Pharmacokinetic characterization of three doses of tipranavir boosted with ritonavir on highly active antiretroviral therapy in treatment-experienced HIV-1 patients.
2010
AbstractPurpose: This study characterized the pharmacokinetic effects, safety, and antiretroviral activity of three different doses of the nonpeptidic protease inhibitor tipranavir, in combination with ritonavir administered twice daily for 28 days, on a number of triple-combination regimens containing a nonnucleoside reverse transcriptase inhibitor (efavirenz or nevirapine) plus two nucleoside reverse transcriptase inhibitors (abacavir, didanosine, lamivudine, stavudine, and zidovudine) or a three nucleoside reverse transcriptase inhibitor combination (zidovudine, lamivudine, and abacavir).Methods: The study enrolled 208 HIV-1–positive patients who had been on stable antiretroviral treatment for at least 12 weeks prior to study entry and had an HIV-1 RNA load of δ 20,000 copies/mL. The patients were randomized to receive one of three dose combinations of tipranavir and ritonavir (1250/100 mg, 750/100 mg, and 250/200 mg) in addition to their antiretroviral (ARV) regimen for the next 22 days. The effects o...
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