title: Relapsing polychondritis: clinical and immunogenetic analysis of 62 patients.
abstract: OBJECTIVE
  In this study we describe clinical and immunogenetic findings in 62 unselected patients with relapsing polychondritis.
  
  
  METHODS
  In a multicenter study, clinical data of 26 (41.9%) female and 36 (58.1%) male patients were collected. HLA-DR specificities were identified in 60, and the frequencies were compared with those in healthy controls.
  
  
  RESULTS
  The median age at the time of diagnosis was 46.6 years (range 17 to 86). 58 (93.5%) patients had auricular chondritis, 31 (50.0%) ocular symptoms, 35 (56.5%) nasal involvement. Involvement of joints (53.2%), respiratory system (30.6%), skin (24.2%), cardiovascular system (22.6%), central nervous system (9.7%), and kidneys (6.5%) was found as well. 22 (35.5%) patients had associated diseases such as systemic lupus erythematosus or rheumatoid arthritis. Susceptibility to relapsing polychondritis was significantly associated with HLA-DR4 (p < 0.001). There was no difference in the frequency or distribution of DRB1*04 subtype alleles between patients and healthy controls. The extent of organ involvement was negatively associated with HLA-DR6 (p < 0.011).
  
  
  CONCLUSIONS
  Immunogenetic findings as well as similarities and overlapping clinical symptoms with other autoimmune or rheumatic diseases suggest that immunological mechanisms play a major role in the pathogenesis of relapsing polychondritis.
authors.affiliation: Department of Internal Medicine I, University of Regensburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Zeuner
authors.forename: R H
authors.initials: RH
authors.lastname: Straub
authors.forename: G
authors.initials: G
authors.lastname: Rauh
authors.forename: E D
authors.initials: ED
authors.lastname: Albert
authors.forename: J
authors.initials: J
authors.lastname: Schölmerich
authors.forename: B
authors.initials: B
authors.lastname: Lang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001168:Arthritis / Q000150:complications; D002318:Cardiovascular Diseases / Q000150:complications; D004427:Ear Diseases / Q000150:complications; D005128:Eye Diseases / Q000150:complications; D005260:Female; D005334:Fever / Q000150:complications; D005500:Follow-Up Studies; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D007674:Kidney Diseases / Q000150:complications; D008297:Male; D008875:Middle Aged; D009422:Nervous System Diseases / Q000150:complications; D009668:Nose Diseases / Q000150:complications; D011081:Polychondritis, Relapsing / Q000150:complications / Q000175:diagnosis / Q000276:immunology*; D015431:Weight Loss / Q000276:immunology
chemical_list: D006684:HLA-DR Antigens