Shorter Survival ofSDF1‐3′A/3′AHomozygotes Linked to CD4+T Cell Decrease in Advanced Human Immunodeficiency Virus Type 1 Infection

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Abstract
The SDF-1 3′A allelic polymorphism has been reported to influence either positively or negatively the progression of human immunodeficiency virus type 1 (HIV-1) disease. Therefore, the SDF-1 genotype of 729 HIV-1-infected individuals pooled from 3 distinct cohorts was determined. A statistically nonsignificant association between the SDF1-3′A/3′A genotype and accelerated disease progression was evident among seroconverters (n = 319), but a striking correlation of decreased survival after either diagnosis of AIDS according to the 1993 definition or loss of CD4+ T cell counts SDF1-3′A/3′A homozygotes, compared with heterozygotes and wild-type homozygotes were 2.16 (P = .0047), for time from diagnosis according to the 1993 Centers for Disease Control and Prevention AIDS case definition (AIDS-'93) to death, and 3.43 (P = .0001), for time from CD4+ T cells SDF1-3′A/3′A genotype with the accelerated progression of late-stage HIV-1 disease appears to be explained for the most part by the loss of CD4+ T lymphocytes.

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