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[HLA polymorphism and Behçet's disease in Moroccan population]

N Bennani1, O Atouf, N Benseffaj

  • 1Unité d'immunologie, service de transfusion sanguine et d'hémovigilance, hôpital Ibn Sina, CHU de Rabat, Rabat, Maroc. pegy_nai@yahoo.fr

Pathologie-Biologie
|November 29, 2008
PubMed

Insights

The HLA-B51 allele is strongly associated with Behçet disease in the Moroccan population. Other human leukocyte antigen (HLA) alleles may influence susceptibility or protection against this inflammatory condition.

Area of Science:

  • Immunogenetics
  • Human Leukocyte Antigen (HLA) complex
  • Autoimmune diseases

Context:

  • Behçet disease is a multisystemic inflammatory disorder with a complex etiology.
  • Genetic factors, particularly HLA alleles, are known to influence susceptibility to Behçet disease.
  • The Moroccan population represents a distinct genetic background for studying HLA associations.

Purpose:

  • To investigate the association between specific human leukocyte antigen (HLA) class I and II alleles and Behçet disease in a Moroccan cohort.
  • To determine the correlation of HLA allele distribution with clinical manifestations and sex in patients with Behçet disease.

Summary:

  • The study identified HLA-B51 as a significant predisposing allele for Behçet disease in Moroccans, with specific alleles like -A2, -B5102, -B58, and -B72 also showing predisposition.
  • Conversely, alleles A23, -A33, -B18, -B41, and -B49 demonstrated a negative correlation, suggesting a protective role.
  • Sex-specific associations were observed, with alleles A2 and -B72 linked to males, and -A68 and -B58 to females, while -B51 and -B5102 were associated with both genders.
  • Clinical manifestations were linked to specific alleles: B51 with mucous issues, B72 with vasculitis, and B58 with cutaneous symptoms.
  • The haplotype A2-B51 showed a strong positive correlation with Behçet disease.
  • No significant association was found for DRB1* alleles, but DQB1*02 appeared to offer protection.

Impact:

  • This research elucidates the specific genetic landscape of Behçet disease in the Moroccan population, highlighting the crucial role of HLA-B51.
  • Findings contribute to understanding the genetic underpinnings of Behçet disease, potentially aiding in risk stratification and personalized medicine approaches.
  • Identifies potential genetic markers for disease susceptibility and protection, paving the way for further etiological research.
Abstract

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