Both antiretroviral therapy and the human coreceptor polymorphism CCR2-V64I slow progression of human immunodeficiency virus type 1 (HIV-1) disease. To examine the effect of V64I on disease progression in patients receiving therapy, we determined CCR2 genotypes in the Women's Interagency HIV Study cohort. We studied 2047 HIV-1-infected women, most of whom initiated treatment during the study. No association was seen between CCR2 genotype and either disease progression or therapeutic response, suggesting that the benefits of treatment most likely overshadow the salutary effects of the V64I polymorphism.
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