A Study of Foscarnet in the Treatment of HIV Infection in Patients Who Have Taken Zidovudine for a Long Time

HIV Infections Clinical Trial

Official title:

Intermittent Foscarnet Therapy for Human Immunodeficiency Virus Infection in Patients Receiving Long-Term Zidovudine Therapy

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00001002
• Other study ID #: ACTG 053
• Secondary ID: 11027
• Status: Completed
• Phase: Phase 1
• Est. completion date: June 1991

Study information

• Verified date: October 2021
• Source: National Institute of Allergy and Infectious Diseases (NIAID)
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To study the toxicity, pharmacokinetics, and antiretroviral effectiveness of combined oral zidovudine (AZT) and intermittent intravenous foscarnet therapy in stable AIDS or AIDS related complex (ARC) patients who have already received AZT for 8 - 52 weeks.

It is hypothesized that the maximum AZT antiretroviral effect, which occurs at 8 weeks of therapy, will be enhanced by 2 weeks of foscarnet treatment, given at the same time by intermittent intravenous infusion. In addition, the further lowering of serum p24 antigen concentration that should occur during combined therapy might continue when oral AZT therapy is continued without foscarnet.

Description:

It is hypothesized that the maximum AZT antiretroviral effect, which occurs at 8 weeks of therapy, will be enhanced by 2 weeks of foscarnet treatment, given at the same time by intermittent intravenous infusion. In addition, the further lowering of serum p24 antigen concentration that should occur during combined therapy might continue when oral AZT therapy is continued without foscarnet.

There is a 4-week prestudy monitoring period during which AZT alone is administered on an outpatient basis, followed by a 2-week study period during which both intravenous foscarnet and oral AZT are administered in the hospital. During the subsequent 6-month follow-up period, oral AZT is administered and patients receive clinical evaluations. AZT is held for 48 hours on days before hospitalization and for 24 hours at the end of the hospitalization.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 12
• Est. completion date: June 1991
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria

Concurrent Medication:

Allowed:

Medication necessary for the patient's welfare at the discretion of the investigator.

Patients must have the following:

• Received zidovudine (AZT) 200 mg every 4 hours (q4h) continuously for 8 - 16 weeks without Grade 3 or higher toxicity.

• Detectable p24 antigen in serum on at least 2 occasions during the prestudy period. All serum p24 antigen concentrations measured during the prestudy period must be at least twice the concentration cutoff value of the assay.

• Capability of giving informed consent.

• Per amendment of 890721, patients must enter the study period by September 30, 1989.

Exclusion Criteria

Co-existing Condition:

Patients with the following will be excluded:

• A history of hypersensitivity reaction to foscarnet or zidovudine (AZT).

• History of Grade 3 or 4 toxicity with AZT.

• Current Grade 2 or higher AZT toxicity.

• Osteomalacia, neoplasm metastatic to bone, or other known bone disease.

• Active opportunistic infection requiring myelosuppressive or nephrotoxic therapy.

Concurrent Medication:

Excluded:

• Antimetabolites.

• Immunomodulators.

• Nephrotoxins.

• Antiviral therapy.

• Myelosuppressive or nephrotoxic therapy.

• Acetaminophen.

Patients with the following will be excluded:

• A history of hypersensitivity reaction to foscarnet or zidovudine (AZT).

• History of Grade 3 or 4 toxicity with AZT.

• Current Grade 2 or higher AZT toxicity.

• Osteomalacia, neoplasm metastatic to bone, or other known bone disease.

• Active opportunistic infection requiring myelosuppressive or nephrotoxic therapy.

Related Conditions & MeSH terms

• Acquired Immunodeficiency Syndrome
• Communicable Diseases
• HIV Infections
• Infections

Intervention

Drug:
• Zidovudine

• Foscarnet sodium

Locations

Country	Name	City	State
United States	Unc Aids Crs	Chapel Hill	North Carolina
United States	University of Minnesota, ACTU	Minneapolis	Minnesota

Sponsors (1)

Lead Sponsor	Collaborator
National Institute of Allergy and Infectious Diseases (NIAID)

Country where clinical trial is conducted

United States, 

References & Publications (2)

Aweeka FT, Gambertoglio JG, van der Horst C, Raasch R, Jacobson MA. Pharmacokinetics of concomitantly administered foscarnet and zidovudine for treatment of human immunodeficiency virus infection (AIDS Clinical Trials Group protocol 053). Antimicrob Agents Chemother. 1992 Aug;36(8):1773-8. — View Citation

Jacobsen MA, van der Horst C, Causey DM, Dehlinger M, Hafner R, Mills J. In vivo additive antiretroviral effect of combined zidovudine and foscarnet therapy for human immunodeficiency virus infection (ACTG Protocol 053). J Infect Dis. 1991 Jun;163(6):1219-22. — View Citation