HLA-A*02:07 is a protective allele for EBV negative and a susceptibility allele for EBV positive classical Hodgkin lymphoma in China

PLoS One. 2012;7(2):e31865. doi: 10.1371/journal.pone.0031865. Epub 2012 Feb 15.

Abstract

HLA-A2 protects from EBV+ classical Hodgkin lymphoma (cHL) in Western Europe, but it is unknown whether this protective effect also exists in the Chinese population. We investigated the association of HLA-A2 and specific common and well documented HLA-A2 subtypes with EBV stratified cHL patients (n = 161) from the northern part of China. Quantitative-PCR and sequence-based subtyping was performed to identify HLA-A2 positive samples and their subtypes. 67 (42%) of the cHL patients were EBV+. There were no significant differences in percentages of HLA-A2 positivity between cHL and controls (65% vs 66%) and between EBV+ and EBV- cHL patients (70% vs 61%). The frequency distribution of HLA-A2 subtypes was significantly different between EBV stratified cHL subgroups and controls. This difference was most striking for the HLA-A*02:07 type with a frequency of 38% in EBV+ cHL, 8% in EBV- cHL and 20% in controls. Significant differences were also observed for the HLA-A*02:07, HLA-A2 (non-02:07) and the A2-negative typings between EBV+ cHL vs controls (p = 0.028), EBV- cHL vs controls (p = 0.045) and EBV+ vs EBV- cHL cases (p = 2×10(-5)). In conclusion, HLA-A*02:07 is a predisposing allele for EBV+ cHL and a protective allele for EBV- cHL in the northern Chinese population.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Asian People / genetics*
  • Case-Control Studies
  • DNA / genetics
  • Epstein-Barr Virus Infections / genetics
  • Epstein-Barr Virus Infections / immunology
  • Gene Frequency
  • Genetic Predisposition to Disease*
  • Genotype
  • HLA-A2 Antigen / genetics*
  • HLA-A2 Antigen / immunology
  • Herpesvirus 4, Human / isolation & purification
  • Herpesvirus 4, Human / pathogenicity*
  • Hodgkin Disease / genetics*
  • Hodgkin Disease / immunology*
  • Hodgkin Disease / virology
  • Humans
  • Real-Time Polymerase Chain Reaction

Substances

  • HLA-A2 Antigen
  • DNA