KIR/HLA Protection in HIV Disease
Author Information
Author(s): Qi Ying, Martin Maureen P, Gao Xiaojiang, Jacobson Lisa, Goedert James J, Buchbinder Susan, Kirk Gregory D, O'Brien Stephen J, Trowsdale John, Carrington Mary
Primary Institution: Laboratory of Genomic Diversity, SAIC-Frederick, Inc., National Cancer Institute
Hypothesis
Does the compound genotype KIR3DS1/HLA-B Bw4-80I provide protection against HIV disease and opportunistic infections?
Conclusion
The KIR3DS1/Bw4-80I genotype offers dual protection against HIV viral load and opportunistic infections, but not against AIDS-related malignancies.
Supporting Evidence
- The KIR3DS1/Bw4-80I genotype was associated with lower HIV viral load set points.
- Protection against opportunistic infections was significant in multiple analyses.
- No significant protection was observed against AIDS-related malignancies.
- Adjusting for other protective alleles did not alter the strength of KIR3DS1/Bw4-80I protection.
- Survival analysis confirmed delayed progression to opportunistic infections.
- Participants with KIR3DS1/Bw4-80I had a lower risk of developing opportunistic infections.
- The study included a diverse cohort of HIV-infected individuals.
- Findings highlight the complex role of host genetics in HIV disease progression.
Takeaway
Some people have a special gene combination that helps them fight off HIV and infections that can happen when your immune system is weak, but it doesn't help with certain cancers.
Methodology
The study analyzed data from 1,184 HIV-1 infected individuals to assess the protective effects of the KIR3DS1/Bw4-80I genotype against AIDS-defining illnesses.
Potential Biases
Potential confounding factors related to the genetic diversity of the populations studied.
Limitations
The study was conducted before the introduction of highly active antiretroviral therapy, which may limit the applicability of the findings to current treatment contexts.
Participant Demographics
The study included 799 European Americans, 332 African Americans, and 53 individuals of other ethnicities.
Statistical Information
P-Value
0.003–0.005
Confidence Interval
OR = 0.36–0.4
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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