ESPE Abstracts

Aggrecan is a structural glycoprotein of the extracellular matrix of cartilage present in the articular cartilage, growth plate and cartilage of the intervertebral disc. Biallelic pathogenic variants are the cause of aggrecan type spondyloepiphyseal dysplasia (OMIM#612813) while the presence of heterozygous pathogenic variants determine Kimberley type spondyloepiphyseal dysplasia (OMIM#608361) and short stature associated or not with acceleration of bone maturation and early o...

Background: Progranulin (PGRN) displays pleiotropic biological functions including on early embryogenesis, cell proliferation, lysosomal or neuronal functioning and wound repair, and has been proposed as a biomarker for metabolic diseases. Increased PGRN levels have been reported in type 2 diabetes, nonalcoholic fatty liver disease and in preeclampsia associated to placental dysfunction. However, the ontogeny of PGRN concentrations and the potential value of P...

Background: severe primary insulin-like growth factor-1 deficiency (SPIGFD) is a rare growth disorder. Recombinant human insulin-like growth factor (IGF-1) (rhIGF-1; Increlex® [mecasermin]) replacement therapy is EU and US-approved for treating growth failure due to SPIGFD. The long-term therapeutic objective of rhIGF-1 treatment in SPIGFD is to improve adult height (AH). Objective: to describe the characteristics, safety and effectiveness data ...

Introduction: ABCD syndrome is characterized by hypercalcemia, hypercalciuria, nephrocalcinosis, and renal impairment, generally under 4 years old. This is a rare cause of pediatric hypercalcemia with only 7 cases published, but it is believed to be underdiagnosed. The suspected mechanism would be associated with overexpression of transient receptor potential channels (TRP) that modulate intestinal absorption of calcium, since TRP-M2 is encoded on chromosome 2...

Background: Congenital Hypothyroidism (CH) is the most common neonatal endocrinologic disorder and one of the most preventable causes of mental retardation and neurological alterations in children. The incidence of CH lies between 1 in 2000-3000 newborns. The replacement therapy with levothyroxine (LT4) should be started immediately since studies show that a rapid normalization of TSH and fT4 optimizes the neurodevelopmental outcome. Infants with Down syndrome...

Introduction: No consensus on vitamin D (VitD) deficiency screening in children and adolescents exists.Aim: To evaluate a sample of patients in whom VitD dosing was performed and determine the rationale for this assessment.Methods: Retrospective, longitudinal study of pediatric patients, from a Portuguese tertiary hospital, who had at least two 25(OH)D level blood sampling between ...

Introduction: Pediatric obesity is is increasing worldwide. Children and adolescents affected are at increased risk of Type 2 Diabetes Mellitus and its cardiovascular complications, starting in young adulthood and linked to insulin resistance and its inflammatory milieu. The SPISE index, calculated using baseline triglycerides, HDL cholesterol, and BMI, shows promise in predicting insulin resistance in this population. It is not affected by insulin secretion p...

Introduction: Polycystic kidney and diabetes syndrome (PCKDD) is an autosomal dominantly inherited disorder caused by HNF-1B mutations associated with a heterogeneous multisystemic phenotype mainly affecting kidney and pancreas, resulting in highly variable nephropathies, and frequently, diabetes diagnosed before the age of 25 yrs. Pancreatic hypoplasia, malformations in the genital tract and hepatic dysfunction may also be observed.<str...

Background: The Global Increlex® Registry (NCT00903110) monitors real-world safety and effectiveness of recombinant human insulin-like growth factor (rhIGF-1; Increlex® [mecasermin]) in severe primary IGF-1 deficiency (SPIGFD). Patient characteristics, effectiveness and safety data from 2008–2023 are described.Methods: Descriptive analyses of registry data from children/adolescents age...

Introduction: Exosomes are extracellular vesicles whose cargo includes proteins that may influence the function of distant cells. It is unknown, however, whether there are differentially expressed proteins (DEPs) in the circulating exosomes of appropriate- vs small-for-gestational-age (AGA vs SGA) infants at birth and, if so, whether such DEPs relate to measures of endocrine-metabolic health and body composition in childhood.Subj...