A Phase II Double-Blind Study of Two Doses of SC-49483 in Combination With Zidovudine (ZDV) Versus ZDV

October 27, 2021 updated by: National Institute of Allergy and Infectious Diseases (NIAID)

To determine the safety and anti-HIV activity of two doses of SC-49483 in combination with zidovudine (AZT) versus AZT alone. To determine the influences of viral phenotype on the anti-HIV activity of these treatment regimens.

SC-49483 has no inherent activity against HIV-1 but is converted in the intestinal wall to SC-48334, which has demonstrated anti-HIV activity. Since SC-49483 causes significantly less gastrointestinal toxicity than SC-48334, the combination of SC-49483 with AZT may improve the benefits of both drugs in patients with HIV infection.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

SC-49483 has no inherent activity against HIV-1 but is converted in the intestinal wall to SC-48334, which has demonstrated anti-HIV activity. Since SC-49483 causes significantly less gastrointestinal toxicity than SC-48334, the combination of SC-49483 with AZT may improve the benefits of both drugs in patients with HIV infection.

Patients are randomized to receive AZT alone or in combination with one of two doses of SC-49483, administered three times daily. Treatment continues for 16 to 24 weeks. Per 07/19/94 amendment: At the end of 24 weeks, blinded treatment continues for an additional 4 weeks, at which time patients may receive open-label drug on an optional basis for 90 days.

Study Type

Interventional

Enrollment

210

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Alabama
      • Birmingham, Alabama, United States
        • Alabama Therapeutics CRS
    • California
      • Los Angeles, California, United States, 90033
        • USC CRS
      • Palo Alto, California, United States
        • Stanford CRS
      • San Francisco, California, United States, 94110
        • Ucsf Aids Crs
    • Colorado
      • Aurora, Colorado, United States
        • University of Colorado Hospital CRS
    • Florida
      • Miami, Florida, United States
        • Univ. of Miami AIDS CRS
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern University CRS
      • Chicago, Illinois, United States, 60612
        • Rush Univ. Med. Ctr. ACTG CRS
      • Chicago, Illinois, United States, 60640
        • Weiss Memorial Hosp.
      • Chicago, Illinois, United States
        • Cook County Hosp. CORE Ctr.
    • Indiana
      • Indianapolis, Indiana, United States
        • Indiana Univ. School of Medicine, Infectious Disease Research Clinic
      • Indianapolis, Indiana, United States
        • Methodist Hosp. of Indiana
    • Missouri
      • Saint Louis, Missouri, United States
        • Washington U CRS
      • Saint Louis, Missouri, United States, 63112
        • St. Louis ConnectCare, Infectious Diseases Clinic
    • New York
      • Buffalo, New York, United States, 14260
        • SUNY - Buffalo, Erie County Medical Ctr.
      • New York, New York, United States
        • Beth Israel Med. Ctr. (Mt. Sinai)
      • Rochester, New York, United States
        • Univ. of Rochester ACTG CRS
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27514
        • Unc Aids Crs
      • Raleigh, North Carolina, United States
        • Wake County Health and Human Services CRS
    • Ohio
      • Cincinnati, Ohio, United States
        • Univ. of Cincinnati CRS
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States
        • Hosp. of the Univ. of Pennsylvania CRS
    • Washington
      • Seattle, Washington, United States, 98104
        • University of Washington AIDS CRS

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

13 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria

Concurrent Medication:

Required:

  • PCP prophylaxis (trimethoprim/sulfamethoxazole, dapsone, or aerosolized pentamidine) in patients with CD4 count <= 200 cells/mm3.

Allowed:

  • Topical antifungal agents, ketoconazole, fluconazole, and itraconazole for candidiasis or disseminated fungal infections, as medically indicated.
  • Maintenance therapy for Mycobacteria disease with isoniazid, ethambutol, rifampin, pyrazinamide, clofazimine, ciprofloxacin, clarithromycin, or rifabutin.
  • Maintenance therapy for toxoplasmosis with pyrimethamine, sulfadiazine, or clindamycin.
  • Maintenance therapy for herpes simplex virus with acyclovir at <= 1000 mg/day.
  • Recombinant erythropoietin and G-CSF, if indicated.
  • Antibiotics for bacterial infections.
  • Symptomatic treatment such as antipyretics, analgesics, nonsteroidal anti-inflammatory agents, and antiemetics.

Concurrent Treatment:

Allowed:

  • Localized radiation therapy and limited intralesional therapy for cutaneous Kaposi's sarcoma.

Patients must have:

  • Documented HIV infection.
  • Per 07/19/94 amendment, one of the following:
  • CD4 count 150 - 350 cells/mm3 within 60 days prior to study entry AND prior AZT for no more than 12 months cumulative (given with or without ddI or ddC).
  • CD4 count 50 - 350 cells/mm3 within 60 days prior to study entry AND no prior antiretroviral therapy.
  • MT-2 cell assay within 60 days prior to study entry.

NOTE:

  • Minimal Kaposi's sarcoma is permitted.

Exclusion Criteria

Co-existing Condition:

Patients with the following condition are excluded:

  • Malignancy other than minimal Kaposi's sarcoma.

Concurrent Medication:

Excluded:

  • Antiretroviral therapies (other than study drug).
  • Biologic response modifiers.
  • Systemic corticosteroids for > 21 consecutive days.
  • Foscarnet.
  • Systemic cytotoxic chemotherapy for a malignancy.

Patients with the following prior conditions are excluded:

  • History of cataracts.
  • History of intolerance to AZT at <= 600 mg/day.
  • Unexplained temperature >= 38.5 degrees C that persists for any 7 days within the 30 days prior to study entry.
  • Chronic diarrhea (defined as >= 3 stools per day) that persists for any 15 days within the 30 days prior to study entry.

Prior Medication:

Excluded:

  • More than 6 months (more than 12 months per 07/19/94 amendment) cumulative prior therapy with AZT.
  • Prior induction or maintenance therapy with foscarnet.
  • Any investigational drug within 30 days prior to study entry.
  • Prior SC-49483 or SC-48334.
  • Prior ddC, ddI, or stavudine (d4T) as monotherapy.
  • Interferon or interleukin within 30 days prior to study entry.
  • Prior non-nucleoside reverse transcriptase inhibitors (e.g., NVP, ATV).
  • Systemic corticosteroids for > 21 consecutive days.
  • Acute treatment for a serious infection or any opportunistic infection within 14 days prior to study entry.
  • Prior combination therapy with AZT, ddI, and/or ddC within 30 days prior to study entry.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Masking: Double

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Allergy and Infectious Diseases (NIAID)

Collaborators

G D Searle
Glaxo Wellcome

Investigators

  • Study Chair: Saag M

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • Johnson VA, Bassett RL, Stanley KE, Saag MS, Fischl MA. Predictors of syncytium-inducing viral phenotype in a phase II double-blind trial of SC-49483 plus ZDV vs. ZDV. Conf Retroviruses Opportunistic Infect. 1997 Jan 22-26;4th:102 (abstract no 205)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 7, 2022

Primary Completion

December 7, 2022

Study Completion (Actual)

July 1, 1995

Study Registration Dates

First Submitted

November 2, 1999

First Submitted That Met QC Criteria

August 30, 2001

First Posted (Estimate)

August 31, 2001

Study Record Updates

Last Update Posted (Actual)

October 28, 2021

Last Update Submitted That Met QC Criteria

October 27, 2021

Last Verified

October 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ACTG 259
  • 11236 (DAIDS-ES)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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