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2013-07-30Zeitschriftenartikel DOI: 10.1371/journal.pone.0071174
Virologic and Immunologic Response to cART by HIV-1 Subtype in the CASCADE Collaboration
Touloumi, Giota
Pantazis, Nikos
Chaix, Marie-Laure
Bucher, Heiner C.
Zangerle, Robert
Kran, Anne-Marte Bakken
Thiebaut, Rodolphe
Masquelier, Bernard
Kücherer, Claudia
Monforte, Antonella d'Arminio
Meyer, Laurence
Porter, Kholoud
Background: We aimed to compare rates of virologic response and CD4 changes after combination antiretroviral (cART) initiation in individuals infected with B and specific non-B HIV subtypes. Methods: Using CASCADE data we analyzed HIV-RNA and CD4 counts for persons infected ≥1996, ≥15 years of age. We used survival and longitudinal modeling to estimate probabilities of virologic response (confirmed HIV-RNA 500 c/ml at 6 months or ≥1000 c/ml following response) and CD4 increase after cART initiation. Results: 2003 (1706 B, 142 CRF02_AG, 55 A, 53 C, 47 CRF01_AE) seroconverters were included in analysis. There was no evidence of subtype effect overall for response or failure (p = 0.075 and 0.317, respectively) although there was a suggestion that those infected with subtypes CRF01_AE and A responded sooner than those with subtype B infection [HR (95% CI):1.37 (1.01–1.86) and 1.29 (0.96–1.72), respectively]. Rates of CD4 increase were similar in all subtypes except subtype A, which tended to have lower initial, but faster long-term, increases. Conclusions: Virologic and immunologic response to cART was similar across all studied subtypes but statistical power was limited by the rarity of some non-B subtypes. Current antiretroviral agents seem to have similar efficacy in subtype B and most widely encountered non-B infections in high-income countries.
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DOI
10.1371/journal.pone.0071174
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https://doi.org/10.1371/journal.pone.0071174
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<a href="https://doi.org/10.1371/journal.pone.0071174">https://doi.org/10.1371/journal.pone.0071174</a>