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

This study has been completed.
Information provided by:
Bristol-Myers Squibb
ClinicalTrials.gov Identifier:
First received: August 25, 2005
Last updated: February 3, 2010
Last verified: July 2008

The purpose of this study is to compare the anti-HIV efficacy, safety and effect of serum lipids of two boosted protease inhibitor-based HAART regimens (ARV/RTV v. LPV/RTV) in HIV-1 infected subjects who have experienced their first virologic failure while receiving a NNRTI-containing HAART regimen.

Condition Intervention Phase
HIV Infections
Drug: Atazanavir+ritonavir
Drug: Lopinavir+ritonavir
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase IIIb, Open -Label, Randomized Multi-center Study Comparing the Antiviral Efficacy, Safety, and Effect on Serum Lipids of Atazanavir/Ritonavir Versus Lopinavir/Ritonavir, in Combination With Two Nucleoside or Nucleotide Reverse Transcriptase Inhibitors (NRTIs) in HIV-1 Infected Subjects Experiencing Their First Virologic Failure While Receiving a NNRTI-containing HAART Regimen.

Resource links provided by NLM:

Further study details as provided by Bristol-Myers Squibb:

Primary Outcome Measures:
  • Co-Primary Outcomes in this study 1)Viral load reduction from baseline through Week 24 2)Change in lipids from baseline at Week 12

Secondary Outcome Measures:
  • Viral load reduction from baseline at Weeks 48,72,96;Subjects with HIV RNA<50 and <400 c/mL at Weeks 24,48,72 & 96;Patterns of resistance;Safety and tolerability through Week 96 including fasting lipid values;Adherence at Weeks 4,12,24,48,72 & 96.

Estimated Enrollment: 200
Study Start Date: May 2004
Study Completion Date: February 2006
Primary Completion Date: February 2006 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: A Drug: Atazanavir+ritonavir
Capsules, Oral, 300mg/100mg, once daily, 24 weeks.
Other Name: Reyataz
Active Comparator: B Drug: Lopinavir+ritonavir
Capsules, Oral, 800mg/200mg, twice daily, 24 weeks.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

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)

Exclusion Criteria:

  • Pregnancy or breastfeeding
  • Reported virologic failure to two or more antiretroviral regimens
  • Active AIDS-defined opportunistic infection or disease
  • Proven or suspected acute hepatitis within 30 days prior to study entry
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00135395

  Show 53 Study Locations
Sponsors and Collaborators
Bristol-Myers Squibb
Study Director: Bristol-Myers Squibb Bristol-Myers Squibb
  More Information

Additional Information:
No publications provided

ClinicalTrials.gov Identifier: NCT00135395     History of Changes
Other Study ID Numbers: AI424-103
Study First Received: August 25, 2005
Last Updated: February 3, 2010
Health Authority: United States: Food and Drug Administration

Keywords provided by Bristol-Myers Squibb:
Treatment Experienced

Additional relevant MeSH terms:
Anti-HIV Agents
Anti-Infective Agents
Anti-Retroviral Agents
Antiviral Agents
Enzyme Inhibitors
HIV Protease Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Protease Inhibitors
Therapeutic Uses

ClinicalTrials.gov processed this record on March 26, 2015