title: Papillon-Lefèvre syndrome: analysis of HLA antigens.
abstract: OBJECTIVE
  Papillon-Lefèvre syndrome (PLS) is a rare disease associated with prepubertal periodontitis. Our previous studies demonstrated that three unrelated patients with PLS showed the similar antigen-specific immune responses to Actinobacillus actinomycetemcomitans. The initiation of antigen-specific immune responses was involved with human leukocyte antigens (HLA) on antigen-presenting cells. The aim of this study was to examine HLA haplotypes in the three patients with PLS.
  
  
  METHODS
  The three PLS patients, their mothers and the father of one patient participated in this study. HLA class I and class II antigens were determined serologically and DNA typing for DRB1 and DQB1 was performed using the restriction fragment length polymorphism-polymerase chain reaction method.
  
  
  RESULTS
  The distribution of serologic HLA haplotypes, in two of three patients, was found to be quite similar. The DNA typing revealed that DRB1*0406, DRB1*08032, DQB1*0302, DQB1*06011 genotypes were shared in the two patients. The probability of sharing these four DNA types in unrelated individuals was nearly 1:40,000 in the Japanese population.
  
  
  CONCLUSIONS
  Our results suggest that HLA antigen may be included as a possible host factor in the pathogenesis of PLS and that a genetically controlled immune response may account for an increased susceptibility to periodontal infection.
authors.affiliation: Department of Periodontology, Faculty of Dentistry, Tokyo Medical and Dental University, Tokyo, Japan. nitta.peri@dent.tmd.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Nitta
authors.forename: H
authors.initials: H
authors.lastname: Kato
authors.forename: M
authors.initials: M
authors.lastname: Umeda
authors.forename: S
authors.initials: S
authors.lastname: Kuwata
authors.forename: I
authors.initials: I
authors.lastname: Ishikawa
mesh_terms: D010520:Aggressive Periodontitis / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D005838:Genotype; D006680:HLA Antigens / Q000235:genetics*; D006683:HLA-DQ Antigens / Q000235:genetics; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics; D059811:HLA-DRB1 Chains; D006239:Haplotypes / Q000235:genetics*; D015395:Histocompatibility Antigens Class I / Q000235:genetics; D000949:Histocompatibility Antigens Class II / Q000235:genetics; D006801:Humans; D007125:Immunogenetics; D008297:Male; D010214:Papillon-Lefevre Disease / Q000235:genetics / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D015395:Histocompatibility Antigens Class I; D000949:Histocompatibility Antigens Class II