title: HLA-A, B, C, DR, MT, and MB antigens in recurrent aphthous stomatitis.
abstract: In this report we have investigated the frequencies of HLA-A, B, C, DR, MT, and MB markers in 26 Sicilian subjects affected by recurrent aphthous stomatitis (RAS) and in 84 healthy controls. Our data show that the frequency of HLA-DR7 antigen is significantly increased in RAS-affected persons (61.5% versus 21.4%; pc less than 0.0025), whereas the B5 antigen frequency is decreased significantly (absent in patients versus 27.3% in controls; pc = 0.04). Thus, present results suggest that HLA-linked genetic factors may play a role in the development of RAS.
mesh_terms: D000328:Adult; D005260:Female; D008040:Genetic Linkage; D006680:HLA Antigens / Q000032:analysis* / Q000235:genetics; D015234:HLA-A Antigens; D015235:HLA-B Antigens; D015236:HLA-C Antigens; D006683:HLA-DQ Antigens; D006684:HLA-DR Antigens; D015809:HLA-DR7 Antigen; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D013281:Stomatitis, Aphthous / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D015234:HLA-A Antigens; D015235:HLA-B Antigens; D015236:HLA-C Antigens; D006683:HLA-DQ Antigens; D006684:HLA-DR Antigens; D015809:HLA-DR7 Antigen; D000949:Histocompatibility Antigens Class II