Ssemwanga, Deogratius; Nsubuga, Rebecca N; Mayanja, Billy N; Lyagoba, Frederick; Magambo, Brian; Yirrell, Dave; Van der Paal, Lieve; Grosskurth, Heiner; Kaleebu, Pontiano; (2013) Effect of HIV-1 subtypes on disease progression in rural Uganda: a prospective clinical cohort study. PloS one, 8 (8). e71768-. ISSN 1932-6203 DOI: https://doi.org/10.1371/journal.pone.0071768
Permanent Identifier
Use this Digital Object Identifier when citing or linking to this resource.
Abstract
OBJECTIVE: We examined the association of HIV-1 subtypes with disease progression based on three viral gene regions. DESIGN: A prospective HIV-1 clinical cohort study in rural Uganda. METHODS: Partial gag, env and pol genes were sequenced. Cox proportional hazard regression modelling was used to estimate adjusted hazard ratios (aHRs) of progression to: CD4≤250, AIDS onset and death, adjusted for sex, age and CD4 count at enrolment. RESULTS: Between 1990 and 2010, 292 incident cases were subtyped: 25% had subtype A, 45% had D, 26% had A/D recombinants, 1% had C and 4% were other recombinant forms. Of the 278 incident cases included in the disease progression analysis, 62% progressed to CD4≤250, 32% to AIDS, and 34% died with a higher proportion being among subtype D cases. The proportions of individuals progressing to the three endpoints were significantly higher among individuals infected with subtype D. Throughout the study period, individuals infected with subtype D progressed faster to CD4≤250, adjusted HR (aHR), (95% CI) = 1.72 (1.16-2.54), but this was mainly due to events in the period before antiretroviral therapy (ART) introduction, when individuals infected with subtype D significantly progressed faster to CD4≤250 than subtype A cases; aHR (95% CI) = 1.78 (1.01-3.14). CONCLUSIONS: In this population, HIV-1 subtype D was the most prevalent and was associated with faster HIV-1 disease progression than subtype A. Further studies are needed to examine the effect of HIV-1 subtypes on disease progression in the ART period and their effect on the virological and immunological ART outcomes.
Item Type | Article |
---|---|
Faculty and Department |
Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology & International Health (2023-) MRC Uganda > UG-HIV Care |
Research Centre | Tropical Epidemiology Group |
PubMed ID | 23951241 |
ISI | 323097300155 |
Related URLs |
Download
Filename: Effect of HIV-1 Subtypes on Disease Progression in Rural Uganda_GOLD VoR.PDF
Licence: Creative Commons: Attribution 3.0
Download