Clinical trials: Amino Acid Metabolism
Urea Cycle Disorder
Manipulating the Gut Microbiome Study
The objective is to determine if acetohydroxamic acid (AHA) can prevent hydrolysis of urea by inhibiting the bacterial urease of gut flora of both healthy control adults as well as adults with urea cycle disorders
- Trial name
- NCT03181828
- Testing
- Acetohydroxamic Acid Oral Tablet, No treatment
- Where
- United States
- Volunteers
- 4 people, healthy volunteers welcome
- Sponsor
- Nicholas Ah Mew
CBS Deficiency
Effect of Acetaminophen and N-Acetylcysteine on Liver Metabolism on Homocystinuria
In homocystinuria due to cystathionine beta synthase (CBS) deficiency or classical homocystinuria, decreased blood cysteine levels are observed.
- Trial name
- NCT04015557
- Testing
- Acetaminophen, N-acetylcysteine
- Where
- Brazil
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Hospital de Clinicas de Porto Alegre
Metabolism, Inborn Errors, Amino Acid Metabolism, Inborn Errors
An Evaluation of Nutritional Status, Body Composition, and Dietary Intakes of Filipino Pediatric Patients With Inborn Errors of Intermediary Protein Metabolism
In the Philippines, a disease is considered rare if it affects one in every 20,000 individuals. About 75% of rare diseases in the country, including inborn errors of intermediary protein metabolism (IEIPM), are of genetic in…
- Trial name
- Project SIBS (NCT07837336)
- Where
- 14 sites in Philippines
- Volunteers
- 176 people, healthy volunteers welcome
- Sponsor
- Food and Nutrition Research Institute, Philippines
Urea Cycle Disorder
Chronic Liver Disease in Urea Cycle Disorders
This is a pilot, cross-sectional study to assess liver stiffness and markers of hepatic injury, function, and fibrosis in patients with urea cycle disorders.
- Trial name
- NCT03721367
- Testing
- Diagnostic Ultrasound
- Where
- United States
- Volunteers
- 28 people
- Sponsor
- Baylor College of Medicine
Cytomegalovirus Retinitis, HIV Infections
A Study of Ganciclovir in the Treatment of Cytomegalovirus of the Eyes
To determine whether alternating oral ganciclovir with intravenous ( IV ) ganciclovir can prevent relapse of Cytomegalovirus ( CMV ) retinitis and improve quality of life in AIDS patients.
- Trial name
- NCT00001062
- Testing
- Ganciclovir
- Where
- 6 sites in United States
- Volunteers
- 25 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Urea Cycle Disorder
Study of Glycerol Phenylbutyrate & Sodium Phenylbutyrate in Phenylbutyrate Naïve Patients With Urea Cycle Disorders (UCDs)
This is a randomized, controlled, open-label parallel arm study to assess the safety, tolerability, pharmacokinetics and ammonia control, of RAVICTI® as compared to Sodium phenylbutyrate (NaPBA) in urea cycle disorder subjects…
- Trial name
- NCT03335488
- Testing
- RAVICTI, NaPBA
- Where
- 11 sites in United States, Italy and 2 more
- Volunteers
- 16 people
- Sponsor
- Amgen
Solid Organ Transplantation
Observational Study Comparing the Efficacy of Ganciclovir as a Function of Blood Exposure to the Drug During a Curative or Preemptive Treatment
This study aims to better define the target range of ganciclovir trough concentrations by investigating the relationship between ganciclovir concentration and the time to undetectable CMV-DNA load, in preemptive and curative…
- Trial name
- GANEX (NCT03088553)
- Testing
- Therapeutic Drug Monitoring
- Where
- France
- Volunteers
- 138 people
- Sponsor
- Rennes University Hospital
Gastrointestinal Stromal Tumor of Rectum
Preoperative Imatinib Mesylate Combined With Rectal-sparing Surgery in Patients With c-KIT Gene-mutant Rectal GIST
Prior to the implementation of preoperative imatinib mesylate therapy, a considerable percentage (ranging from 34.5% to 67.5%) of individuals diagnosed with rectal gastrointestinal stromal tumors (GIST) underwent abdominoperineal…
- Trial name
- PIRKER (NCT05970900)
- Testing
- Imatinib Mesylate, Local resection
- Where
- China
- Volunteers
- 23 people
- Sponsor
- Fujian Medical University Union Hospital
Cytomegalovirus Retinitis, HIV Infections
A Study of the Safety and Tolerance of Long-Term Therapy With Intravenous Cytovene (Ganciclovir Sodium) for Cytomegalovirus Retinitis in Persons With AIDS
To evaluate the safety and tolerance of long-term ganciclovir (DHPG) therapy for newly diagnosed macular threatening Cytomegalovirus (CMV) retinitis in AIDS patients.
- Trial name
- NCT00002034
- Testing
- Zidovudine, Ganciclovir
- Where
- 9 sites in United States, Canada
- Volunteers
- 100 people
- Sponsor
- Hoffmann-La Roche
Protein Metabolism
Effects of Protein Type and Mineral Form on Amino Acid Availability
To compare postprandial plasma amino acid availability, expressed as incremental area under the curve (iAUC), over a 6 hour period following ingestion of 25 g of different protein isolates in healthy, young adults.
