HIV-1 Escape Variants and AIDS Progression
Author Information
Author(s): Asquith Becca
Primary Institution: Imperial College London
Hypothesis
To what extent does HIV-1 escape from CTL contribute to HLA-associated AIDS progression?
Conclusion
The study found that the selective advantage of HIV-1 escape variants is significantly associated with the rate of progression to AIDS.
Supporting Evidence
- CTL responses restricted by protective HLA class I alleles recognized epitopes where escape variants had a weak evolutionary selective advantage.
- A third of between-individual variation in HLA-associated disease risk was predicted by the selective advantage of escape variants.
- Variants escaping CTL responses restricted by protective alleles had a significantly lower selective advantage.
Takeaway
This study shows that when HIV changes to escape the immune system, it can make people get sick faster.
Methodology
The study combined an analysis of escape events in HIV-1 infected individuals with population-level analysis of CTL responses and HIV-1 sequence data.
Limitations
The study is limited by the relatively small number of detailed longitudinal escape cases analyzed.
Participant Demographics
150 HIV-1 infected individuals were studied.
Statistical Information
P-Value
0.008
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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