Active clinical trials for "Urea Cycle Disorders, Inborn"

Protocol HPN-100-005 was the first study of HPN-100 in pediatric subjects with urea cycle disorders (UCDs) and was a fixed-sequence, open-label, switch over study of HPN-100 with a long-term (12 month) safety extension designed to assess the safety of HPN-100 and to prospectively assess its ability to control blood ammonia as compared with Sodium Phenylbutyrate (NaPBA). Upon DSMB review of the first ten subjects who completed the switch over part of the study, and with DSMB approval, up to an additional 20 subjects were enrolled into the safety extension part of the study. HPN-100 is a triglyceride that has a similar mechanism of action as NaPBA. It is a liquid with minimal taste and odor. Three teaspoons of HPN-100 (~17.4mL) delivers an equivalent amount of PBA to 40 tablets of NaPBA.

This was a randomized, active-controlled, double-blind, cross-over study designed to enroll subjects with UCDs who are being treated with NaPBA.

Urea cycle disorders are inherited illnesses in which the body does not produce enough of the chemicals that remove ammonia, a byproduct of protein metabolism, from the blood stream. Elevated ammonia levels can lead to brain damage and death. Argininosuccinic aciduria (ASA) is a type of urea cycle disorder that is characterized specifically by high levels of argininosuccinic acid, a chemical involved in the urea cycle. People with ASA are at risk for serious liver damage, which may be due to the elevated levels of argininosuccinic acid. Sodium phenylbutyrate (Buphenyl-TM) is a drug that has been used to treat other types of urea cycle disorders. This study will evaluate whether Buphenyl-TM in conjunction with decreased arginine dose (in addition to a normal regimen of protein) will improve short-term liver function and decrease plasma citrulline and ASA levels in people with ASA.

This non-randomized, open-label study was approximately one year in duration and consisted of a short term NaPBA to HPN-100 switchover part involving two overnight stays followed by a 12-month long term treatment period involving monthly visits.

This is a study involving a dietary supplement. Patients with argininosuccinic aciduria will be randomly assigned to receive either a nitric oxide dietary supplement or placebo for 2 weeks, and then crossed-over to receive the other treatment for two weeks. The investigators expect to see that : 1) Patients with ASA will have a decreased ability for their arteries to dilate due to nitric oxide deficiency, 2) Treatment of ASA with the nitric oxide supplement will improve the ability of their arteries to dilate, and 3) Through the testing of subjects' fibroblasts (cells in connective tissue that produce collagen and other fibers), the investigators hope to predict which patients may respond NO supplementation.

This is an open-label study consisting of a transition period to RAVICTI, followed by a safety extension period for at least 6 months and up to 24 months of treatment with RAVICTI, depending on age at enrollment. It is designed to capture information important for evaluating safety, pharmacokinetics and efficacy in young children. Subjects who are followed by or referred to the Investigator for management of their UCD. Subjects eligible for this study will include patients ranging from newborn to < 2 years of age with either a diagnosed or clinically suspected UCD.

The aim of the study is to assess the efficacy of HepaStem treatment in paediatric patients suffering from urea cycle disorders.

The purpose of this study is to determine the safety and tolerability of GT4P administered orally as a single dose, and twice daily for 7 consecutive days, to subjects with hepatic impairment with cirrhosis (Child-Pugh scores of A, B, or C) and to a gender matched and similar age control group with normal hepatic function.

The purpose of this study is to determine whether HPN-100 is safe and tolerable in subjects with Urea Cycle Disorders.

The purpose of this study is to assess the safety and to appraise the efficacy of one cycle of Hepastem (Heterologous Human Adult Liver-derived Progenitor Cells, HHALPC) infusions in paediatric patients suffering from CN or UCD. The study duration: 12 months starting from the day of treatment: 6 months active surveillance and 6 months observation post-infusion.