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

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ClinicalTrials.gov Identifier: NCT00004705
Recruitment Status : Completed
First Posted : February 25, 2000
Last Update Posted : March 25, 2015
University of North Carolina
Information provided by:
FDA Office of Orphan Products Development

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.

Condition or disease Intervention/treatment Phase
Cystic Fibrosis Drug: amiloride Drug: uridine Not Applicable

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.

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Study Type : Interventional  (Clinical Trial)
Primary Purpose: Treatment
Study Start Date : September 1996
Study Completion Date : January 1999

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cystic Fibrosis
Drug Information available for: Amiloride

Information from the National Library of Medicine

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Ages Eligible for Study:   4 Years and older   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


--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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00004705

Sponsors and Collaborators
FDA Office of Orphan Products Development
University of North Carolina
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Study Chair: Michael R. Knowles University of North Carolina
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ClinicalTrials.gov Identifier: NCT00004705    
Other Study ID Numbers: 199/13446
First Posted: February 25, 2000    Key Record Dates
Last Update Posted: March 25, 2015
Last Verified: March 1999
Keywords provided by FDA Office of Orphan Products Development:
cardiovascular and respiratory diseases
cystic fibrosis
genetic diseases and dysmorphic syndromes
rare disease
Additional relevant MeSH terms:
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Cystic Fibrosis
Pathologic Processes
Pancreatic Diseases
Digestive System Diseases
Lung Diseases
Respiratory Tract Diseases
Genetic Diseases, Inborn
Infant, Newborn, Diseases
Natriuretic Agents
Physiological Effects of Drugs
Acid Sensing Ion Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Epithelial Sodium Channel Blockers
Diuretics, Potassium Sparing