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CompletedNCT00000916Updated Oct 29, 2021

A Study of the Safety and Effectiveness of Hydroxyurea in Patients on Potent Antiretroviral Therapy and Who Have Less Than 200 Copies/ml of HIV RNA in Their Blood

A Phase 2 interventional study of Indinavir sulfate and Lamivudine/Zidovudine in HIV Infections, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 34 sites in United States. Open to participants aged 13 Years and older. Per ClinicalTrials.gov, last updated 2021-10-29.

Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
399
Allocation
Randomized
Ages
13 Years and older
Sex
All
01

Study summary

This study compares the safety and effectiveness of continuing your current anti-HIV medications to that of adding or switching some of your anti-HIV medications. It will follow the effect of these medication changes, including the addition of hydroxyurea (HU), on long-term viral suppression. Other medications which may be added include didanosine (ddI) and/or stavudine (d4T).

Patients receiving combination antiretroviral therapy with indinavir (IDV), zidovudine (ZDV)(or d4T) and lamivudine (3TC) show viral suppression for two years or more. Discontinuation of one or two of these drugs results in prompt loss of the viral suppression. Other studies show that addition of HU to some reverse transcriptase inhibitor treatments results in increased antiviral effects. This study will provide further information on the effect of adding HU to a treatment regimen with respect to long-term viral suppression.

Read the detailed description

Previous ACTG studies show that discontinuation of one or two of a three-drug regimen (IDV, ZDV, 3TC) leads to prompt loss of viral suppression in the plasma. In this trial, it will be determined whether adding hydroxyurea (HU) to a suppressive regimen increases long term viral suppression. Important safety information on the tolerance of HU regimen will be characterized in asymptomatic patients with viral suppression.

Patients are equally randomized to one of three arms and receive treatment as follows:Arm A: IDV plus ddI plus d4T plus HU placebo. Arm B: IDV plus ddI plus d4T plus HU. Arm C: IDV plus 3TC/ZDV (or d4T plus 3TC). Patients are monitored every 8 weeks with plasma HIV RNA levels and CD4 cell counts.

02

Conditions studied

  • HIV Infections

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Keywords

  • Drug Therapy, Combination
  • HIV Protease Inhibitors
  • Hydroxyurea
  • Reverse Transcriptase Inhibitors
  • Anti-HIV Agents
  • Viral Load
03

In context

HIV Infections

4,258 studies on the registry are indexed under HIV Infections; 240 are open to participants now.

This study's enrollment of 399 is above the median of 83 across 3,251 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,401 studies on the registry; 179 are open to participants now.

Of its 396 completed or terminated interventional studies of FDA-regulated products, 294 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
13 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

You may be eligible for this study if you:

  • Are 13 years or older.
  • Have documented HIV-1 infection.
  • Are currently receiving combined IDV, ZDV(or D4T), and 3TC for at least 6 consecutive months, resulting in HIV RNA less than 200 copies/ml and CD4 cell count greater than 200 cells/mm3.
  • Had a CD4 count greater than 100 cells/mm3 before starting current anti-HIV therapy.
  • Are of childbearing age and agree to practice abstinence or use of combined barrier and hormonal methods of birth control during and for 3 months after the study.

Exclusion criteria

Exclusion Criteria

You will not be eligible for this study if you:

  • Have taken various medications and have various laboratory results (see technical abstract).
  • Have cancer requiring chemotherapy.
  • Have an unexplained fever for 7 days or diarrhea for 15 days in the month before the start of the study.
  • Had prior peripheral neuropathy or hepatitis.
  • Recently underwent radiation, experimental, or infection therapy.
  • Are pregnant or breastfeeding.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Enrollment
399 participants

Interventions

  • DrugIndinavir sulfate
  • DrugLamivudine/Zidovudine
  • DrugHydroxyurea
  • DrugLamivudine
  • DrugStavudine
  • DrugZidovudine
  • DrugDidanosine
06

