HLA-DRB1*15 confers susceptibility to juvenile SLE but is not associated with disease presentation: an Egyptian Study

Immunol Invest. 2010 Jan;39(3):235-44. doi: 10.3109/08820131003615480.

Abstract

The etiology of Systemic lupus erythematosus (SLE) seems to be multifactorial including environmental as well as genetic factors. Major histocompatibility complex (MHC) genes especially HLA-DRB1 and HLA-DQB1 are strongly implicated in susceptibility to SLE. Moreover ethnicity has been found to have a significant role in both disease susceptibility and disease expression. This study was carried out to determine HLA-DRB1 allele association with SLE susceptibility and disease presentation in Egyptian children with juvenile onset SLE. HLA-DRB1 allele typing was done using polymerase chain reaction-sequence-specific oligonucleotide probe for 65 juvenile Egyptian SLE patients and 150 healthy controls. p-values were corrected for the number of the alleles tested (Pc). HLA-DRB1*15 g allele was significantly increased in SLE children versus controls (OR = 4.76; 95% CI = 1.83-12.4; p = 0.001 and Pc = 0.012). No HLA-DRB1 allele was found to be statistically significant associated with musculoskeletal, cutaneous, hematologic, cardiac or neuropsychiatric manifestations in SLE patients (p > 0.05). Moreover no statistically significant association was found between HLA-DRB1 alleles and clinical presentation or histologic classes of lupus nephritis. The current work suggests that HLA-DRB1*15g allele may be a susceptibility allele in Egyptian children with SLE but is not related to clinical presentation of SLE.

MeSH terms

  • Adolescent
  • Age of Onset
  • Alleles
  • Child
  • DNA Mutational Analysis
  • Egypt
  • Female
  • Follow-Up Studies
  • Genetic Association Studies
  • Genetic Predisposition to Disease
  • HLA-DR Antigens / genetics*
  • HLA-DR Antigens / immunology
  • HLA-DRB1 Chains
  • Histocompatibility Testing
  • Humans
  • Lupus Erythematosus, Systemic / epidemiology
  • Lupus Erythematosus, Systemic / genetics*
  • Lupus Erythematosus, Systemic / immunology
  • Lupus Erythematosus, Systemic / pathology
  • Lupus Erythematosus, Systemic / physiopathology*
  • Lupus Nephritis
  • Male
  • Polymorphism, Genetic

Substances

  • HLA-DR Antigens
  • HLA-DRB1 Chains
  • HLA-DRB1*15 antigen