Safety and Effectiveness of Giving Adefovir (Preveon) Plus Other Anti-HIV Drugs to HIV-Infected Patients Who Have Not Responded to Other Anti-HIV Drug Combinations

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: NCT00002398
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 see if it is safe and effective to give adefovir plus other anti-HIV drugs to HIV-infected patients who have failed other anti-HIV drug combinations. This study will try to make adefovir available to all AIDS patients who need it.

Some patients do not respond to anti-HIV drug combinations, even when different combinations are tried. Adefovir may be able to help these patients fight HIV.

Condition or disease Intervention/treatment Phase
HIV Infections Drug: Levocarnitine Drug: Adefovir dipivoxil Not Applicable

Detailed Description:

Recent studies indicate that the use of triple-combination therapy, in particular the combinations of reverse transcriptase inhibitors and a protease inhibitor, can result in a significant decrease in plasma HIV-1 RNA levels and an increase in CD4 cell count. Continued follow-up of patients taking triple-combination drug regimens has in some cases demonstrated sustained suppression of plasma HIV-1 RNA levels for up to 18 months. Furthermore, despite the potent antiviral effect of some triple combinations, a percentage of patients continue to have measurable levels (more than 500 copies/ml) of HIV-1 RNA in plasma, even when treated with a combination of 2 reverse transcriptase inhibitors and indinavir. Over time, some patients experience a rebound of plasma HIV-1 RNA for reasons that are not well understood. [AS PER AMENDMENT 7/8/98: Randomization to 2 dose levels may allow more patients to derive therapeutic benefit from Preveon by minimizing adverse effects.]

Patients not previously enrolled in clinical trials of Preveon are randomized to 1 of 2 doses of Preveon orally once daily and L-carnitine orally once daily. [AS PER AMENDMENT 7/8/98: Patients must receive other antiretroviral agents concomitantly with Preveon; at least 1 other antiretroviral agent must be added with Preveon that was not previously administered to the patient.Patients previously enrolled in Preveon clinical trials who "roll in" to expanded access and who have received at least 16 weeks of Preveon receive open-label Preveon orally once daily and L-carnitine orally once daily, taken with or without food at the same time each day.] All patients enrolled in expanded access are randomized in a 1:1 fashion to 1 of 2 doses taken orally once daily. Patients initially assigned to the higher dose will have their Preveon dose reduced to the lower dose at Week 16 of treatment. Patients initially assigned to the lower dose continue this dose unless dose modification to an even lower dose for toxicity is required. [AS PER AMENDMENT 7/8/98: Additional informed consent is needed for this reduction due to limited efficacy of the lower dosage in treating HIV infection.]

Study Type : Interventional  (Clinical Trial)
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Open-Label Expanded Access Program to Evaluate the Safety of Preveon (Adefovir Dipivoxil) at Two Dose Levels When Used in Combination With Other Antiretroviral Agents for the Treatment of Patients With HIV Infection Who Have Failed Other Antiretroviral Therapy and Have Limited Treatment Options

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

Inclusion Criteria

You may be eligible for this study if you:

  • Are HIV-positive.
  • Have a CD4 cell count of 50 cells/mm3 or less within the past 2 months.
  • Have a viral load (level of HIV in the body) of 30,000 copies/ml or more within the past 2 months.
  • Are at least 13 years old (need consent of parent or guardian if under 18).
  • Have failed to respond to an anti-HIV drug combination that included at least 2 nucleoside reverse transcriptase inhibitors and at least 1 protease inhibitor (PI).
  • Do not have any other anti-HIV treatment options left.
  • Agree to use effective methods of birth control during the study.

Exclusion Criteria

You will not be eligible for this study if you:

  • Have certain serious medical conditions that would prevent you from completing the study, including serious kidney disorders.
  • Have taken certain medications, including certain treatments for opportunistic (HIV-related) diseases.
  • Are pregnant or breast-feeding.

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): NCT00002398

United States, California
Gilead Sciences Inc
Foster City, California, United States, 94404
Sponsors and Collaborators
Gilead Sciences Identifier: NCT00002398     History of Changes
Other Study ID Numbers: 232G
First Posted: August 31, 2001    Key Record Dates
Last Update Posted: June 24, 2005
Last Verified: December 1999

Keywords provided by NIH AIDS Clinical Trials Information Service:
Acquired Immunodeficiency Syndrome
Anti-HIV Agents

Additional relevant MeSH terms:
HIV Infections
Acquired Immunodeficiency Syndrome
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Slow Virus Diseases
Adefovir dipivoxil
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action