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Hyperammonemia clinical trials

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NCT ID: NCT06178718 Completed - Hyperammonemia Clinical Trials

A Phase 1, Single-center, Double-blind, Placebo-controlled Study of TNP-2092 Capsules, and the Food Effect Study After Single-dose Oral Administration of TNP-2092 Capsules

Start date: June 6, 2016
Phase: Phase 1
Study type: Interventional

The aim of this study is to evaluate the safety, tolerability, and pharmacokinetic characteristics of TNP-2092 Capsules in liver cirrhosis patients with hyperammonemia; and to preliminarily observe the effects of the study drug on blood ammonia and hepatic encephalopathy related clinical symptoms and signs, neuropsychological indicators, and quality of life in liver cirrhosis patients with hyperammonemia.

NCT ID: NCT06135675 Completed - Hyperammonemia Clinical Trials

Safety, Tolerability, Pharmacokinetic Characteristics and Preliminary Efficacy of TNP-2092 Capsules in Liver Cirrhosis Patients With Hyperammonemia

Start date: August 27, 2020
Phase: Phase 1/Phase 2
Study type: Interventional

The aim of this study was to evaluate the safety, tolerability, and pharmacokinetic characteristics of TNP-2092 Capsules in liver cirrhosis patients with hyperammonemia; and to preliminarily observe the effects of the study drug on blood ammonia and hepatic encephalopathy related clinical symptoms and signs, neuropsychological indicators, and quality of life in liver cirrhosis patients with hyperammonemia.

NCT ID: NCT05842837 Enrolling by invitation - Propionic Acidemia Clinical Trials

A Non-Interventional Post-Authorization Study of Carbaglu for the Treatment of Hyperammonemia Due to MMA and PA

Start date: September 15, 2022
Phase:
Study type: Observational

The objective of this study is to obtain short- and long-term clinical safety data in pediatric and adult patients with PA and MMA treated with Carbaglu, including pregnancy and fetal outcomes. This is an observational/non-interventional study. Patients will be treated per the prescribing information and routine medical practice. Only available data will be collected as part of the study.

NCT ID: NCT05754372 Recruiting - Clinical trials for Hyperammonemic Encephalopathy

Optimalisation of the Treatment of Acute Neonatal Hyperammonaemia

Start date: January 15, 2023
Phase:
Study type: Observational

Acute neonatal hyperammonemia is associated with poor neurological outcomes and high mortality. A user-friendly and widely applicable algorithm - based on kinetics - to tailor the treatment of acute neonatal hyperammonemia. A single compartmental model was calibrated assuming a distribution volume equal to the patient's total body water (V), as calculated using Wells' formula, and dialyzer clearance as derived from the measured ammonia time-concentration curves during 11 dialysis sessions in four patients (3.2 +/- 0.4 kg). Based on these kinetic simulations, dialysis protocols could be derived for clinical use with different body weights, start concentrations, dialysis machines/dialyzers and dialysis settings (e.g., blood flow QB). By a single measurement of ammonia concentration at the dialyzer inlet and outlet, dialyzer clearance (K) can be calculated as K = QB[(Cinlet - Coutlet)/Cinlet]. The time (T) needed to decrease the ammonia concentration from a predialysis start concentration Cstart to a desired target concentration Ctarget is then equal to T = (-V/K)LN(Ctarget/Cstart). By implementing these formulae in a simple spreadsheet, medical staff can draw an institution-specific flowchart for patient-tailored treatment of hyperammonemia. The aim of this study is to validate these formula with a prospective study.

NCT ID: NCT05687474 Recruiting - Cystic Fibrosis Clinical Trials

Baby Detect : Genomic Newborn Screening

Start date: September 1, 2022
Phase:
Study type: Observational

Newborn screening (NBS) is a global initiative of systematic testing at birth to identify babies with pre-defined severe but treatable conditions. With a simple blood test, rare genetic conditions can be easily detected, and the early start of transformative treatment will help avoid severe disabilities and increase the quality of life. Baby Detect Project is an innovative NBS program using a panel of target sequencing that aims to identify 126 treatable severe early onset genetic diseases at birth caused by 361 genes. The list of diseases has been established in close collaboration with the Paediatricians of the University Hospital in Liege. The investigators use dedicated dried blood spots collected between the first day and 28 days of life of babies, after a consent sign by parents.

