The Safety and Effectiveness of FIAC in the Treatment of Cytomegalovirus (CMV) in Patients With AIDS

NCT ID: NCT00000981

Last Updated: 2012-12-18

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 78 participants
• Study Classification: INTERVENTIONAL
• Study Completion Date: 1993-02-28

Brief Summary

To find oral doses of FIAC (a pyrimidine nucleoside analog) that are effective in treating cytomegalovirus (CMV) viremia in HIV-infected immunocompromised patients; to determine tolerance and safety of FIAC in this patient population; and to determine pharmacokinetics following multiple doses of FIAC. (An example of another nucleoside analog effective against retroviruses such as HIV is zidovudine (AZT).) CMV infection is a medically significant opportunistic disease in patients with HIV-related infection. The purine nucleoside ganciclovir has been used to treat AIDS patients with CMV disease. Although ganciclovir is useful in treating CMV disease, such treatment is frequently complicated by hematologic (blood) toxicity. Also, treatment is difficult because it requires daily intravenous dosing. Test tube studies show that FIAC and its primary breakdown product FIAU are highly and specifically active against several viruses including CMV. A single-dose, pharmacokinetic (blood level) study showed that FIAC, when taken orally, is readily absorbed into the bloodstream, and most of it is converted to FIAU.

Detailed Description

CMV infection is a medically significant opportunistic disease in patients with HIV-related infection. The purine nucleoside ganciclovir has been used to treat AIDS patients with CMV disease. Although ganciclovir is useful in treating CMV disease, such treatment is frequently complicated by hematologic (blood) toxicity. Also, treatment is difficult because it requires daily intravenous dosing. Test tube studies show that FIAC and its primary breakdown product FIAU are highly and specifically active against several viruses including CMV. A single-dose, pharmacokinetic (blood level) study showed that FIAC, when taken orally, is readily absorbed into the bloodstream, and most of it is converted to FIAU.

Patients are treated as outpatients if general health permits. This is continued for up to 90 days or until failure on basis of efficacy, tolerance, or toxicity. The dose escalation between groups of patients uses the formula n + 0.7n. Entry of new patients at the next higher dose is based on results of antiviral, tolerance, and safety data for the prior cohort when they have received at least 14 days of therapy. Consecutively qualifying patients are enrolled for each dose group and not based on either disease severity or expected tolerance. Although not formally randomized due to the sequential nature of the study and serious medical condition of the patients, every attempt to avoid bias in assigning a patient to a dose is made. Patients are advised to avoid heavy exercise within 24 hours of any laboratory tests.

Conditions

Cytomegalovirus Infections; HIV Infections

Keywords

Retinitis; AIDS-Related Opportunistic Infections; Pyrimidine Nucleosides; Drug Evaluation; fiacitabine; Cytomegalovirus Infections; Acquired Immunodeficiency Syndrome; Antiviral Agents

Study Design

• Primary Study Purpose: TREATMENT

Interventions

Fiacitabine

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

Concurrent Medication:

Allowed:

• Pentamidine aerosol for prophylaxis of recurrent Pneumocystis carinii pneumonia (PCP) in patients currently receiving such treatment.

Prior Medication:

Allowed:

• Zidovudine (AZT) but only if patient has been taking the drug for > 6 weeks at a dose = or < 600 mg/day, and had < 10 percent decrease in hematocrit, neutrophils, and platelets in the last 30 days. Those off AZT must have been off it for > 1 month.

Patients must:

• Have documented cytomegalovirus (CMV) viremia or viruria.
• Have a diagnosis of HIV infection by ELISA or Western blot.
• Be able to participate as an outpatient.
• Be ambulatory.
• Grade 0 or 1 AIDS Clinical Trial Group toxicity grades for specified laboratory tests.
• Be competent to sign informed consent.
• Be able to cooperate with the treatment plan and evaluation schedule.

NOTE:

• The screening tests must be initiated and completed within 4 weeks prior to the first dose of FIAC.

Concomitant diseases allowed:

• Stable mucocutaneous Kaposi's sarcoma.
• Superficial or uncomplicated infections such as thrush.

Exclusion Criteria

Co-existing Condition:

Patients with the following are excluded:

• HIV wasting syndrome (involuntary weight loss > 10 percent of baseline body weight and/or chronic diarrhea or weakness and documented fever for at least 30 days).
• Clinical or x-ray evidence of bronchitis, pneumonitis, pulmonary edema, effusion, or suspected active tuberculosis.
• Any unstable medical condition including serious cardiovascular, infectious, oncologic, renal, or hepatic condition.
• Cytomegalovirus end organ disease.
• Kaposi's sarcoma requiring chemotherapy.
• Systemic fungal infection requiring amphotericin therapy.
• Diagnosis of idiopathic thrombocytopenic purpura (persistent platelet counts < 100000 platelets/mm3 for = or > 3 months).

Patients with the following are excluded:

• HIV wasting syndrome.
• Clinical or x-ray evidence of bronchitis, pneumonitis, pulmonary edema, effusion, or suspected active tuberculosis.
• Any unstable medical condition including serious cardiovascular, infectious, oncologic, renal, or hepatic condition.
• Cytomegalovirus (CMV) end organ disease e.g., retinitis, hepatitis, gastroenteritis.

Prior Medication:

Excluded within 4 weeks of study entry:

• Zidovudine (AZT).
• Acyclovir.
• Ganciclovir (DHPG).
• Foscarnet.
• Interferon.
• Other drug with putative anticytomegaloviral activity.
• Any immunostimulating drug not specifically allowed.

• Minimum Eligible Age: 13 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Oclassen Pharmaceuticals

INDUSTRY

Sponsor Role: collaborator

National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role: lead

Locations

Univ of Alabama at Birmingham

Birmingham, Alabama, United States

Univ of California / San Diego Treatment Ctr

San Diego, California, United States

Natl Institute of Health

Bethesda, Maryland, United States

Univ of Washington / Madison Clinic

Seattle, Washington, United States

Countries

United States

Other Identifiers

R89-001-01, 02, 03, 04

Identifier Type: -

Identifier Source: secondary_id

ACTG 122 FIAC

Identifier Type: -

Identifier Source: org_study_id