TY - JOUR
T1 - Predictors of CD4(+) T-Cell Counts of HIV Type 1–Infected Persons After Virologic Failure of All 3 Original Antiretroviral Drug Classes
AU - Costagliola, Dominique
AU - Ledergerber, Bruno
AU - Torti, Carlo
AU - van Sighem, Ard
AU - Podzamczer, Daniel
AU - Mocroft, Amanda
AU - Dorrucci, Maria
AU - Masquelier, Bernard
AU - de Luca, Andrea
AU - Jansen, Klaus
AU - De Wit, Stephane
AU - Obel, Niels
AU - F�tkenheuer, Gerd
AU - Touloumi, Giota
AU - Mussini, Cristina
AU - Castagna, Antonella
AU - Stephan, Cristoph
AU - Garc�a, Federico
AU - Zangerle, Robert
AU - Duval, Xavier
AU - Perez-Hoyos, Santiago
AU - Meyer, Laurence
AU - Ghosn, Jade
AU - Fabre-Colin, C�line
AU - Kjaer, Jesper
AU - Ch�ne, Genevieve
AU - Grarup, Jesper
AU - Phillips, Andrew
AU - Lodwick, Rebecca
AU - Torti, Carlo
AU - Dorrucci, Maria
AU - G�nthard, Huldrych F
AU - Michalik, Claudia
AU - Chrysos, George
AU - Castagna, Antonella
AU - (COHERE), Pursuing Later Treatment Option II (PLATO II) Project Team of the Collaboration of Observational HIV Epidemiological Research Europe
PY - 2013/3/1
Y1 - 2013/3/1
N2 - Background. Low CD4+ T-cell counts are the main factor leading to clinical progression in human immunodeficiency virus type 1 (HIV-1) infection. We aimed to investigate factors affecting CD4+ T-cell counts after triple-class virological failure.Methods. We included individuals from the COHERE database who started antiretroviral therapy from 1998 onward and who experienced triple-class virological failure. CD4+ T-cell counts obtained after triple-class virologic failure were analyzed using generalized estimating equations.Results. The analyses included 2424 individuals with a total of 23 922 CD4+ T-cell count measurements. In adjusted models (excluding current viral load and year), CD4+ T-cell counts were higher with regimens that included boosted protease inhibitors (increase, 22 cells/μL [95% confidence interval {CI}, 3.9-41]; P =. 017) or drugs from the new classes (increase, 39 cells/μL [95% CI, 15-62]; P =. 001), compared with nonnucleoside reverse-transcriptase inhibitor-based regimens. These associations disappeared when current viral load and/or calendar year were included. Compared with viral levels of <2.5 log10 copies/mL, levels of 2.5-3.5, 3.5-4.5, 4.5-5.5, and >5.5 log10 copies/mL were associated with CD4+ T-cell count decreases of 51, 84, 137, and 186 cells/μL, respectively (P <. 001).Conclusions. The approximately linear inverse relationship between log10 viral load and CD4+ T-cell count indicates that there are likely immunologic benefits from lowering viral load even by modest amounts that do not lead to undetectable viral loads. This is important for patients with low CD4+ T-cell counts and few drug options.
AB - Background. Low CD4+ T-cell counts are the main factor leading to clinical progression in human immunodeficiency virus type 1 (HIV-1) infection. We aimed to investigate factors affecting CD4+ T-cell counts after triple-class virological failure.Methods. We included individuals from the COHERE database who started antiretroviral therapy from 1998 onward and who experienced triple-class virological failure. CD4+ T-cell counts obtained after triple-class virologic failure were analyzed using generalized estimating equations.Results. The analyses included 2424 individuals with a total of 23 922 CD4+ T-cell count measurements. In adjusted models (excluding current viral load and year), CD4+ T-cell counts were higher with regimens that included boosted protease inhibitors (increase, 22 cells/μL [95% confidence interval {CI}, 3.9-41]; P =. 017) or drugs from the new classes (increase, 39 cells/μL [95% CI, 15-62]; P =. 001), compared with nonnucleoside reverse-transcriptase inhibitor-based regimens. These associations disappeared when current viral load and/or calendar year were included. Compared with viral levels of <2.5 log10 copies/mL, levels of 2.5-3.5, 3.5-4.5, 4.5-5.5, and >5.5 log10 copies/mL were associated with CD4+ T-cell count decreases of 51, 84, 137, and 186 cells/μL, respectively (P <. 001).Conclusions. The approximately linear inverse relationship between log10 viral load and CD4+ T-cell count indicates that there are likely immunologic benefits from lowering viral load even by modest amounts that do not lead to undetectable viral loads. This is important for patients with low CD4+ T-cell counts and few drug options.
U2 - 10.1093/infdis/jis752
DO - 10.1093/infdis/jis752
M3 - Journal article
C2 - 23225900
SN - 0022-1899
VL - 207
SP - 759
EP - 767
JO - Journal of Infectious Diseases
JF - Journal of Infectious Diseases
IS - 5
ER -