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Related Experiment Videos

Racial differences in HLA class II associations with hepatitis C virus outcomes.

C L Thio1, D L Thomas, J J Goedert

  • 1Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD 21231-1001, USA. cthio@jhmi.edu

The Journal of Infectious Diseases
|June 9, 2001
PubMed
Summary
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Human leukocyte antigen (HLA) class II alleles influence hepatitis C virus (HCV) clearance. Specific HLA types like DQB1*0301, DRB1*0101, and DRB1*0301 show ethnic variations in association with HCV infection outcomes.

Area of Science:

  • Immunogenetics
  • Virology
  • Human Leukocyte Antigens (HLA)

Background:

  • CD4 T cell responses mediated by class II HLA are crucial for hepatitis C virus (HCV) clearance.
  • Previous studies linked HLA-DQB1*0301 to viral clearance in a specific ethnic group.

Purpose of the Study:

  • To validate the association of HLA-DQB1*0301 with HCV clearance in a diverse cohort.
  • To identify other class II HLA associations with HCV clearance and persistence across different ethnicities.

Main Methods:

  • Molecular class II HLA typing was performed on 200 subjects who cleared HCV and 374 matched subjects with persistent HCV infection.
  • Statistical analysis, including odds ratios and confidence intervals, was used to assess associations.

Main Results:

Related Experiment Videos

  • HLA-DQB1*0301 showed a weak association with viral clearance overall, but a stronger association in Black subjects.
  • In White subjects, viral clearance was linked to DRB1*0101 and its DQB1*0501 haplotype.
  • Viral persistence in White subjects was associated with DRB1*0301 and its DQB1*0201 haplotype.

Conclusions:

  • Class II HLA alleles play a significant role in the immune response to HCV.
  • Studying genetic associations in ethnically diverse populations is essential for understanding HCV clearance mechanisms.