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© Research
Publication : AIDS (London, England)

Long-term effects of intermittent interleukin-2 therapy in chronic HIV-infected patients (ANRS 048-079 Trials)

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in AIDS (London, England) - 12 Sep 2007

Durier C, Capitant C, Lascaux AS, Goujard C, Oksenhendler E, Poizot-Martin I, Viard JP, Weiss L, Netzer E, Delfraissy JF, Aboulker JP, Lévy Y

Link to Pubmed [PMID] – 17721096

AIDS 2007 Sep;21(14):1887-97

OBJECTIVE: Interleukin (IL)-2 therapy leads to significant CD4 cell increases in HIV-infected patients. Since phase III trials are ongoing, studies supporting the long-term feasibility of this strategy are needed.

METHODS: We studied the long-term outcomes of 131 patients treated with IL-2 in two studies initiated either before (ANRS 048) or following (ANRS 079) the advent of HAART.

RESULTS: At the last assessment (median follow-up 3.4 years), these patients experienced a gain of 428 cells/microl and a decrease in plasma HIV RNA to 1.70 log10 copies/ml. In both studies, high CD4 cell counts were maintained with a median of ten 5-day cycles of subcutaneous IL-2. Median time since the last cycle was 2 years. At last assessment, 59% of 048 patients maintained a non-HAART regimen. Detailed analysis at week 170 showed that median CD4 cell counts were 856 (048) and 964 (079) cells/microl. This corresponded to a gain from baseline of 515 (048) and 627 (079) cells/microl. The median viral load decreases from baseline and corresponded to 1.70 (048) and 1.88 (079) log10 copies/ml. Comparisons across the studies showed that CD4 gains and viral load changes were similar whether HAART or non-HAART was used. The frequency of cycling, but not CD4 cell counts, viral loads or antiviral regimen at baseline, was predictive of long-term CD4 gain (P = 0.03).

CONCLUSION: Altogether, these observations support IL-2 as a long-term therapeutic strategy in HIV infection.

http://www.ncbi.nlm.nih.gov/pubmed/17721096