View clinical trials related to Prader-Willi Syndrome.
Filter by:This trial is conducted globally. The aim of this trial is to investigate the effect of liraglutide for weight management in paediatric subjects with Prader-Willi Syndrome.
The hyperghrelinemia of children with PWS provides a unique model by which to explore the hormonal and metabolic effects of orexigenic hormones in normal and pathologic conditions. An important question to be addressed by this proposed research includes the macro-nutrient regulation of ghrelin and PYY in obese children and children with PWS. As ghrelin antagonists are considered potential future anti-obesity agents, it is essential to gain understanding of the developmental, nutritional and hormonal regulation of this important orexigenic hormone in children.
This multi-center prospective observational study is designed to track birth outcomes and perinatal correlates to the Panorama prenatal screening test in the general population among ten thousand women who present clinically and elect Panorama microdeletion and aneuploidy screening as part of their routine care. The primary objective is to evaluate the performance of Single Nucleotide Polymorphism (SNP)-based Non Invasive Prenatal Testing (NIPT) for 22q11.2 microdeletion (DiGeorge syndrome) in this large cohort of pregnant women. This will be done by performing a review of perinatal medical records and obtaining biospecimens after birth to perform genetic diagnostic testing for 22q11.2 deletion. Results from the follow-up specimens will be compared to those obtained by the Panorama screening test to determine test performance. Specific test performance parameters will include: PPV, specificity, and sensitivity.
The purpose of this study is to determine presence of central adrenal insufficiency in children with Prader Willi Syndrome using low dose (1 mcg) ACTH stimulation test compared to results of overnight metyrapone test.
The purpose of this study was to evaluate the effects of a once daily subcutaneous injectable formulation of setmelanotide in obese participants with Prader-Willi syndrome on tolerability, weight loss, and hyperphagia-related behavior. The study drug (setmelanotide and placebo) was administered in a blinded fashion.
The PWS is a genetic disease with intellectual disabilities associated with multiple manifestations in other body systems. It is characterized by hypothalamic-pituitary abnormalities with severe hypotonia during the early years of life, conditioning feeding difficulties. Hyperphagia appears later, causing severe obesity in pre - school ages. Other endocrine abnormalities associated produce short stature, GH deficiency and hypogonadotropic hypogonadism. These patients also have varying cognitive dysfunction associated as well as learning problems, compounded by the development of psychological-psychiatric and behavioral problems language. The aetiology of GH decreased secretion of the SPW is controversial, it is known that IGF -1 levels are reduced in children and adults with PWS. The rational use of GH is derived from knowledge of comorbidities observed in PWS, which seem to be related to GH deficiency: hypotonia, altered body composition, decreased growth, even obesity. • The GH is accepted since 2000 for the treatment of PWS. Following fatal episodes in our country, it was decided to start treatment at 2 years of age in an arbitrary manner, but not in the U.S. or France. Subsequent studies have found that GH per se is not a risk factor for mortality. The currently published data supporting the benefits of GH treatment when started between 4 and 6 months of life, even some experts advocate starting at 3 months, but due to the lack of consensus on the age of onset treatment, despite the benefits of your home at an early age before the onset of obesity often starts around 2 years of life. HYPOTHESIS The use of GH is safe and effective in patients with PWS children under 2 years old.
The Prader-Willi syndrome (PWS) includes severe neonatal hypotonia with impaired suckling leading to failure to thrive in the most severe cases, subsequently followed by an early onset of morbid obesity with hyperphagia and deficit of satiety, combined with other endocrine dysfunction probably due to hypothalamic dysfunction. The pathophysiological mechanism of the occurrence of the 2 main nutritional phases of PWS is unknown. Swaab reported a deficit in the oxytocin (OT)-producing neurons of the paraventricular nucleus in the brain of these patients. In addition of its well-known anorexigenic effect, OT is involved in establishing and maintaining social codes. Moreover in a PWS mouse model generated from a MAGEL2 KO gene a single OT injection at 5 hr of life prevent the early death observed in 50 % of the new born mice by recovering normal suckling. Interestingly this effect is no longer observed if OT injection takes place later. Our hypothesis is that early administration of OT in babies with PWS may improve suckling and possibly infant-mother interactions. In our recent study (manuscript in preparation), we have shown that a single intranasal administration of OT is well tolerated. This escalating dose study is designed to evaluate the tolerance of repeated intranasal administration of OT in 3 steps (4IU every other day, 4 IU daily, 4IU twice daily) in babies younger than 5 months with PWS.
Evaluate the efficacy and safety after treatment of Eutropin® inj. compared to Genotropin® in infants/toddlers with Prader-Willi syndrome
• This is a single-center, open-label, single-arm study with a double-blind, placebo-controlled, randomized withdrawal extension. Patients are initiated on a DCCR dose of about 1.5 mg/kg (maximum starting dose of 145 mg) and are titrated every 14 days to about 2.4 mg/kg, 3.3 mg/kg, 4.2 mg/kg, and 5.1 mg/kg (maximum dose of 507.5 mg). These DCCR doses are equivalent to diazoxide doses of 1.03, 1.66, 2.28, 2.9, and 3.52 mg/kg. The administered dose will be as close to the mg/kg dosing as can be achieved by the available dose strengths of DCCR. Patients will be up-titrated at each visit at the discretion of the investigator. All patients will be continued in the double-blind, placebo-controlled, randomized withdrawal extension. Any patient who showed an increase in resting energy expenditure and/or a reduction in hyperphagia from Baseline through Day 55 or Day 69 will be designated a responder, whereas all others will be designated non-responders. Responders will be randomized in a 1:1 ratio either to continue on active treatment at the dose they were treated with on Day 69 or to the placebo equivalent of that dose for an additional 4 weeks. Non-responders will continue open label treatment during the extension.
Individuals with Prader-Willi syndrome (PWS) have been found to have a deficit of oxytocin-producing neurons and decreased oxytocin receptor gene function, so the purpose of this study is to determine if oxytocin (OT) administration will improve some of the aspects of Prader-Willi syndrome that are particularly troublesome for children and their families (the insatiable appetite and social behaviors). The research questions are: 1. Does intranasal oxytocin cause any side effects in children with PWS? 2. Does intranasal oxytocin administration alter appetite or behaviors in PWS?