Study locations

34 sites
  • Alabama Therapeutics CRS
    Birmingham, Alabama 35294, United States
  • Stanford CRS
    Palo Alto, California 943055107, United States
  • Ucsd, Avrc Crs
    San Diego, California 921036325, United States
  • San Mateo County AIDS Program
    San Mateo, California 943055107, United States
  • Harbor-UCLA Med. Ctr. CRS
    Torrance, California 90502, United States
  • University of Colorado Hospital CRS
    Aurora, Colorado 80262, United States
  • Univ. of Miami AIDS CRS
    Miami, Florida 331361013, United States
  • Univ. of Hawaii at Manoa, Leahi Hosp.
    Honolulu, Hawaii 96816, United States
  • Northwestern University CRS
    Chicago, Illinois 60611, United States
  • Weiss Memorial Hosp.
    Chicago, Illinois 60640, United States
  • Indiana Univ. School of Medicine, Wishard Memorial
    Indianapolis, Indiana 462025250, United States
  • Indiana Univ. School of Medicine, Infectious Disease Research Clinic
    Indianapolis, Indiana 46202, United States
  • Univ. of Iowa Healthcare, Div. of Infectious Diseases
    Iowa City, Iowa 52242, United States
  • Tulane Hemophilia Treatment Ctr.
    New Orleans, Louisiana 70112, United States
  • Johns Hopkins Adult AIDS CRS
    Baltimore, Maryland 21287, United States
  • Massachusetts General Hospital ACTG CRS
    Boston, Massachusetts 02114, United States
  • Beth Israel Deaconess Med. Ctr., ACTG CRS
    Boston, Massachusetts 02215, United States
  • University of Minnesota, ACTU
    Minneapolis, Minnesota 55455, United States
  • St. Louis ConnectCare, Infectious Diseases Clinic
    Saint Louis, Missouri 63112, United States
  • Washington U CRS
    Saint Louis, Missouri, United States
  • Univ. of Nebraska Med. Ctr., Durham Outpatient Ctr.
    Omaha, Nebraska 681985130, United States
  • Beth Israel Med. Ctr. (Mt. Sinai)
    New York, New York 10003, United States
  • NY Univ. HIV/AIDS CRS
    New York, New York 10016, United States
  • Beth Israel Med. Ctr., ACTU
    New York, New York, United States
  • Univ. of Rochester ACTG CRS
    Rochester, New York 14642, United States
  • Unc Aids Crs
    Chapel Hill, North Carolina 275997215, United States
  • Carolinas HealthCare System, Carolinas Med. Ctr.
    Charlotte, North Carolina 28203, United States
  • Regional Center for Infectious Disease, Wendover Medical Center CRS
    Greensboro, North Carolina 27401, United States
  • Univ. of Cincinnati CRS
    Cincinnati, Ohio 452670405, United States
  • Case CRS
    Cleveland, Ohio 44106, United States
  • MetroHealth CRS
    Cleveland, Ohio 441091998, United States
  • The Ohio State Univ. AIDS CRS
    Columbus, Ohio 432101228, United States
  • Hosp. of the Univ. of Pennsylvania CRS
    Philadelphia, Pennsylvania 19104, United States
  • University of Washington AIDS CRS
    Seattle, Washington 98104, United States
07

References and documents

Publications

  • Havlir DV, Gilbert PB, Bennett K, Collier AC, Hirsch MS, Tebas P, Adams EM, Wheat LJ, Goodwin D, Schnittman S, Holohan MK, Richman DD; ACTG 5025 Study Group. Effects of treatment intensification with hydroxyurea in HIV-infected patients with virologic suppression. AIDS. 2001 Jul 27;15(11):1379-88. doi: 10.1097/00002030-200107270-00007. PubMed 11504959 ↗
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 29, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00000916
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Responsible party
Sponsor
First posted
Aug 31, 2001
Completion
Aug 2004
Last update
Oct 29, 2021

Study contacts

Havlir D; Richman D
study chair
Collier A
study chair
Hirsch M
study chair
Tebas P
study chair
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.

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