Phase II Study of Sodium Phenylbutyrate, Sodium Benzoate, Sodium Phenylacetate, and Dietary Intervention for Urea Cycle Disorders
|First Received Date ICMJE||February 24, 2000|
|Last Updated Date||June 23, 2005|
|Start Date ICMJE||January 1985|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE||Not Provided|
|Original Primary Outcome Measures ICMJE||Not Provided|
|Change History||No Changes Posted|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Phase II Study of Sodium Phenylbutyrate, Sodium Benzoate, Sodium Phenylacetate, and Dietary Intervention for Urea Cycle Disorders|
|Official Title ICMJE||Not Provided|
I. Assess the safety and efficacy of sodium phenylbutyrate, sodium benzoate, sodium phenylacetate, and dietary intervention in patients with urea cycle disorders.
PROTOCOL OUTLINE: This protocol describes several clinical studies of pharmacologic and dietary management in patients with urea cycle disorders.
Patients with carbamyl phosphate synthetase and ornithine transcarbamylase deficiency are treated with a low-protein diet, essential amino acids (for neonatal onset disease), caloric supplementation, oral sodium phenylbutyrate (now approved as a prescription drug 11/97), and citrulline or arginine free base.
Patients with argininosuccinic acid synthetase deficiency are treated with a low-protein diet, caloric supplementation, oral sodium phenylbutyrate (now approved as a prescription drug 11/97), and arginine free base.
Patients with argininosuccinic aciduria (AA) are treated with a low-protein diet, caloric supplementation, and arginine free base. (Discontinued 11/97) Any patient who develops hyperammonemia is treated with intravenous sodium benzoate, sodium phenylbutyrate, and arginine hydrochloride; benzoate and phenylbutyrate are not given to patients with AA.
If ammonium stabilizes at normal or near normal levels, intravenous medications are gradually replaced by oral medications. If there is no significant decrease in ammonium within 8 hours, patients begin hemodialysis.
Concurrent therapy with ondansetron, high caloric intake, and mannitol for elevated intracranial pressure is allowed. Dietary and intravenous nitrogen is prohibited. (Discontinued 11/97)
|Study Type ICMJE||Interventional|
|Study Phase||Phase 2|
|Study Design ICMJE||Primary Purpose: Treatment|
|Condition ICMJE||Amino Acid Metabolism, Inborn Errors|
|Study Arms||Not Provided|
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||Not Provided|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
PROTOCOL ENTRY CRITERIA:
Urea cycle deficiency, i.e.: Carbamyl phosphate synthetase deficiency (CPSD) Ornithine transcarbamylase deficiency (OTCD) Argininosuccinic acid synthetase deficiency (ASD) Argininosuccinic aciduria (AA)
|Ages||18 Years to 65 Years (Adult)|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries ICMJE||Not Provided|
|Removed Location Countries|
|NCT Number ICMJE||NCT00004767|
|Other Study ID Numbers ICMJE||199/11753, JHUSM-11753|
|Has Data Monitoring Committee||Not Provided|
|U.S. FDA-regulated Product||Not Provided|
|Plan to Share Data||Not Provided|
|IPD Description||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||National Center for Research Resources (NCRR)|
|Collaborators ICMJE||Johns Hopkins University|
|Information Provided By||Office of Rare Diseases (ORD)|
|Verification Date||December 2001|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP