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

• Status: Completed
• Trial end date: 1993-02-01
• Target enrollment: 0
• Participant gender: All

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.

• Phase: Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)
• Collaborator: Oclassen Pharmaceuticals
• Treatments: Fiacitabine

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.