View clinical trials related to Metabolism, Inborn Errors.
Filter by:The primary goal of this study is to establish a biobank of dried blood spots and urines from a large control cohort and collect several cohorts as large as possible of patients affected or suspected of being affected by rare diseases (mainly hereditary metabolic diseases) or by autism spectrum disorders. A metabolomic database using a high-resolution mass spectrometer (i.e. the "Device") will be generated and specific biomarkers for the diseases will be confirmed or uncovered. The ultimate goal is to facilitate and improve the diagnosis and screening of the patients affected by these disorders, but also to improve the knowledge about the biochemical mechanisms involved over the course of the selected pathologies. High-resolution mass spectrometry allows the measurement of thousands of metabolites in a single analysis. The current biochemical tests used for the diagnosis of hereditary metabolic diseases are only using a combination of maximum a few dozens of biomarkers in one analysis. Objectives Unravel new biomarkers for diagnosis (+/- explore the altered pathways…) Uncover and/or validate newborn screening biomarkers through retrospective analysis of preserved newborn DBS from confirmed patients (useful for first or second tier biochemical NBS testing!) Validation of LC-MS qTOF for metabolomics screening as first line diagnostic test (thousands of metabolites) using diagnostic algorithms (modified z-scores) & continuous optimization by adding new cases and new controls in the database Generation of a biobank of urines and DBS from rare diseases (IEMs) & from a large reference population useful for other research applications
The aim of this study is to report and describe all the patients with confirmed diagnosis of inherited metabolic disease (IMD) treated with orphan medicinal products (OMPs) in a cohort of adult patients followed in a reference center for rare diseases (Lausanne University Hospital, CHUV) from 2017-2022.
Main aims of this project are - To assess the baseline status-quo of transition and "fitness for transfer" in terms of information about the adult centre and team, organisational and practical skills (blood sampling and sending, how to make an appointment etc.), disease- and treatment-related knowledge, health-related quality of life (HrQoL), and self-efficacy in adolescnets with inborn errors of metabolism. Biochemical or physical parameters as appropriate for the respective diseases from 12 months before are documented. - To provide targeted, structured intervention modules (using available and, if necessary, adapted materials). - To measure the effects of these interventions on information about adult services short-term (within a month) and to re-assess all other baseline status-quo parameters long-term (6 and 12 months later). Psychological assessments will be complemented by biochemical or physical parameters as appropriate for the respective diseases and indicative for transition success.
The aim of this study is to report and describe cardiac manifestations associated with IMD in a cohort of patients followed in a reference center for rare diseases (Lausanne University Hospital, CHUV) from 2017-2020.
No additional risk factors have been identified in patients with Inherited Metabolic Diseases (IMD) for contracting or presenting complications of COVID-19 compared to the general population. Yet, IMD patients have cell/tissue alterations that could constitute a potential direct or indirect target for the virus. We do not know the impact of this infection on patients suffering from MHM, nor the possible effect of specific treatment of MHM on the evolution of COVID-19. This study will collect French IMD patients having or having had COVID-19 infection. The main objective is to estimate among IMD patients contracting COVID-19 the frequency of disease aggravation or metabolic decompensation. The secondary objectives will be : a. to evaluate the incidence of COVID-19 diagnosed in a given group of IMD when the number of patients with this IMD is known (Urea Cycle Deficiency, Gaucher Disease). b. to evaluate the impact of IMD on the and severity of COVID-19 infection
A fetal hydrops, also called a fetal anasarca, is the buildup of fluid in the serosa and / or fetal subcutaneous tissue. The diagnosis is made by ultrasound, possibly from the first trimester of pregnancy. The etiologies of hydrops can be immune or non-immune. The historically classic immune causes are linked to fetal-maternal alloimmunizations in erythrocyte blood groups. The implementation of systematic prevention of these anti rhesus immunizations since the 1970s has significantly reduced the incidence of immune hydrops Non-immune hydrops (NIH) now represent 90% of fetal hydrops. Known causes of NIH can be classified in several ways depending on the mechanism or organ involved. The prognosis for NIH is closely linked to the cause. Fetal anemia due to maternal-fetal infections can heal spontaneously or give rise to in utero transfusions. Cardiac rhythm abnormalities are accessible to medical treatment. Chylothorax compressions may benefit from in utero drainage, but chromosomal or metabolic causes cannot benefit from antenatal care. The term of pregnancy in which the hydrops is discovered also has an impact on survival, which however remains poor. In France, certain pathologies can be considered as particularly serious without the possibility of treatment and give rise to a request for medical termination of pregnancy. This possibility is subject to acceptance by two practitioners who are members of a multidisciplinary prenatal diagnostic center (CPDPN). This preliminary multidisciplinary reflection participates in the development of prenatal counseling with the greatest precision in diagnostic hypotheses. This prenatal advice is essential for a couple on the decision to make a pregnancy in progress but also for future pregnancies, given the 25% risk of recurrence due to the autosomal recessive mode of transmission. Thus the current screening strategy for inherited metabolic diseases on amniotic fluid is fragmented. The resulting subdiagnosis explains the objective of the study of using the new high throughput sequencing techniques (NGS) in this indication. This approach should make it possible to reduce the number of cases classified as idiopathic, to allow the parents concerned to receive suitable genetic counseling with a view to new pregnancies, and to refine the knowledge of the prenatal epidemiology of these pathologies.
Human induced pluripotent stem cells (iPSCs), are reprogrammed from somatic cells that can self-renew indefinitely and produce different types of cells. They provide human model cell lines for orphan drug development. It is the goal of this study to define new cellular disease models for Inborn Erors of Metabolism, as enabling tools for both drug discovery and development.
The investigators are studying the effects of exposure to diesel exhaust on lung inflammation in the presence and absence of an inhaled corticosteroid. Although data is mixed, studies show that asthmatics have increased lung inflammation and worse symptoms during periods of higher air pollution despite taking their anti-inflammatory corticosteroid medication. One possible reason is that air pollution exposure may decrease the ability of corticosteroids to combat inflammation. To test this volunteers will inhale either a placebo or a corticosteroid, before sitting in an exposure booth for 2 hours breathing either filtered air or diluted diesel exhaust. Samples will be collected before and after exposure to analyze the effects of budesonide and diesel exhaust exposure.
Succinylcholine is a myorelaxant agent often used during rapid sequence induction for patients who need to undergo general anesthesia but who are at risk of pulmonary aspiration of gastric content. Whereas other myorelaxant agents are monitored with train of four stimulation to assess onset and duration, few anesthesiologists use train of four stimulation for onset of succinylcholine, as the anesthesiologists evaluate the effect with the time from injection (usually one minute) and the muscle fasciculation due to the release of acetylcholine. The data available on onset duration of this drug are old and bases on only few studies, but the succinylcholine if sometime harmful (anaphylaxis , cardiac arrest, bronchospasm). The investigators want to assess the onset time of succinylcholine with an objective toll , the train of four stimulation, and evaluate if the clinical judgment of the anesthesiologist is reliable to predict an adequate moment for endotracheal intubation.
This study evaluates the efficacy of rifampin in the treatment of hypercalcemia and/or hypercalciuria in participants with at least one inactivating mutation of the CYP24A1 gene. Eligible subjects will receive rifampin for a total of 16 weeks during this study.