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  • Title: Increased frequency of HLA-DR2 in patients with autoantibodies to epidermolysis bullosa acquisita antigen: evidence that the expression of autoimmunity to type VII collagen is HLA class II allele associated.
    Author: Gammon WR, Heise ER, Burke WA, Fine JD, Woodley DT, Briggaman RA.
    Journal: J Invest Dermatol; 1988 Sep; 91(3):228-32. PubMed ID: 3137269.
    Abstract:
    Epidermolysis bullosa acquisita (EBA) is a chronic blistering disease characterized by circulating and tissue bound IgG auto-antibodies to the basement membrane zone (BMZ) of stratified squamous epithelium. Recent studies have shown that antibodies recognize epitopes present in the noncollagenous carboxyl-terminal domain of type VII collagen, a BMZ matrix protein. Antibodies with identical specificity also have been detected in patients with the rare blistering disease, bullous systemic lupus erythematosus (bullous SLE), suggesting EBA and bullous SLE are immunologically related diseases. In this study we determined the major histo-compatibility antigen types of 29 EBA patients and 6 patients with bullous SLE. Analysis of the results showed HLA-DR2 was significantly increased in both black EBA patients, P = 0.013 (corrected, RR = 4.8) and white EBA patients, P = 0.0008 (corrected, RR = 13.1). Five of the six bullous SLE patients also were positive for the DR2 antigen, P = 0.009. These results show the expression of autoimmunity to type VII collagen is HLA class II allele associated and that EBA and bullous SLE are immunogenetically related diseases.
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