Adiposity Clinical Trial
Official title:
Influence of Early Adiposity Rebound, Genetic Polymorphisms and GnRHa Treatment on Long-term Outcome of Girls With Idiopathic Central Precocious Puberty.
This study evaluates the influence of early adiposity rebound, genetic polymorphisms and GnRHa treatment on long-term outcome of girls with idiopathic central precocious puberty.
Gonadotropin-releasing hormone (GnRH) analogs are the mainstay of treatment for central precocious puberty (CPP) since 1985. The relatively short time period elapsed since the introduction of this therapy has not allowed until now to carry out exhaustive studies on the long-term evolution of treated patients. This project will analyze the long-term outcomes of patients with CPP treated or not with GnRHas on adult height, body mass index, body composition, metabolic disorders, bone mineralization, gonadal function, and fertility in comparison to a control group. Overweight before puberty is associated to earlier menarche, and conversely, earlier menarche predispose to adult obesity and metabolic disorders. Nevertheless, it is unclear if adult adiposity is a direct consequence of early puberty or if early puberty is a marker of a predisposition to excess adiposity from prepuberty through adult life. Recent data in rodent models support the hypothesis that early nutritional status determines a risk for both childhood and adult obesity and influences pubertal timing. In girls, early weight gain in childhood has been associated with early menarche. Pattern of growth rather than absolute level of fatness seem to be of most importance. So the first aim of this study is to compare the outcomes of CCP patients with or without an early adiposity rebound and to demonstrate that adiposity rebound more than CPP per se or the GnRHas therapy affect the outcomes. Moreover, recent genome-wide association studies have identified obesity-related gene variants associated with earlier age at menarche. The investigators hypothesized that there might be a genetic basis underlying the early programming of both childhood and adulthood adiposity and puberty timing. The investigators thus aim to determine if those obesity-related gene variants associated with an early but not precocious menarche could also be found in CPP, especially in girls with an early adiposity rebound and if their presence may affect adult health. ;
Allocation: Non-Randomized, Intervention Model: Factorial Assignment, Masking: Open Label, Primary Purpose: Treatment
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