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Association between HLA-DRB1 alleles and tuberculosis: a meta-analysis
Genetics and Molecular Research : GMR
|December 5, 2015
Summary
Certain human leukocyte antigen (HLA)-DRB1 alleles, specifically DRB1*03 and DRB1*07, appear to offer protection against tuberculosis (TB) susceptibility. Further research with larger sample sizes is needed to confirm these findings on HLA-DRB1 and TB risk.
Area of Science:
- Immunogenetics
- Infectious Diseases
Background:
- Human leukocyte antigen (HLA)-DRB1 alleles are implicated in tuberculosis (TB) susceptibility, but previous studies have yielded inconsistent results.
- Existing research often suffers from small sample sizes, limiting definitive conclusions regarding the association between specific HLA-DRB1 alleles and TB risk.
Purpose of the Study:
- To conduct a meta-analysis to clarify the relationship between HLA-DRB1 alleles and susceptibility to tuberculosis (TB).
- To consolidate data from multiple studies to provide a more robust assessment of HLA-DRB1's role in TB.
Main Methods:
- Systematic literature review to identify relevant studies on HLA-DRB1 alleles and TB susceptibility.
- Meta-analysis of data from fifteen eligible studies, calculating odds ratios (ORs) and 95% confidence intervals (CIs) for specific HLA-DRB1 alleles.
Main Results:
- The frequencies of two HLA-DRB1 alleles, DRB1*03 and DRB1*07, were found to be significantly decreased in individuals with TB.
- DRB1*03 showed an OR of 0.78 (95% CI: 0.67–0.95) and DRB1*07 showed an OR of 0.81 (95% CI: 0.68–0.96), suggesting a protective effect.
Conclusions:
- The findings suggest that HLA-DRB1*03 and HLA-DRB1*07 alleles may confer a protective effect against tuberculosis susceptibility.
- Larger, well-designed studies are recommended to further elucidate the association between these HLA-DRB1 alleles and TB risk.
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