PMID: 16518959Mar 8, 2006Paper

Increased antiretroviral potency by the addition of enfuvirtide to a four-drug regimen in antiretroviral-naive, HIV-infected patients

Antiviral Therapy
José MoltóBonaventura Clotet

Abstract

To assess if enfuvirtide (ENF) increases antiviral activity of a highly active four-drug antiretroviral (ARV) regimen containing lopinavir/ritonavir, efavirenz, lamivudine and tenofovir in ARV-naive, HIV-infected patients. Pilot study in ARV-naive, HIV-infected patients with viral load (VL) >10,000 copies/ml and no documented resistance to any of the study drugs. Patients were randomized to receive ENF (ENF Group) or not (Control Group) in combination with lopinavir/ritonavir, efavirenz, lamivudine and tenofovir as a backbone. The primary endpoint was to assess differences in the HIV-1 RNA decay rate during the first phase of viral decay. VL and treatment adherence were measured at baseline, every 6 h during the first 3 days, and once daily from day 3 to 6. Individual HIV-1 RNA decay rates were obtained using a non-linear least squares regression model. Eight subjects were included in each study group. Mean (SD) baseline VL was 4.98 (0.38) log10 copies/ml in the ENF Group and 5.10 (0.49) log10 copies/ml in the Control Group (P=0.607). Baseline CD4+ cell count was 463 (306) and 362 (225) cells/mm3 in the ENF and the Control Group, respectively (P=0.484). First phase HIV-1 RNA decay rate was 0.802 (0.127) d(-1) in the ENF Group a...Continue Reading

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