NCT ID: NCT05349435 Terminated - Hyperammonemia Clinical Trials

A Healthy Volunteer Study to Compare Fezagepras (PBI-4050) With Sodium Phenylbutyrate

Start date: May 13, 2022
Phase: Phase 1
Study type: Interventional

The purpose of this study is to compare the safety, tolerability and pharmacokinetic profile of fezagepras (PBI-4050) to that of sodium phenylbutyrate (PBA) when both products are given as single ascending doses to healthy adult subjects.

NCT ID: NCT05040178 Recruiting - Propionic Acidemia Clinical Trials

An Observational Study of Carbaglu® for the Treatment of MMA and PA in Adults and Pediatrics

Start date: June 30, 2022
Phase:
Study type: Observational

To obtain short-term and long-term clinical safety information, in pediatric and adult patients with PA and MMA treated with Carbaglu®.

NCT ID: NCT04984798 Withdrawn - Clinical trials for Hyperinsulinism-Hyperammonemia Syndrome

Vitamin E Efficacy in HI/HA

Start date: November 2022
Phase: Phase 2
Study type: Interventional

Congenital hyperinsulinism (HI) is a rare disorder of pancreatic beta cell insulin secretion that causes persistent and severe hypoglycemia starting at birth. Hyperinsulinism/hyperammonemia (HI/HA) syndrome is the second most common type of congenital HI and is caused by activating mutations in glutamate dehydrogenase (GDH). Patients with HI/HA exhibit fasting hyperinsulinemic hypoglycemia, protein-induced hypoglycemia, hyperammonemia, seizures, and intellectual disability independent of hypoglycemia. These effects result from abnormal GDH activity in the beta cells, liver and kidney cells, neurons, and astrocytes. The only available treatment for HI/HA syndrome is diazoxide, which acts on the beta cells to decrease insulin secretion but has no effect on GDH activity itself or on other cell types. Thus, there remains a significant unmet need for improved therapies for this disorder. Pre-clinical data show that vitamin E inhibits GDH activity in human cell lines and improves fasting hypoglycemia in a GDH HI mouse model. Pilot study data show that vitamin E supplementation with a moderate dose is well-tolerated in children and adults with HI/HA syndrome, while continuing diazoxide treatment. However, most subjects continued to exhibit protein-induced hyperinsulinemic hypoglycemia. We hypothesize that a higher vitamin E dose will inhibit GDH over-activity in subjects with HI/HA syndrome, resulting in improved hyperinsulinemic hypoglycemia, reduced blood ammonia concentration, and decreased seizure activity.

NCT ID: NCT04602325 Recruiting - Clinical trials for Hypoxic-Ischemic Encephalopathy

Systemic Biomarkers of Brain Injury From Hyperammonemia

Start date: July 9, 2020
Phase:
Study type: Observational

Ammonia is a waste product of protein and amino acid catabolism and is also a potent neurotoxin. High blood ammonia levels on the brain can manifest as cytotoxic brain edema and vascular compromise leading to intellectual and developmental disabilities. The following aims are proposed: Aim 1 of this study will be to determine the chronology of biomarkers of brain injury in response to a hyperammonemic (HA) brain insult in patients with an inherited hyperammonemic disorder. Aim 2 will be to determine if S100B, NSE, and UCHL1 are altered in patients with two other inborn errors of metabolism, Maple Syrup Urine Disease (MSUD) and Glutaric Acidemia (GA1).

NCT ID: NCT04022941 Completed - Clinical trials for Chronic Liver Disease

Efficacy and Safety of Sodium Benzoate in the Management of Hyperammonemia in Infants, Children and Adolescent With Chronic Liver Disease.

Start date: April 1, 2017
Phase: N/A
Study type: Interventional

Subject will be randomize in two groups. Group A will receive drug packets containing 2.5 gm sodium benzoate and 5 gm powdered table sugar for 5days.Since the dosage of Sodium Benzoate is Sta t250mg/Kg and then 250mg/Kg in next 24 hours, each patient would be given 750mg /kg stat and 750mg /kg in next 24 hours,keeping in view that 2/3 of powder used would be powdered sugar in the intervention arm. The dose of the powder used would be doubled in case of the ammonia level more than 300 mcg/dl. The drug will be prepared in sterile water and administered per orally or via the nasogastric tube. All the enrolled patients would be treated with SMT as per the recommendations of the EASL/AASLD 2014 guidelines of management of hepatic encephalopathy. Group B will receive 7.5 gm packets of powdered table sugar for 5 days as placebo which is similar in appearance and taste as sodium benzoate.