- Trial name
- ProMin (NCT07677098)
- Testing
- Protein beverage
- Where
- Netherlands
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Phenylketonuria, Hyperphenylalaninemia
Biological Variation of Phenylalanine in Patients With Hyperphenylalaninemia
Phenylketonuria (PKU) is a rare disease where the level of phenylalanine (one of the amino acids) in the body is greatly increased. High levels can cause brain damage, especially in babies and children.
- Trial name
- NCT01869972
- Where
- 2 sites in Canada
- Volunteers
- 32 people
- Sponsor
- Hamilton Health Sciences Corporation
Hypertension (HTN), Hyperhomocysteinemia
Homocysteine and Early Diastolic Dysfunction in Newly Diagnosed Hypertension
This prospective single-center observational study aims to evaluate the relationship between elevated plasma homocysteine levels and early echocardiographic abnormalities in patients with newly diagnosed essential hypertension.
- Conditions
- Hypertension (HTN), Hyperhomocysteinemia, Diastolic Dysfunction
- Trial name
- HHT-EDD (NCT07480265)
- Testing
- Homocysteine Measurement and Echocardiography
- Where
- Turkey (Türkiye)
- Volunteers
- 500 people
- Sponsor
- Necmettin Erbakan University
Phenylketonuria (PKU) and Hyperphenylalaninemia
Phenylketonuria and Hyperphenylalaninemia Nutrition Study
The mainstay of PKU treatment is a low-phenylalanine diet (i.e restriction of natural protein), and supplementation with a protein substitute (a mixture of amino acids free from phenylalanine, also containing micronutrients and…
- Trial name
- NCT01879995
- Where
- 2 sites in Switzerland
- Volunteers
- 30 people
- Sponsor
- University of Zurich
Muscle Metabolism
The Muscle Protein Synthetic Response of Algal and Fungal Protein
Dietary protein intake is vital for the maintenance of skeletal muscle mass and health. The production of animal-based proteins sources is associated with growing environmental and ethical challenges.
- Trial name
- SCAM (NCT05016557)
- Testing
- Protein ingestion
- Where
- United Kingdom
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Exeter
Prediabetic State
Effects of Branch Chain Amino Acids on Glucose Tolerance in Obese Pre-Diabetic Subjects
Branching chain amino acids (BCAA) have both beneficial and detrimental effects of on metabolism have been established and therefore warrants further investigation.
- Trial name
- BCAA (NCT02684565)
- Testing
- BCAA High Protein supplement, BCAA Low Protein supplement
- Where
- United States
- Volunteers
- 11 people
- Sponsor
- University of California, Los Angeles
Phenylketonurias
Life With Phenylketonuria. Adult Neurological Outcome of PCU Screened Patients From 1971 to 2002.
You were detected during the neonatal period for phenylketonuria and you benefited from the diagnosis of an adapted dietetic care, and this for a variable duration according to the recommendations followed at that time.
- Trial name
- PCU (NCT04433728)
- Where
- France
- Volunteers
- 42 people
- Sponsor
- University Hospital, Lille
Healthy Men
Metabolic Availability of Lysine From Millet in Adult Men
Protein is the key determinant of growth and bodily functions. The quality of food proteins depend on their amino acid content and the amount of amino acids used by the body to make proteins.
- Trial name
- NCT03339167
- Testing
- Metabolic availability of lysine in millet
- Where
- Canada
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- The Hospital for Sick Children
Phenylketonuria
Kuvan Therapy in Phenylketonuria (PKU): The Effect of Blood Phenylalanine Concentration on Kuvan Response
The investigators will investigate the effect of blood phenylalanine on Kuvan responsiveness in the same patients with PKU when their blood phenylalanine concentrations are altered by diet.
- Trial name
- NCT00841100
- Testing
- Kuvan, Diet
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- University of Miami
Protein Metabolism
Validating IAAO for Muscle Outcomes
Consuming dietary protein stimulates whole-body and muscle protein synthesis, the latter of which is typically measured using invasive primed constant infusions of stable isotopes with concurrent muscle biopsies.
- Trial name
- VIM (NCT07317921)
- Testing
- Protein + Stable Isotope Tracer Beverage
- Where
- Canada
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Argininosuccinate Lyase Deficiency, Urea Cycle Disorder
Nitric Oxide Supplementation on Neurocognitive Functions in Patients With ASLD
This is a study involving a dietary supplement. Patients with argininosuccinate lyase deficiency (ASLD) will be randomly assigned to receive either a nitric oxide dietary supplement or placebo for 24 weeks, and then crossed-over…
- Conditions
- Argininosuccinate Lyase Deficiency, Urea Cycle Disorder, Urea Cycle Disorders, Inborn, Argininosuccinic Aciduria
- Trial name
- NCT03064048
- Testing
- Neo-ASA
- Where
- United States
- Volunteers
- 16 people
- Sponsor
- Baylor College of Medicine