Effectiveness of Early or Delayed Addition of Hydroxyurea to a Three-Drug Anti-HIV Drug Combination Including Didanosine, in Advanced HIV Patients Who Failed a First or Second Anti-HIV Triple-Drug Therapy

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: NCT00008866
Recruitment Status : Withdrawn
First Posted : August 31, 2001
Last Update Posted : May 18, 2012
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary:

The purpose of this study is to find out whether or not the addition of hydroxyurea to didanosine (ddI) and other anti-HIV medications will result in better control of HIV infection.

The Food and Drug Administration (FDA) has approved ddI for treating HIV infections. Hydroxyurea is approved for treating some cancers and blood disorders. It works against HIV-1 when combined with ddI. Researchers need to look at how well patients may respond to hydroxyurea in combination with ddI and other anti-HIV drugs, and at any side effects.

Condition or disease Intervention/treatment Phase
HIV Infections Biological: Tetanus Toxoid Vaccine Drug: Hydroxyurea Drug: Didanosine Phase 2

Detailed Description:

Increasing frequency of treatment failures on potent antiretroviral therapy has accelerated the need for new classes of agents. Hydroxyurea, an agent broadly used for its antineoplastic properties, has been shown to inhibit HIV-1 in vitro and in vivo when combined with the nucleoside analogue reverse transcriptase inhibitor didanosine (ddI). There is an urgent need to prospectively test the safety, tolerability, and efficacy of hydroxyurea in late-stage, treatment-experienced patients.

Patients undergo genotypic analysis after registration to Step 1. Genotypic antiretroviral resistance test (GART) along with a patient's antiretroviral drug history will be used to select an optimal antiretroviral drug regimen (non-study drugs) for each patient. Patients willing to initiate the GART-based regimen are randomized at Week 5 into Step 2. They are stratified, first by level of ddI resistance, then within each strata by CD4+ T cell count, and then assigned to 1 of 3 treatment arms to start all study drugs (ddI and hydroxyurea) and non-study antiretroviral drugs on the day of randomization. Patients in Arm A receive ddI and hydroxyurea placebo; Arm B, ddI and hydroxyurea placebo that is replaced by hydroxyurea after 8 weeks; and Arm C, ddI and hydroxyurea. Patients receive treatment for 48 weeks. Patients are checked regularly for immunologic, virologic, and metabolic parameters. Patients may elect to participate in substudy A5070s, which explores the effects of study treatment on T cell populations and other immunologic evaluations.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 0 participants
Masking: Double
Primary Purpose: Treatment
Official Title: A Phase II, Double-Blind, Randomized Study to Determine the Effect of Adding Delayed Versus Immediate Hydroxyurea to a Genotypic Based, ddI-Containing, Three-Drug Antiretroviral Regimen on the Recovery of Total CD4+ T-Cell Counts and Suppression of Plasma Viral Load in Advanced HIV-1 Infected Subjects Failing a First or Second Triple Combination Therapy

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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

Patients may be eligible for this study if they:

  • Are at least 13 years old.
  • Have the signed consent of parent/guardian if under 18 years of age.
  • Are HIV-positive.
  • Have failed 1 or 2 anti-HIV drug combination therapies which had at least 3 anti-HIV drugs each.
  • Have been on stable, triple anti-HIV drug therapy for at least 16 weeks prior to study entry.
  • Have a CD4 count under 300 cells/mm3 within 45 days prior to study entry.
  • Agree not to become pregnant or make anyone else pregnant while on study drugs and for 60 days after stopping drugs.
  • Agree to use 2 methods of birth control while on study drugs and for 60 days after stopping study drugs.
  • Have a negative pregnancy test within 14 days prior to study entry.

Exclusion Criteria

Patients will not be eligible for this study if they:

  • Received treatment for a serious infection or illness that was completed less than 2 weeks prior to study entry or, if they are still receiving treatment, he/she must have been clinically stable for at least 14 days prior to study entry.
  • Are pregnant or breast-feeding.
  • Are using any drugs that affect the immune system, other than those specified by the study.
  • Received an immunization within 30 days prior to study entry.
  • Have had pancreatitis.
  • Have severe neuropathy (a condition affecting the nervous system).
  • Received granulocyte colony-stimulating factor (G-CSF) or granulocyte-macrophage colony-stimulating factor (GM-CSF) within 14 days prior to study entry.
  • Abuse alcohol or drugs.
  • Have any medical condition that would make the patient unable to complete the study.
  • Have used hydroxyurea within 24 weeks prior to study entry.
  • Had hepatitis within 60 days of study entry.

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): NCT00008866

Sponsors and Collaborators
National Institute of Allergy and Infectious Diseases (NIAID)
Study Chair: David Asmuth
Study Chair: Judith Feinberg
Study Chair: Richard Pollard

Responsible Party: National Institute of Allergy and Infectious Diseases (NIAID) Identifier: NCT00008866     History of Changes
Other Study ID Numbers: A5069
10905 ( Registry Identifier: DAIDS ES )
ACTG A5069
Substudy AACTG A5070s
First Posted: August 31, 2001    Key Record Dates
Last Update Posted: May 18, 2012
Last Verified: May 2012

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Drug Therapy, Combination
Drug Administration Schedule
CD4-Positive T-Lymphocytes
RNA, Viral
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
Antineoplastic Agents
Antisickling Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Nucleic Acid Synthesis Inhibitors
Reverse Transcriptase Inhibitors
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Anti-HIV Agents