A child with localized vulval pemphigoid and IgG autoantibodies targeting the C-terminus of collagen XVII/BP180

H. Schumann*, U. Amann, K. Tasanen, S. Müller, D. Zillikens, D. Metze, T. Luger, L. Bruckner-Tuderman, G. Bonsmann

*Korrespondierende/r Autor/-in für diese Arbeit
19 Zitate (Scopus)

Abstract

Localized vulval pemphigoid of childhood (LVPC) has previously been reported in six girls. Clinical features and immunopathological data have suggested it to be a morphological variant of bullous pemphigoid. Epitope targets of the autoantibodies of these patients have not been defined in detail. We describe a 9-year-old girl with possible cicatricial LVPC and circulating IgG antibodies directed against native collagen XVII/UBP180, its 120-kDa soluble ectodomain and against the C-terminus of collagen XVII/BP180. No reactivity was detected towards the NC16A domain of collagen XVII/BP180. Linear IgG and C3 deposits were found along the cutaneous basement membrane zone. On 1 mol/L salt-split skin, IgG autoantibodies were shown to bind to the epidermis, and the HLA type II allele DQB1*0301, a marker with significantly increased occurrence in patients with ocular and oral cicatricial pemphigoid, was identified in this patient. Our data suggest that LVPC is a variant of bullous pemphigoid in which direct immunofluorescence microscopy combined with immunoblot analysis can deliver valuable diagnostic information for differential diagnosis. However, differentiation between the scarring and non-scarring course of the disease cannot be made with the present diagnostic markers and therefore careful follow-up of patients with LVPC is required.

OriginalspracheEnglisch
ZeitschriftBritish Journal of Dermatology
Jahrgang140
Ausgabenummer6
Seiten (von - bis)1133-1138
Seitenumfang6
ISSN0007-0963
DOIs
PublikationsstatusVeröffentlicht - 1999

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