Study of Treatment and Metabolism in Patients With Urea Cycle Disorders
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|ClinicalTrials.gov Identifier: NCT00004307|
Recruitment Status : Unknown
Verified December 2003 by National Center for Research Resources (NCRR).
Recruitment status was: Recruiting
First Posted : October 19, 1999
Last Update Posted : June 24, 2005
RATIONALE: The urea cycle is the process in which nitrogen is removed from the blood and converted into urea, a waste product found in urine . Urea cycle disorders are inherited disorders caused by the lack of an enzyme that removes ammonia from the bloodstream. Gene therapy is treatment given to change a gene so that it functions normally. Studying the treatment and metabolism of patients with urea cycle disorders may be helpful in developing new treatments for these disorders.
PURPOSE: Two-part clinical trial to study the treatment and metabolism of patients who have urea cycle disorders.
|Condition or disease||Intervention/treatment||Phase|
|Amino Acid Metabolism, Inborn Errors||Behavioral: Protein and calorie controlled diet Genetic: Ornithine transcarbamylase vector||Phase 1|
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.
|Study Type :||Interventional (Clinical Trial)|
|Enrollment :||66 participants|
|Official Title:||Therapeutic and Metabolic Studies of Urea Cycle Disorders: Part A: Nitrogen Flux and Ureagenesis; Part B (Closed): Phase I Adenovirus Vector-Mediated Gene Therapy for Ornithine Transcarbamylase Deficiency|
|Study Start Date :||December 1999|
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): NCT00004307
|United States, Texas|
|Baylor College of Medicine||Recruiting|
|Houston, Texas, United States, 77030|
|Contact: Susan Carter 832-822-1630 firstname.lastname@example.org|
|Study Chair:||Brendan Lee||Baylor College of Medicine|