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A Randomized, Placebo-Controlled Study of the Safety and Efficacy of Efavirenz, Didanosine, and Stavudine in Combination With or Without Hydroxyurea in Antiretroviral Naive or Experienced HIV-Infected Patients

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.
ClinicalTrials.gov Identifier: NCT00002230
Recruitment Status : Completed
First Posted : August 31, 2001
Last Update Posted : June 24, 2005
Information provided by:

Study Description
Brief Summary:
To determine the virologic benefits associated with the addition of hydroxyurea (HU) to combination drug therapy with didanosine (ddI), stavudine (d4T), and efavirenz (DMP) in HIV-infected patients. To assess the safety and tolerance of this regimen, with or without HU.

Condition or disease Intervention/treatment Phase
HIV Infections Drug: Hydroxyurea Drug: Efavirenz Drug: Stavudine Drug: Didanosine Phase 3

Detailed Description:
HU or placebo is added 30-60 days after the initiation of DMP, ddI, and d4T combination therapy. Patients are stratified according to antiretroviral experience (naive or experienced). Patients are followed for 48 weeks to determine safety, efficacy, and effect of treatment on viral, immunologic,and biochemical parameters.

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 100 participants
Primary Purpose: Treatment
Official Title: A Randomized, Placebo-Controlled Study of the Safety and Efficacy of Efavirenz, Didanosine, and Stavudine in Combination With or Without Hydroxyurea in Antiretroviral Naive or Experienced HIV-Infected Patients

Resource links provided by the National Library of Medicine

MedlinePlus related topics: HIV/AIDS
U.S. FDA Resources

Arms and Interventions

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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

Inclusion Criteria

Patients must have:

  • HIV infection, as documented by a licensed ELISA that is confirmed either by Western blot, positive HIV culture, positive HIV antigen, positive plasma HIV RNA, or a second antibody test positive by a method other than ELISA.
  • CD4 cell count of at least 100 cells/mm3 within 30 days of study entry.
  • Over 500 HIV-1 RNA copies/ml as measured by the Roche Amplicor or Ultra Sensitive Assay within 30 days of study entry.
  • Treatment-experienced patients must have documented HIV RNA values of less than or equal to 100,000 copies/ml within 30 days of study entry.

Prior Treatment:


Acute therapy for an infection or other medical illness. Acute therapy must have been completed 14 days prior to the time of study entry.

Exclusion Criteria

Co-existing Condition:

Patients with the following symptoms or conditions are excluded:

Malignancy requiring systemic therapy.

Patients with the following prior conditions are excluded:

  • History of acute or chronic pancreatitis.
  • History of generalized peripheral neuropathy.
  • Inability to tolerate ddI at 200-400 mg/day or d4T at 60-80 mg/day. For purposes of this study, intolerance will be defined as the same recurrent toxicities requiring dose interruptions and dose reductions or permanent discontinuation of the drugs (other than Grade 3 or 4 anemia).

Prior Medication:


Antiretroviral therapy. If antiretroviral-experienced, no prior NNRTI's or HU and no more than 12 weeks experience with ddI and/or d4T. Protease inhibitor experience is allowed. Experienced patients must be on a stable antiretroviral therapy 30 days prior to study screening and continue this regimen until study entry.

Risk Behavior:


Current ethanol abuse by personal history or a report from a primary physician.

Contacts and Locations

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 ClinicalTrials.gov identifier (NCT number): NCT00002230

United States, Illinois
Northwestern Univ Med School
Chicago, Illinois, United States, 60611
Sponsors and Collaborators
Northwestern University
Study Chair: Robert Murphy
More Information

ClinicalTrials.gov Identifier: NCT00002230     History of Changes
Other Study ID Numbers: 296A
First Posted: August 31, 2001    Key Record Dates
Last Update Posted: June 24, 2005
Last Verified: June 1999

Keywords provided by NIH AIDS Clinical Trials Information Service:
Drug Therapy, Combination
Anti-HIV Agents

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
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
Antineoplastic Agents
Antisickling Agents
Anti-HIV Agents