A Study of Saquinavir/Ritonavir in Liver-Impaired Patients With HIV Infection.

Effect of Moderate Liver Impairment on the Pharmacokinetics of Saquinavir After Administration of Saquinavir/Ritonavir 1000/100mg BID in HIV Patients

This 2 arm study will assess the effect of moderate liver impairment on the pharmacokinetics of saquinavir and ritonavir at steady state following administration of saquinavir/ritonavir 1000mg/100mg po bid in HIV patients. Saquinavir/ritonavir will be administered concomitantly with 2 to 3 active nucleoside reverse transcriptase inhibitors. The study will compare a group of HIV patients without known liver disease and a group with moderate liver disease. The anticipated time on study treatment is <3 months, and the target sample size is <100 individuals.

Inclusion Criteria:

• adult patients, 18-65 years of age;
• HIV infection;
• normal liver function, or moderate liver disease (Child-Pugh grade B);
• antiretroviral therapy naive and eligible to take antiretroviral treatment as per treatment guidelines, or treatment experienced for at least 4 weeks prior to first dosing.

Exclusion Criteria:

• severe ascites at screening, or Child-Pugh grade C;
• acute infection or current malignancy requiring treatment;
• taking any inhibitor of CYP3A4 (with the exception of anti-HIV drugs) within 14 days prior to first dosing;
• taking any inducer of CYP3A4 (with the exception of anti-HIV drugs) within 4 weeks prior to pharmacokinetic evaluation (day 14 or 28);
• evidence of resistance to saquinavir.