title: HLA antigens and Bf allotypes in lichen sclerosus et atrophicus.
abstract: A study of the HLA-A, B and DR antigens and properdin factor B allotypes of 26 patients with lichen sclerosus et atrophicus and a normal control population showed an increase in the HLA-Aw31 antigen only. However, when the HLA-A and B frequencies were combined with the results of a previous independent study a significant increase in both HLA-Aw31 and HLA-B40 was noted. These findings suggest an association between lichen sclerosus et atrophicus and the HLA system.
mesh_terms: D011415:Complement Factor B; D004792:Enzyme Precursors; D005260:Female; D006680:HLA Antigens; D015234:HLA-A Antigens; D015235:HLA-B Antigens; D059947:HLA-B40 Antigen; D006801:Humans; D012871:Skin Diseases / Q000276:immunology*; D014845:Vulvar Diseases / Q000276:immunology*
chemical_list: D004792:Enzyme Precursors; D006680:HLA Antigens; D015234:HLA-A Antigens; C069527:HLA-A31 antigen; D015235:HLA-B Antigens; D059947:HLA-B40 Antigen; D011415:Complement Factor B