Clinical Trials Logo

Clinical Trial Summary

Infection-related hyperammonemia in patients with urea cycle disorders is an important cause of morbidity and mortality. The relationship between immune system cells and the metabolic pathways used by these cells and inborn errors of metabolism is still under investigation. Current studies are generally based on experiments in mice. The investigators' goal is to study specific T cell subsets to understand the effects of the urea cycle on T cells. The investigators collected blood samples from participants with lysinuric protein intolerance and urea cycle disorders for basic immunophenotyping, lymphocyte proliferation in response to phytohemagglutinin and CDmix, and cytokine analysis involving Th1, Th2, and Th17 and compared them with age-matched healthy controls. They also examined amino acid profiles in sera and supernatants before and after stimulation with PMA-ionomycin.


Clinical Trial Description

The investigators aim to compare cellular immune response of T cell phenotype and proliferative functions in addition to lymphocyte subset analysis between urea cycle disorders and healthy controls. Complete blood counts, immunoglobuline levels, lymptocyte subset analysis and Thelper cells will be analyzed. Additionally, T helper cells will be measured regarding their cytokine profile as Th1, Th2 and Th17. T cell proliferation response and aminoacid profiles in supernatants before and after stimulation will be measured. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05706714
Study type Observational
Source Istanbul University - Cerrahpasa (IUC)
Contact
Status Completed
Phase
Start date April 6, 2021
Completion date September 1, 2023

See also
  Status Clinical Trial Phase
Terminated NCT01948427 - Observational Study That Will Collect Information on Patients With Urea Cycle Disorders (UCDs)
Terminated NCT03933410 - UNLOCKED: A Phase 2, Open-label Trial With KB195 in Subjects With a Urea Cycle Disorder Phase 2
Completed NCT03064048 - Nitric Oxide Supplementation on Neurocognitive Functions in Patients With ASLD N/A
Recruiting NCT04612764 - Liver Disease in Urea Cycle Disorders
Completed NCT05330039 - Characterization of Intestinal Microbiota in Children With Inborn Errors of Metabolism (IEM)
Completed NCT03721367 - Chronic Liver Disease in Urea Cycle Disorders
Completed NCT03911089 - A Collection of Case Studies in Infants With UCD to Evaluate Infant Growth and the Safety of a New Medical Food for UCD N/A
Terminated NCT03181828 - Manipulating the Gut Microbiome Study Phase 1/Phase 2
Completed NCT00472732 - Neurologic Injuries in Adults With Urea Cycle Disorders N/A
Recruiting NCT05076318 - Dysregulated Urea-synthesis at Terminal Uremia N/A
Completed NCT03179878 - Safety and Tolerability of SYNB1020-CP-001 Phase 1
Recruiting NCT04602325 - Systemic Biomarkers of Brain Injury From Hyperammonemia
Withdrawn NCT03884959 - A Safety and Efficacy Study of Infusions of HepaStem in Urea Cycle Disorders Pediatric Patients Phase 2
Recruiting NCT04908319 - Hepatic Histopathology in Urea Cycle Disorders
Completed NCT03335488 - Study of Glycerol Phenylbutyrate & Sodium Phenylbutyrate in Phenylbutyrate Naïve Patients With Urea Cycle Disorders (UCDs) Phase 4
Completed NCT02246218 - A Study of the Safety, Efficacy and Pharmacokinetics of Glycerol Phenylbutyrate in Pediatric Subjects Under 2 Years of Age With Urea Cycle Disorders Phase 4
Completed NCT04248062 - Patient and Observer Reported Outcome Measurements in Inborn Errors of Metabolism
Terminated NCT03343756 - HepaStem Long-Term Safety Registry