ESPE Abstracts

Obesity in humans represents a cumulative retention of a tiny fraction of total energy intake as fat, which is accompanied by growth of the metabolically active, energy demanding, lean body mass. Since the energy balance regulation operates irrespective of the excess fat storage, availability of the required energy supplies is a permissive condition for obesity development. It occurs predominantly among people genetically predisposed and/or living with social or mental challen...

The differences between people in degree of obesity within a given population are attributable to a combination of differences in their genomes and in what they have been exposed to in the environment. The heritability, which indicates the proportion of the phenotypic variance that is due to the genomic variation within this given population, is often estimated to a broad range of 40-80%, dependent on methods used (family versus twin studies), and is often interpreted as defin...

Background and Aim: Several genetic variants associating with hepatic fat content in adults have been identified in genome-wide association studies. Their effects in children remain unclear. This study aimed to test the effect of genetic variants known to associate with hepatic fat in adults, individually and combined as a genetic risk score (GRS), on cardiometabolic traits, and to investigate the predictive ability of the GRS for hepatic steatosis in children...

Background: Studying patients with rare Mendelian diabetes has highlighted molecular mechanisms regulating β-cell pathophysiology. Previous, experimental studies have shown that Class IIa histone deacetylases (HDAC4, 5, 7, and 9) modulate mammalian pancreatic endocrine cell differentiation, function and finally glucose homeostasis.Methods: We performed exome sequencing in one adolescent boy with non-autoimmune di...

Klinefelter Syndrome (KS) affects an estimated 1 in 500-750 male births, yet over 50% of cases remain undiagnosed. Initially characterized as a condition with post-pubertal gonadal failure, KS is now recognized to involve numerous associated signs, symptoms, and comorbidities, underscoring the need for a multidisciplinary care approach. However, the clinical care of people with KS is variable and is rarely supported by good evidence. To better understand the natural history an...

The identification of anamnestic, clinical and instrumental data indicative of pathological FMS plays a pivotal role in the prevention of ACH complications.Objective: identify key cranio-cervical junction(CCJ)neuroradiological features for the surgical choice and for the neuroradiological decompression outcome.Methods: from a total of 191 patients, we selected 24 subjects with ACH (age:<4years)...

Paternally inherited mutations in the DLK1 (delta-like non-canonical Notch ligand 1) gene cause central precocious puberty (CPP) with a metabolic phenotype, suggesting that DLK1 (Delta-like 1 homolog/Preadipocyte factor 1) may link pubertal timing with body composition. However, little is known about circulating DKL1 in normal and precocious puberty.Objective: To evaluate longitudinal changes in circulating DLK1 concentrations i...

Introduction: Sulfation is required for the metabolism of numerous compounds, including proteoglycans, steroid hormones, neurotransmitters, toxic chemicals, and drugs like acetaminophen. The sulfate transporter SLC13A1 is responsible for the intestinal absorption and the renal reabsorption of inorganic sulfate, but loss-of-function mutations in this gene have never been described in man. Here, we describe a male with a biallelic loss-of-function variant, i.e.,...

Background: Achondroplasia is the commonest type of skeletal dysplasia with an incidence of 1 in 20,000 and is due to recurrent and dominantly transmitted, activating mutations in Fibroblast Growth Factor Receptor 3 (FGFR3). Complications during infancy include foramen magnum stenosis and hydrocephalus which may lead to neurological morbidity and sudden unexplained mortality. Early detection and appropriate neurosurgical management can prevent these complications. How...

Background: Achondroplasia is the most common cause of genetic dwarfism with a prevalence of 1/10 000 to 30 000 birth. It is a pathology of dominant inheritance linked to the mutation of the receptor gene growth factor on chromosome 4p16 fibroblastes FGFR3 responsable rhizomelic dwarfism and multiple complications likely to compromise the functional and vital prognosis of patients.Objective and hypotheses: Find the frequency of neurological complications...