alexa Association between an interleukin-4 promoter polymorphism and the acquisition of CXCR4 using HIV-1 variants.
Infectious Diseases

Infectious Diseases

Journal of AIDS & Clinical Research

Author(s): Kwa D, van Rij RP, BoeserNunnink B, Vingerhoed J, Schuitemaker H

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Abstract BACKGROUND: A polymorphism at position -589 in the interleukin 4 (IL-4) promoter region was recently described as being associated with the presence of syncytium-inducing CXCR4 using (X4) HIV-1 variants. OBJECTIVE: To study the IL-4 promoter polymorphism -589T in relation to HIV-1 disease progression and acquisition of X4 HIV-1 variants. DESIGN AND METHODS: Retrospective longitudinal study among 342 HIV-1-infected homosexual men who participated in the Amsterdam Cohort study. Polymerase chain reaction was used in combination with restriction analysis to identify IL-4 promoter genotypes. RESULTS: Carriers of the -589T allele (either -589 C/T heterozygotes or -589 T/T homozygotes), showed comparable progression to AIDS [relative hazard (RH), 0.94; P = 0.71], and survival (RH IL-4 -589 C/T or T/T, 0.94; P = 0.69) as carriers of the -589 C/C genotype (the reference group). In contrast to a previous study, we found that the -589T polymorphism was associated with a delayed acquisition of X4 HIV-1 variants (RH, 0.56; P = 0.02 for IL-4 -589 C/T or T/T) and a reduced number of CCR5 expressing memory CD4 T cells. CONCLUSION: In the Amsterdam Cohort of homosexual men with HIV infection, the IL-4 -589T promoter polymorphism was associated with a delayed acquisition of X4 variants but did not affect overall disease progression. This article was published in AIDS and referenced in Journal of AIDS & Clinical Research

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