Study of Uridine Triphosphate (UTP) as an Aerosol Spray for Cystic Fibrosis

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT00004705

Enrollment

Unknown

Registered

2000-02-25

Start date

1996-09-30

Completion date

1999-01-31

Last updated

2015-03-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystic Fibrosis

Keywords

cardiovascular and respiratory diseases, cystic fibrosis, genetic diseases and dysmorphic syndromes, rare disease

Brief summary

OBJECTIVES: I. Determine the stability of uridine triphosphate (UTP) and examine the metabolism of exogenous nucleotides on airway epithelial surfaces in patients with cystic fibrosis. II. Determine the acute safety and efficacy of aerosolized UTP in children with cystic fibrosis.

Detailed description

PROTOCOL OUTLINE: Patients may be treated on any of three different regimens. Patients may be treated on more than one regimen, if they meet the eligibility requirements. Patients on regimen A are adults and receive uridine triphosphate (UTP) by inhalation, followed immediately by bronchoscopy. Patients on regimen B are children, aged 4 to 10 years. Patients receive up to 4 graded doses of UTP by inhalation on day 1. On day 2, patients receive a single dose of UTP. Patients receive amiloride followed by UTP by inhalation on day 3. Patients on regimen C are children, aged 4 to 18 years. Patients inhale a radiolabelled (technetium 99m) monodisperse iron oxide aerosol. Radiation deposited in the patient's lungs is monitored. Patients are randomized to receive one of 4 different aerosols (vehicle; UTP; amiloride; or UTP plus amiloride), which is inhaled for 20 minutes. Patients are followed 24 hours after aerosol exposure. Regimen D is a dose escalation study in which patients are aged 9 to 40 years. Patients receive either the vehicle or UTP by inhalation 3 times daily for 3 days. Cohorts of 4 patients each are entered at each dose level.

Interventions

DRUGamiloride

DRUGuridine

Study design

Primary purpose

TREATMENT

Eligibility

Sex/Gender

ALL

Age

4 Years to No maximum

Healthy volunteers

Inclusion criteria

PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Diagnosis of mild to moderate cystic fibrosis Small production of daily airway secretions Stable pulmonary course --Prior/Concurrent Therapy-- Radiotherapy: No radiation within 12 months to cause patient to exceed annual limits Other: No chronic medication for reactive airways disease At least 12 hours since inhaled beta-adrenergic agonists At least 24 hours since systemic theophylline --Patient Characteristics-- FEV1 greater than 50% predicted Other: Not pregnant Must perform reproducible spirometry

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026