Efficacy of enfuvirtide in patients infected with drug-resistant HIV-1 in Europe and Australia
2003
Background The T-20 vs. Optimized Regimen Only Study 2 (TORO 2) compared the efficacy and safety of 24 weeks of treatment with the fusion inhibitor enfuvirtide in combination with an optimized background antiretroviral regimen with the efficacy and safety of the optimized background regimen alone. Methods The patients had previous treatment with each of the three classes of antiretroviral drugs, documented resistance to each class, or both and a plasma level of human immunodeficiency virus type 1 (HIV-1) RNA of at least 5000 copies per milliliter. They were randomly assigned in a 2:1 ratio to receive either enfuvirtide (90 mg twice daily) plus a background regimen optimized with the aid of resistance testing (enfuvirtide group) or the background regimen alone (control group). Results Of the 512 patients who underwent randomization, 335 in the enfuvirtide group and 169 in the control group received at least one dose of study medication and had at least one follow-up measurement of plasma HIV-1 RNA. The med...
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