ESPE Abstracts

Introduction: Tuberous sclerosis complex (TSC) is an autosomal dominant condition caused by a loss-of-function mutation in tumor suppressor genes TSC1/TSC2 which are involved in the inhibition of mTOR signaling implicated in cell proliferation. Major clinical features includes cardiac rhabdomyomas, renal cysts, epilepsy associated to cerebral dysplasia evidenced by cortical tubers and skin manifestation as: angiofibromas, fibrous plaques and the Shagreen patch...

Introduction: Childhood obesity means a Public Health problem. It is related to chronic diseases in adults, a decrease in quality of life, and an increase in social and sanitary costs. In Spain, the National Health Service (ENSE 2017) stood the prevalence of overweight in toddler between 2 to 7 years old, in 18,26% and obesity in 10,30%, no differences between sex. In 2015 the prevalence of overweight and obesity in childhood are 21, 3 % and 6, 2 &...

Background: The C19MC locus microRNA gene cluster is imprinted in the placenta. Imprinted genes control prenatal development and placental functions, and are epigenetically regulated. The factors that affect the DNA methylation status of C19MC regulatory region are unknown, as is the impact of this differential methylation on the offspring’s body size.Objectives: To study in humans 1) the association of placental C19MC DNA...

Background: Primary adrenal insufficiency (PAI) is a rare life-threatening disorder. Data on PAI in children are scanty, with the exception of Congenital Adrenal Hyperplasia (CAH) due to 21-hydroxylase deficiency (21OHD).Objective and hypotheses: Evaluate etiology of PAI in a large cohort of children and characterize clinical presentation in subjects with PAI not due to 21-OHD.Method: Children followed in eight tertiary centers wer...

Background: Hashimoto’s thyroiditis (HT) has been linked to papillary cancer in adults but not in children and adolescents. Moreover, there is no agreement on the more appropriate frequency of thyroid ultrasound (TS) in the follow-up of children with HT.Objective and hypotheses: The aim of the study was to investigate the incidence of thyroid nodules and of thyroid cancer in a large group of children and adolescents (567) with HT followed-up for a m...

Background: Vitamin D adequate concentration is essential for growth, development and health during vital cycle. Hypovitaminosis D pandemic is associated with a wide range of pathologies.Objective and hypotheses: The objectives of the present study were to characterize vitamin D status in children and adolescents residing in Galicia (Northwest of Spain, latitude 43°N) and to determine if serum 25-hydroxy-vitamin D (25(OH)D) concentration is related ...

Introduction: The highest prevalence of children and adolescents with obesity in Europe is observed in the south countries. This epidemic is related to unhealthy eating patterns, decreased physical activity and increased inactivity.Objective: To determine the relationship between adiposity degree and physical activity and inactivity in children and adolescents.Methods: 338 children from 6 to 8 years of age (x=11.11 years);...

Background: The aetiology of congenital hypopituitarism (CH) is unknown in the majority of patients. In our cohort of 200 cases, it was possible to establish the genetic cause in only 13 patients (6.5%). Copy number variants (CNVs) have been implicated as the cause of genetic syndromes with previously unknown aetiology.Objective: To study the presence of CNVs and its relevance in patients with CH of unknown cause associated with complex phenotypes.<p...

Introduction: Imprinted genes are critical for placental function and normal fetal growth and development. Very little is known about the impact of maternal obesity on imprinted genes and their role in postnatal growth and metabolism.Objectives: 1) To identify umbilical cord DNA methylation sites (CpG) associated with gestational weight gain (GWG); 2) to identify which of these CpGs lie within imprinting control regions ...

Introduction: Previous studies showed that non-obese children and adults with Prader-Willi syndrome (PWS) have a low frequency of metabolic syndrome (MetS), while obese ones have a frequency similar to that of non-PWS obese. It is known that individuals born small for gestational age (SGA) have a greater predisposition to the development of MetS. Recent neonatal percentiles of subjects with PWS (Salvatoni et al, Am J Med Genet Part A, 2019) documented...