A Phase IIIb Study Comparing Two Boosted Protease Inhibitor-based HAART Regimens in HIV-infected Patients Experiencing Their First Virologic Failure While Receiving an NNRTI-containing HAART Regimen

Inclusion Criteria

• •Patients ≥ 18 years of age infected with HIV
• •Plasma HIV RNA ≥ 1000 copies/mL and CD4 cell count ≥ 50 cells/mm3
• •Currently receiving a NNRTI-containing HAART regimen or not currently receiving a NNRTI-containing HAART regimen and have not been treated with an alternative regimen since the documented virologic failure (with genotype performed within 2 weeks of the discontinuation of the failing regimen and the genotype report is available)
• •The failing NNRTI-containing regimen must be the patient's first virologic failure on treatment and contain a NNRTI and at least 2 NRTIs. The regimen must have been administered for at least 24 weeks and the patient must have documented virologic response to the regimen (HIV RNA \< 400 c/mL)