Safety and Effectiveness of Lamivudine When Given Once a Day Versus Twice a Day in Combination With Other Anti-HIV Drugs in HIV-Infected Adults Who Have Never Received Anti-HIV Drugs

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00004852
Recruitment Status : Completed
First Posted : August 31, 2001
Last Update Posted : June 24, 2005
Information provided by:
NIH AIDS Clinical Trials Information Service

Brief Summary:
The purpose of this study is to look at the safety and effectiveness of receiving lamivudine (3TC) once a day versus twice a day as part of an anti-HIV drug combination.

Condition or disease Intervention/treatment Phase
HIV Infections Drug: Efavirenz Drug: Lamivudine Drug: Zidovudine Phase 2

Detailed Description:
Patients are randomized to receive the same total dosage of 3TC either twice a day (Group 1) or once a day (Group 2) in combination with ZDV and EFV over 48 weeks. Viral load measurements will be performed at Weeks 4, 8, 12, 16, 20, 24, and every 8 weeks thereafter.

Study Type : Interventional  (Clinical Trial)
Masking: Double
Primary Purpose: Treatment
Official Title: A Phase II/III 48-Week, Randomized, Double-Blind, Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Lamivudine 300mg Once Daily Vs. Lamivudine 150mg BID in Combination With Zidovudine 300mg BID and Efavirenz 600mg Once Daily in Antiretroviral-Naive Adults With HIV-1 Infection
Study Start Date : September 1999

Resource links provided by the National Library of Medicine

MedlinePlus related topics: HIV/AIDS

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria

Patients may be eligible for this study if they:

  • Are 18 years of age or older.
  • Are HIV-positive.
  • Have a viral load (level of HIV in the blood) of at least 400 copies/ml within 21 days of study entry.
  • Have a CD4 count greater than 100 cells/mm3 within 21 days of study entry.
  • Agree to practice abstinence or use effective barrier methods of birth control (or, if patient is a woman, unable to have children).

Exclusion Criteria

Patients will not be eligible for this study if they:

  • Have taken any antiretroviral (anti-HIV) agent.
  • Are pregnant or breast-feeding.
  • Are unable to absorb food or have trouble taking medicines by mouth.
  • Abuse alcohol or drugs to an extent that may make study participation difficult.
  • Are not likely to be able to complete the 48 weeks of study treatment.
  • Have a history of pancreatitis (inflamed pancreas) or hepatitis within the last 6 months or any evidence of liver disease.
  • Have received an investigational vaccine within the past 3 months or have received gene therapy.
  • Have a severe medical condition such as diabetes or heart trouble.
  • Have been diagnosed with AIDS.
  • Have had radiation therapy or chemotherapy within 30 days of study entry, except for treatment of Kaposi's sarcoma.
  • Are taking medications that affect the immune system within 30 days of study entry.
  • Are taking medications that may interact with the study drugs.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00004852

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Sponsors and Collaborators
Glaxo Wellcome Identifier: NCT00004852     History of Changes
Other Study ID Numbers: 225D
EPV2000 1
First Posted: August 31, 2001    Key Record Dates
Last Update Posted: June 24, 2005
Last Verified: August 2000

Keywords provided by NIH AIDS Clinical Trials Information Service:
Drug Therapy, Combination
Drug Administration Schedule
Reverse Transcriptase Inhibitors
Anti-HIV Agents
Viral Load

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
Cytochrome P-450 CYP2C9 Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Cytochrome P-450 CYP2C19 Inhibitors
Cytochrome P-450 CYP2B6 Inducers
Cytochrome P-450 Enzyme Inducers
Cytochrome P-450 CYP3A Inducers