Part A: Glutamine to Urea Metabolism Study in Urea Cycle Disorders - Part B (Closed): Adenovirus Vector-Mediated Gene Therapy for Ornithine Transcarbamylase Deficiency
Protein and calorie controlled diet
+ Ornithine transcarbamylase vector
Brain Diseases+13
+ Brain Diseases, Metabolic
+ Central Nervous System Diseases
Treatment Study
Summary
Study start date: December 1, 1999
Actual date on which the first participant was enrolled.PROTOCOL OUTLINE: This protocol involves 2 clinical studies. Part A is a metabolic study of glutamine conversion to urea at different levels of protein intake, while on and off medications. Part B is a dose escalation study of a first-generation adenoviral vector with an E1 deletion and an E3 deletion substitution (d1309) expressing ornithine transcarbamylase (OTC). In Part A, diet is controlled for protein and calories. Intravenous glutamine and urea are administered. Controls are given intravenous arginine, phenylacetate, and benzoate. In Part B, groups of 3 patients are given a single low, intermediate, or high dose of intravenous OTC vector. Allopurinol is administered every 12 hours for 12 days. As of 12/10/1999, Part B of the study is closed.
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.66 patients to be enrolled
Total number of participants that the clinical trial aims to recruit.Treatment Study
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Any sex
Biological sex of participants that are eligible to enroll.From 6 Months to 64 Years
Range of ages for which participants are eligible to join.Healthy volunteers allowed
If individuals who are healthy and do not have the condition being studied can participate.Conditions
Pathology
Criteria
PROTOCOL ENTRY CRITERIA: Part A. Patients at least 6 months old with ornithine transcarbamylase deficiency (OTC), i.e.: Hemizygous OTC or homozygous autosomal recessive disorder with evidence of complete enzyme deficiency Hemizygous OTC male with late presentation and presumed evidence for residual enzyme activity OTC heterozygotes (molecular diagnosis) with severely symptomatic to asymptomatic disease Obligate heterozygotes for autosomal recessive disorder (parent or genotyped sibling) Normal adult volunteers and genotyped siblings entered as controls Part B. Metabolically stable heterozygous OTC females aged 18 to under 65 Orotic acid level at least 5 times normal on allopurinol Symptoms ranging from severe to asymptomatic acceptable No prior hospitalization for hyperammonemia Exclusion criteria (Parts A and B): Acute or chronic intercurrent illness Pregnancy Acute hyperammonemia
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location