View clinical trials related to Noonan Syndrome.
Filter by:The purpose of this study is to collect information about safety and effectiveness for long term use of Norditropin®. Participants will attend the medical institution according to usual practice and receive medical care, as agreed with the study doctor.
This study evaluate the efficacy of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-COA) reductase inhibitors, also known as "statins" in the treatment of growth and skeletal abnormalities in children with Noonan syndrome. Half of patients will receive simvastatin while the other half will receive a placebo.
Noonan and LEOPARD syndromes share, with variable severity, different clinical traits, notably craniofacial manifestations, cardiopathies, short stature, and juvenile cancers. The main genetic cause of these syndromes is missense mutation of the gene encoding the ubiquitous tyrosine phosphatase Shp2, found in more than half the patients with NS and in 80% of LS cases. Shp2 plays pivotal roles in development, growth, and metabolism by regulating key signalling pathways (Ras/Mitogen activated protein kinase (MAPK), Phosphoinositide-3 Kinases (PI3K)/Akt) in response to growth factors/hormones. Deregulation of these signalling pathways has been causally linked to NS and LS pathophysiology. This project aims at better understanding hormonal sensitivity abnormalities in patients with Noonan syndrome (NS) or LEOPARD syndrome (LS) caused by mutations of the tyrosine phosphatase Shp2. To reach this goal, the investigators will take advantage of different tissues (fibroblasts ± adipocytes) from patients with NS / LS compared to healthy controls. All patients will have a skin biopsy and only patients about to undergo surgery will have a adipose tissue biopsy.
Noonan syndrome (NS) is a rare genetic disease (incidence 1/2500 live births) characterized by the association of craniofacial manifestations, cardiopathies, short stature, and tumor predisposition. The genetic causes of Noonan Syndrome are mutations of genes involved in the Ras/Mitogen-Activated Protein Kinases (MAPK) pathway, mainly the gene encoding the tyrosine phosphatase Shp2 (50% of patients).Shp2 appears to be involved in many facets of energy metabolism control (glucose homeostasis, adipose tissue function…), through mechanisms that are poorly understood. Several metabolic anomalies (reduced adiposity, improved glucose tolerance) have been recently identified in an original mouse model carrying Shp2 mutation. Moreover, recent clinical survey has shown that adult Noonan Syndrome patients are protected from developping overweight and obesity when compared to the general population. However, the metabolic status associated with Noonan Syndrome condition has not been explored to date.
This trial is conducted in Asia. The aim of the trial is to investigate the long-term efficacy and safety of two doses of NN-220 (somatropin) in short stature due to Noonan syndrome.
This trial is conducted in Europe. The aim of this trial is to obtain the PTPN11 mutation status and investigate the impact of the PTPN11 mutation status on the effect of somatropin (Norditropin®) by use of data obtained in the GHNOO-1658 trial.
This trial is conducted in Europe. The aim of this trial is to evaluate the effect of somatropin (Norditropin®) on final height in children with Noonan syndrome having being treated for up to 10 years with somatropin (Norditropin®) for the attainment of an optimal final height in the original trial S/GHD/004/NOO.
This observational study is conducted globally. The aim of the study is to investigate the effectiveness and safety of real-life treatment with Norditropin®. The study population will consist of children and adults who are on treatment with Norditropin® in accordance with normal clinical practice.
1. Clinical Objective : To improve the growth of these children 2. Genetic objective : A study of the genetics of the syndrome