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A Study of Three Different Anti-HIV Drug Combinations in HIV-Infected Patients

This study has been completed.
Information provided by:
NIH AIDS Clinical Trials Information Service Identifier:
First received: November 2, 1999
Last updated: June 23, 2005
Last verified: November 1998
The purpose of this study is to compare the safety and effectiveness of three anti-HIV drug combinations. The three combinations are: (1) efavirenz (DMP 266) plus indinavir; (2) DMP 266 plus zidovudine (ZDV) plus lamivudine (3TC); and (3) indinavir plus ZDV plus 3TC. This study also examines the resistance HIV may have to these drugs and if these drugs are effective over a long period of time.

Condition Intervention Phase
HIV Infections Drug: Indinavir sulfate Drug: Lamivudine Drug: Zidovudine Phase 3

Study Type: Interventional
Study Design: Primary Purpose: Treatment
Official Title: A Phase III, Multicenter, Randomized, Open-Label Study to Compare Antiretroviral Activity and Tolerability of Three Different Combination Regimens (DMP 266 + Indinavir, DMP 266 + Zidovudine + Lamivudine, Indinavir + Zidovudine + Lamivudine) in HIV-Infected Patients

Resource links provided by NLM:

Further study details as provided by NIH AIDS Clinical Trials Information Service:


Ages Eligible for Study:   13 Years to 60 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Exclusion Criteria

Concurrent Medication:


  • Terfenadine, astemizole, cisapride, triazolam, or midazolam (competition for the enzyme cytochrome P-450 3A4 [CYP3A4] by indinavir could result in inhibition of metabolic breakdown of these drugs and create the potential for serious and/or life threatening events [i.e., cardiac arrhythmia, prolonged sedation]).
  • Rifampin or rifabutin (prohibited because of potential drug interaction with indinavir).
  • Ketoconazole, itraconazole, and clarithromycin.
  • Concomitant systemic therapy for acute opportunistic infection or malignancy.


Life expectancy less than 12 months.

Prior Medication:


  • Prior treatment with efavirenz, 3TC, an NNRTI, or an HIV protease inhibitor.
  • Prior antiretroviral agent within 14 days of initiating study treatment.
  • Prior treatment (within 30 days of initiating study treatment) with any other experimental drug for any indication.

Patients must:

  • Have a diagnosis of HIV infection.
  • Have CD4 counts greater than or equal to 50 cell/mm3.
  • Have a life expectancy greater than or equal to 12 months.
  • Be post-pubescent.
  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 identifier: NCT00002410

  Show 41 Study Locations
Sponsors and Collaborators
Dupont Merck
  More Information Identifier: NCT00002410     History of Changes
Other Study ID Numbers: 281B
DMP 266-006
Study First Received: November 2, 1999
Last Updated: June 23, 2005

Keywords provided by NIH AIDS Clinical Trials Information Service:
Drug Therapy, Combination
Drug Resistance, Microbial
HIV Protease Inhibitors
Reverse Transcriptase Inhibitors

Additional relevant MeSH terms:
HIV Infections
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Anti-HIV Agents
HIV Protease Inhibitors
Protease Inhibitors processed this record on September 20, 2017