title: Association of HLA-DR11 with the anaphylactoid reaction caused by nonsteroidal anti-inflammatory drugs.
abstract: BACKGROUND
  Several HLA alleles have been associated with asthma induced by nonsteroidal anti-inflammatory drugs (NSAIDs). The existence of HLA markers linked to other NSAID-induced reactions, such as cutaneous and anaphylactoid reactions, has not been established.
  
  
  OBJECTIVE
  The purpose of our work was to study the HLA-DRB1 and HLA-DQB1 alleles in patients with cutaneous and anaphylactoid reactions caused by NSAIDs.
  
  
  METHODS
  We have analyzed 114 HLA DRB1 and 26 HLA-DQB1 alleles in 21 patients with anaphylactoid reactions caused by NSAIDs, 47 patients who had exclusively cutaneous reactions during single-blind, placebo-controlled oral challenges with NSAIDs, and 167 tolerant control subjects (29 of whom had also had an IgE-mediated anaphylaxis to different agents). HLA-DRB1 and HLA-DQB1 alleles were typed by the polymerase chain reaction sequence-specific primers method with genomic DNA.
  
  
  RESULTS
  The frequency of HLA-DR11 alleles was 58.8% in the anaphylactoid reaction group, compared with 15.9% in the NSAID-tolerant healthy control subjects (OR, 7:3; 95% confidence interval, 2.8-19.0; P <.02) and 6.3% in the group of the patients with a tolerance for NSAIDs and with IgE-mediated anaphylaxis (OR, 18.75; 95% confidence interval, 4.3-81.1; P <.004). No differences were observed among HLA-DR11 alleles analyzed. There were no significant HLA-DQB1 associations with NSAID-induced anaphylactoid reactions. Patients with cutaneous reactions had HLA frequencies that did not differ significantly from the tolerant control subjects.
  
  
  CONCLUSIONS
  The HLA-DRB1*11 alleles showed a positive association with NSAID-induced anaphylactoid reactions.
authors: Unidad de Alergia, Hospital Ciudad de Jaén, Jaén, Spain.
authors: J
authors: J
authors: Quiralte
authors: F
authors: F
authors: Sánchez-García
authors: M J
authors: MJ
authors: Torres
authors: C
authors: C
authors: Blanco
authors: R
authors: R
authors: Castillo
authors: N
authors: N
authors: Ortega
authors: F R
authors: FR
authors: de Castro
authors: P
authors: P
authors: Pérez-Aciego
authors: T
authors: T
authors: Carrillo
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000483:Alleles; D000707:Anaphylaxis / Q000139:chemically induced* / Q000235:genetics; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000009:adverse effects*; D003875:Drug Eruptions / Q000209:etiology / Q000235:genetics; D004342:Drug Hypersensitivity / Q000235:genetics* / Q000276:immunology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006683:HLA-DQ Antigens / Q000235:genetics; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics*; D059810:HLA-DR Serological Subtypes; D059811:HLA-DRB1 Chains; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D012867:Skin / Q000276:immunology / Q000473:pathology
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059810:HLA-DR Serological Subtypes; C080766:HLA-DR11 antigen; D059811:HLA-DRB1 Chains