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.
Age range
7 Years – 18 Years
Sex
ALL
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The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Insulin sensitivity determined from the calculation of the Quantitative insulin sensitivity check index (QUICKI).
Timeframe: T0 on an empty stomach