The association between single-nucleotide polymorphisms within type 1 interferon pathway genes and human immunodeficiency virus type 1 viral load in antiretroviral-naïve participants.

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    • Source:
      Publisher: BioMed Central Country of Publication: England NLM ID: 101237921 Publication Model: Electronic Cited Medium: Internet ISSN: 1742-6405 (Electronic) Linking ISSN: 17426405 NLM ISO Abbreviation: AIDS Res Ther Subsets: MEDLINE
    • Publication Information:
      Original Publication: [London] : BioMed Central, 2004-
    • Subject Terms:
    • Abstract:
      Background: Human genetic contribution to HIV progression remains inadequately explained. The type 1 interferon (IFN) pathway is important for host control of HIV and variation in type 1 IFN genes may contribute to disease progression. This study assessed the impact of variations at the gene and pathway level of type 1 IFN on HIV-1 viral load (VL).
      Methods: Two cohorts of antiretroviral (ART) naïve participants living with HIV (PLWH) with either early (START) or advanced infection (FIRST) were analysed separately. Type 1 IFN genes (n = 17) and receptor subunits (IFNAR1, IFNAR2) were examined for both cumulated type 1 IFN pathway analysis and individual gene analysis. SKAT-O was applied to detect associations between the genotype and HIV-1 study entry viral load (log10 transformed) as a proxy for set point VL; P-values were corrected using Bonferroni (P < 0.0025).
      Results: The analyses among those with early infection included 2429 individuals from five continents. The median study entry HIV VL was 14,623 (IQR 3460-45100) copies/mL. Across 673 SNPs within 19 type 1 IFN genes, no significant association with study entry VL was detected. Conversely, examining individual genes in START showed a borderline significant association between IFNW1, and study entry VL (P = 0.0025). This significance remained after separate adjustments for age, CD4 + T-cell count, CD4 + /CD8 + T-cell ratio and recent infection. When controlling for population structure using linear mixed effects models (LME), in addition to principal components used in the main model, this was no longer significant (p = 0.0244). In subgroup analyses stratified by geographical region, the association between IFNW1 and study entry VL was only observed among African participants, although, the association was not significant when controlling for population structure using LME. Of the 17 SNPs within the IFNW1 region, only rs79876898 (A > G) was associated with study entry VL (p = 0.0020, beta = 0.32; G associated with higher study entry VL than A) in single SNP association analyses. The findings were not reproduced in FIRST participants.
      Conclusion: Across 19 type 1 IFN genes, only IFNW1 was associated with HIV-1 study entry VL in a cohort of ART-naïve individuals in early stages of their infection, however, this was no longer significant in sensitivity analyses that controlled for population structures using LME.
      (© 2024. The Author(s).)
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    • Grant Information:
      DNRF126 The Danish National Research Foundation
    • Contributed Indexing:
      Keywords: SKAT-O; HIV-1; Host genetics; Pathway analysis; Type 1 interferon; Viral load
    • Accession Number:
      0 (Interferon Type I)
      156986-95-7 (Receptor, Interferon alpha-beta)
      0 (IFNAR1 protein, human)
      0 (IFNAR2 protein, human)
    • Publication Date:
      Date Created: 20240502 Date Completed: 20240503 Latest Revision: 20240521
    • Publication Date:
      20240521
    • Accession Number:
      PMC11067292
    • Accession Number:
      10.1186/s12981-024-00610-x
    • Accession Number:
      38698440