Human Leukocyte antigen-DQB1 Alleles Are Not Associated With Schizophrenia in Kuwaiti Arabs

Psychiatry Clin Neurosci. 2004 Jun;58(3):236-9. doi: 10.1111/j.1440-1819.2004.01225.x.


Schizophrenia is among the most severe and debilitating of psychiatric disorders and has a complex mode of inheritance. A susceptibility locus has been identified on chromosome 6 and some association studies involving human leukocyte antigen (HLA) genes have reported diverse results. The objective of the present study was to determine if there is an association between HLA-DQB1 alleles and schizophrenia in Kuwaiti Arabs. The frequency of HLA-DQB1 alleles was determined in a cohort of 195 Kuwaiti Arabs consisting of 81 schizophrenia patients and 114 ethnically matched healthy controls, using a polymerase chain reaction-sequence specific primers method. A total of nine DQB1 alleles were identified in this Kuwaiti cohort. The most prevalent DQB1 alleles in Kuwaiti schizophrenia patients were *0601 (28%), *0201 (23%) and *0501 (16%), respectively. However, no significant difference in the allele frequency was detected between schizophrenia patients and the controls. The DQB1*0602 allele, which has been negatively associated in African-Americans in previous reports, was not detected in the present Kuwaiti schizophrenia patients or controls.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Alleles
  • Arabs
  • Cohort Studies
  • DNA / genetics
  • Female
  • Gene Frequency
  • HLA-DQ Antigens / genetics*
  • HLA-DQ beta-Chains
  • Humans
  • Kuwait
  • Male
  • Middle Aged
  • Reverse Transcriptase Polymerase Chain Reaction
  • Schizophrenia / genetics*


  • HLA-DQ Antigens
  • HLA-DQ beta-Chains
  • HLA-DQB1 antigen
  • DNA