Abstract
Genetic variation in CC chemokine receptor 5 (CCR5), the major HIV-1 coreceptor, has been shown to influence HIV-1 transmission and disease progression. However, it is generally assumed that the same CCR5 genotype (or haplotype) has similar phenotypic effects in different populations. To test this assumption, we used an evolutionary-based classification of CCR5 haplotypes to determine their associated HIV-1 disease-modifying effects in a large well-characterized racially mixed cohort of HIV-1-seropositive individuals. We demonstrate that the spectrum of CCR5 haplotypes associated with disease acceleration or retardation differs between African Americans and Caucasians. Also, we show that there is a strong interactive effect between CCR5 haplotypes with different evolutionary histories. The striking population-specific phenotypic effects associated with CCR5 haplotypes emphasize the importance of understanding the evolutionary context in which disease susceptibility genes are expressed.
MeSH Terms
Acquired Immunodeficiency Syndrome/genetics,metabolism
Adolescent
Adult
Africa
Aged
Alleles
Asia
Biological Evolution
Blacks/genetics
Cohort Studies
Disease Progression
Female
Genetic Variation
Genotype
HIV Seropositivity/epidemiology,genetics
HIV-1
Haplotypes
Humans
Male
Middle Aged
Phylogeny
Polymorphism, Restriction Fragment Length
Racial Groups/genetics
Receptors, CCR5/genetics
Time Factors
United States
Whites/genetics
Chemicals
Receptors, CCR5
Authors & Affiliations
22 authors, click to expand affiliations / ORCID
Gonzalez E
Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA.
Bamshad M
Sato N
Mummidi S
Dhanda R
Catano G
Cabrera S
McBride M
Cao X H
Merrill G
O'Connell P
Bowden D W
Freedman B I
Anderson S A
Walter E A
Evans J S
Stephan K T
Clark R A
Tyagi S
Ahuja S S
Dolan M J
Ahuja S K
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