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A 96 Week Study Comparing the Antiviral Efficacy and Safety of Atazanavir/ritonavir with Lopinavir/ritonavir, Each in Combination with Fixed Dose Tenofovir-Emtricitabine in HIV-1 Infected Treatment Naive Subjects. Revised Protocol 04 Incorporating changes from Amendment 03, 04, 05, 06 (Version 1.0, Date 03-Apr-2007), and Administrative Letter dated 31-Oct-2006. Pharmacogenetics Blood Sample Amendment 01, version 1.0, dated 21-Sep-05; and Metabolic Pharmacogenetics Substudy Amendment 02, version 1.0, dated 21-Sep-05

A 96 Week Study Comparing the Antiviral Efficacy and Safety of Atazanavir/ritonavir with Lopinavir/ritonavir, Each in Combination with Fixed Dose Tenofovir-Emtricitabine in HIV-1 Infected Treatment Naive Subjects. Revised Protocol 04 Incorporating changes from Amendment 03, 04, 05, 06 (Version 1.0, Date 03-Apr-2007), and Administrative Letter dated 31-Oct-2006. Pharmacogenetics Blood Sample Amendment 01, version 1.0, dated 21-Sep-05; and Metabolic Pharmacogenetics Substudy Amendment 02, version 1.0, dated 21-Sep-05

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2005-001895-11-GB
Enrollment
1200
Registered
2005-11-25
Start date
2006-02-07
Completion date
Unknown
Last updated
2019-11-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HIV-1 Infected Treatment Naive Subjects

Interventions

Sponsors

Bristol-Myers Squibb International Corporation
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Provide written informed consent and assess whether the subject is capable of reading and comprehending the informed consent; 2) Qualifying plasma HIV RNA = 5000 c/mL obtained at screening; 3) Men and women, ages 18 years and older (or minimum age as determined by local regulatory or as legal requirements dictate). 4) Women of childbearing potential (WOCBP) must be using an adequate method of contraception to avoid pregnancy throughout the study and for up to 8 weeks after the study in such a manner that the risk of pregnancy is minimized. Both females and males must utilize effective barrier contraception. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1) WOCBP who are unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period and for up to 8 weeks after the study; 2) WOCBP using a prohibited contraceptive method (see Protocol Appendix 8); 3) Women who are pregnant or breastfeeding; 4) Women with a positive pregnancy test on enrollment or prior to study drug administration; 5) Presence of a newly diagnosed HIV-related opportunistic infection or any medical condition requiring acute therapy at the time of enrollment; 6) Suspected primary (acute) HIV infection; 7) Any antiretroviral therapy within 30 days prior to screening 8) Prior antiretroviral therapy = 1 week. However in specific settings of antiretroviral treatment including a/ post exposure prophylaxis (PEP) b/ pre-exposure prophylaxis (PREP) and/or c/ HAART exposure for reduction of risk of mother-to-child transmission, the following prior antiretroviral exposure exceptions will apply, allowing the subject entry into the study: •< 6 weeks of triple antiretroviral therapy (3 drugs of any class) or •< 4 weeks of dual antiretroviral therapy (2 drugs of any class) or •<1 week of mono-antiretroviral therapy (1 drug of any class) 9) Subjects with Cushing’s syndrome; 10) Untreated hypothyroidism or hyperthyroidism; 11) Recent therapy with agents with significant systemic myelosuppressive, neurotoxic, pancreatotoxic, hepatotoxic or cytotoxic potential within 3 months of study start or the expected need for such therapy at the time of enrollment; or therapy with methadone or ribavirin/interferons or treatment with neurotoxic drugs or drugs that affect CYP3A4 (see Protocol Section 6.4 and Appendix 8); 12) Subjects with obstructive liver disease; 13) Active alcohol or substance use sufficient, in the investigator’s opinion, to prevent adequate compliance with study therapy or to increase the risk of developing pancreatitis or chemical hepatitis; 14) Proven or suspected acute hepatitis in the 30 days prior to study entry; Note: Chronic co-infection with hepatitis C and/or B are not exclusion criteria. Subjects with acute hepatitis infection may have the option to be screened after the event has evolved into a chronic infection. HBV co-infected subjects participating in this trial; and interrupting study therapy are at an increased risk of developing elevations in hepatic transaminases due to prior reports of exacerbations of hepatitis in patients after the discontinuation of TDF/FTC.15 Subjects with HBV co-infection are required to have an additional 6 months of follow-up after stopping study medications. 15) Intractable diarrhea (= 6 loose stools/day for at least 7 consecutive days) within 30 days prior to study entry; 16) Inability to swallow capsules; 17) Active peripheral neuropathy; 18) Presence of cardiomyopathy or any significant cardiovascular disease; 19) Known, clinically significant cardiac conduction system dis

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of the study is to compare the proportion of subjects with HIV RNA < 50 c/mL at Week 48 between the ATV/RTV/TDF/FTC and LPV/RTV/TDF/FTC treatment regimens. ; Secondary Objective: To assess: -proportion of subjects with HIV RNA<400 c/mL at Week 48 -proportions of subjects with HIV RNA<50 c/mL and <400 c/mL at Week 96 -time to loss of virologic response -reduction of log10 HIV RNA from baseline through Weeks 48 and 96 -change in CD4 cell count from baseline through Weeks 48 and 96 -safety and tolerability of the regimens -changes from baseline in fasting lipids over time and proportion of subjects with NCEP-guided categories of fasting lipids over time -changes from baseline in fasting glucose and insulin -antiretroviral resistance profiles of subjects experiencing virologic failure -trough concentrations of ATV, LPV, and RTV and to explore correlations with efficacy and safety parameters To evaluate: -quality of life (as by MOS-HIV) -impact of gastro-intestinal toxicity on the quality of life (as by IBS-QOL questionnaire) -adherence to each drug and to the regimen (as by MACS adherence questionnaire) ;Primary end point(s): Proportion of subjects with HIV RNA < 50 c/mL at Week 48.

Countries

Austria, Belgium, Denmark, Germany, Italy, Portugal, Spain, United Kingdom

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026