanie Goletz, Orsolya N. Horváth, Laura Huilaja, Stanislav Khil'chenko, Christian Sina, Kaisa Tasanen, Snejina Vassileva, Wolfgang Schlumberger, Detlef Zillikens, Martin Shahid, Kossara Drenovska, John J. Zone, Kamilla Koszorú, Kai FechnerCornelia Dähnrich, Inke R. König, Enno Schmidt*

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

Background: Dermatitis herpetiformis (DH) is a rare gluten-induced skin disorder characterized predominantly by IgA autoantibodies against endomysium, tissue transglutaminase (TG2/tTG), epidermal transglutaminase (TG3/eTG) and deamidated gliadin. To date, circulating autoantibody reactivity has not been systematically described. Objectives: Characterization of serum reactivities in DH. Methods: This multicentre international study analysed sera from 242 patients with DH taken at the time of initial diagnosis. DH-specific IgA and IgG serum autoantibodies were analysed by indirect immunofluorescence (IF) on monkey oesophagus, and by enzyme-linked immunosorbent assay (ELISA) based on recombinant TG2/tTG, TG3/eTG and deamidated gliadin (GAF3X). Results: IgA indirect IF microscopy on monkey oesophagus revealed the highest reactivity (84.3%; specificity 100%) followed by IgA TG2/tTG ELISA (78.5%, specificity 99.0%), IgA TG3/eTG ELISA (72.7%, specificity 95.0%) and IgA GAF3X ELISA (69.0%, specificity 98.5%). Conclusions: Serum IgA and IgG autoantibodies against endomysium, TG2/tTG, TG3/eTG and deamidated gliadin are highly prevalent in DH. Indirect IF microscopy on monkey oesophagus (IgA) provides the highest diagnostic accuracy that can be further enhanced by 4.5% when combined with IgA TG2/tTG ELISA.

OriginalspracheEnglisch
ZeitschriftClinical and Experimental Dermatology
Jahrgang49
Ausgabenummer1
Seiten (von - bis)53-57
Seitenumfang5
ISSN0307-6938
DOIs
PublikationsstatusVeröffentlicht - 19.12.2023

Strategische Forschungsbereiche und Zentren

  • Forschungsschwerpunkt: Infektion und Entzündung - Zentrum für Infektions- und Entzündungsforschung Lübeck (ZIEL)
  • Zentren: Center for Research on Inflammation of the Skin (CRIS)

DFG-Fachsystematik

  • 205-19 Dermatologie
  • 204-05 Immunologie

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