Abstract
Human genetic variation contributes to differences in susceptibility to HIV-1 infection. To search for novel host resistance factors, we performed a genome-wide association study (GWAS) in hemophilia patients highly exposed to potentially contaminated factor VIII infusions. Individuals with hemophilia A and a documented history of factor VIII infusions before the introduction of viral inactivation procedures (1979-1984) were recruited from 36 hemophilia treatment centers (HTCs), and their genome-wide genetic variants were compared with those from matched HIV-infected individuals. Homozygous carriers of known CCR5 resistance mutations were excluded. Single nucleotide polymorphisms (SNPs) and inferred copy number variants (CNVs) were tested using logistic regression. In addition, we performed a pathway enrichment analysis, a heritability analysis, and a search for epistatic interactions with CCR5 Δ32 heterozygosity. A total of 560 HIV-uninfected cases were recruited: 36 (6.4%) were homozygous for CCR5 Δ32 or m303. After quality control and SNP imputation, we tested 1 081 435 SNPs and 3686 CNVs for association with HIV-1 serostatus in 431 cases and 765 HIV-infected controls. No SNP or CNV reached genome-wide significance. The additional analyses did not reveal any strong genetic effect. Highly exposed, yet uninfected hemophiliacs form an ideal study group to investigate host resistance factors. Using a genome-wide approach, we did not detect any significant associations between SNPs and HIV-1 susceptibility, indicating that common genetic variants of major effect are unlikely to explain the observed resistance phenotype in this population.
Original language | English |
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Pages (from-to) | 1903-1910 |
Number of pages | 8 |
Journal | Human Molecular Genetics |
Volume | 22 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- Adult
- DNA Copy Number Variations
- Disease Resistance
- Epistasis, Genetic
- Factor VIII
- Female
- Gene Deletion
- Genetic Predisposition to Disease
- Genome-Wide Association Study
- HIV Infections
- HIV Seropositivity
- Hemophilia A
- Heterozygote
- Homozygote
- Humans
- Logistic Models
- Male
- Meta-Analysis as Topic
- Middle Aged
- Phenotype
- Polymorphism, Single Nucleotide
- Prospective Studies
- Receptors, CCR5