View clinical trials related to Phenylketonurias.
Filter by:HYPOTHESIS: The investigators hypothesize that KuvanTM therapy could influence nutritional and body composition parameters and neurotransmitter concentrations in pediatric and adult PKU subjects. SUMMARY: Though the investigators know that KuvanTM lowers blood Phe levels and improves tolerance for natural protein in at least half of the PKU (Phenylketonuria) patient population, investigators do not know the full effects this medicine will have on the patient's diet, or what impact the medicine or diet changes will have on the body composition or nutrient status of PKU patients. Since KuvanTM may also help the body produce neurotransmitters, investigators also want to find out if taking KuvanTM changes neurotransmitter levels in PKU patients, and if PKU patients who are benefitting from KuvanTM feel less stigmatized and have a better outlook on life as a result of the treatment. Therefore, the research study has several objectives. These are to investigate the impact KuvanTM therapy has on (1) body composition parameters of PKU patients: such as lean body mass, percent body fat, bone density, weight gain, and growth (2) dietary changes, and the effect of those changes, on intake of calories and essential nutrients (3) changes in blood biomarkers of certain nutrients (4) blood and urine neurotransmitter levels, since these changes could indicate improved neurological functioning, (5) and quality of life of PKU patients, who may feel less burdened due to the dietary freedom KuvanTM provides.
The purpose of this study is to assess the safety and tolerability of injections of rAvPAL-PEG in subjects with PKU.
The Purpose of this study is to provide patients with hyperphenylalaninemia (HPA) due to Phenylketonuria (PKU) access to sapropterin dihydrochloride and to collect more information about the safety of the drug in an expanded access program (EAP) until commercial product is available.
The aim of the study is to confirm the efficacy and safety of BH4 in the treatment of hyperphenylalaninemia caused by phenylalanine hydroxylase deficiency in patients responsive to BH4. The primary objective is to assess the effect of BH4 on phenylalanine tolerance compared to placebo under optimal blood phenylalanine control and to demonstrate safety in 12 months long-term treatment. Additionally population PK will be assessed.
The purpose of this study is to evaluate the ability of Phenoptin to control blood phenylalanine levels in subjects who have hyperphenylalaninemia due to a primary BH4 deficiency and to evaluate the safety of Phenoptin in this population. Some subjects were receiving non-registered formulations of BH4 at enrollment and this treatment was suspended after Part 1 and within one day the subjects started Phenoptin at approximately the same dose.
The purpose of this study is to see if children, who develop coma from malaria, are not making enough of a vitamin-like chemical, tetrahydrobiopterin (BH4), which is required for the brain to function normally. This information may help to identify new ways to treat malaria in the future. Study participants will include 512 children, ages 6 months to 6 years. Participants will be placed into one of 4 groups: well children; children with mild malaria; children without malaria, but with a medical problem involving the brain that requires a lumbar puncture for diagnosis (a procedure in which a needle is placed into an area surrounding the spinal cord and a sample of cerebral spinal fluid is removed); and children with a severe form of malaria affecting the brain called cerebral malaria. Study procedures will include blood samples, urine samples and lumbar puncture, only if necessary for diagnosis as part of standard practice procedures. Participants will be involved in study related procedures for up to 3 weeks.
The objective of this study is to evaluate the safety of long-term treatment with Phenoptin in subjects with phenylketonuria (PKU) who participated in Phase 3 clinical studies with Phenoptin.
We are doing this study to learn more about the early history of universal screening for metabolic disorders such as PKU and galactosemia. In particular, we are interested in learning from our past experience to inform our current plans to expand universal newborn screening. Following standard historical research methodology, we will begin with a review of the historical scholarship on PKU and galactosemia, including more general works on mental retardation, genetics, public health screening, and metabolic disorders. We will also obtain scientific publications and archival sources on the early screening and treatment of these disorders. Lastly, we will conduct oral history interviews with key participants in teh early screening and treatment of PKU and galactosemia.
The primary objective of this trial is to evaluate the ability of Phenoptin to increase phenylalanine (phe) tolerance in children with phenylketonuria who are following a phe-restricted diet.
The main purpose is to test whether treatment with BH4-tablets can replace the protein restrictive diet in patients with mild PKU caused by a certain frequent mutation.