ESPE Abstracts

Introduction: Thyroid hormone resistance (THR) is a rare disease (≈ 1/50000) mainly due to thyroid hormone receptor beta gene (THRB) mutations, generally identified in late childhood and adulthood. We report 2 atypical cases of neonatal diagnosis of THR.Case 1: The newborn presented with neonatal respiratory distress due to a voluminous compressive goiter, requiring invasive ventilation. Thyroid function test...

Background: Leprechaunism, due to a mutation of both alleles of insulin receptor gene, is a most severe and precociously life-threatening condition, difficult to treat.Objective and hypotheses: In leprechaunism rhIGF1 may replace insulin through I the insulin-like metabolic properties of its own receptor.Method: rh IGF1 was continuously subcutaneously administered through a.pump from the age of four months and adjusted according to...

Introduction: It is well known that thyroid disease (TD) is more prevalent in patients with Down Syndrome (DS). Among the dysfunctions are congenital hypothyroidism (CH), subclinical hypothyroidism (SC-H), Hashimoto’s thyroiditis (HT) and Graves’ disease (GD).The evaluation of the occurrence of these diseases in patients with DS according to age is still poorly reported.Objective: Verify the prevalence of TD in children and adolescents with DS ...

Background: Osteogenesis imperfecta (OI) is a genetic connective tissue disorder with variable phenotype, mainly characterized by bone fragility, short stature and non-skeleton findings. Since growth failure is a predominant feature of OI, recombinant human growth hormone (rhGH) has been suggested as a potential intervention. We describe two boys with OI type I treated with rhGH.Case Reports: Patient 1 had the first frac...

Background: Studies on the follow-up of 46,XY partial gonadal dysgenesis (PGD) patients till adulthood are scarce and it is important to provide information to parents on the prognosis of gonadal dysgenesis.Objective and hypotheses: To analyze the long term outcomes of 46XY PGD patients in both social sexes regarding testosterone production, social sex adaption and genotype.Method: Retrospective longitudinal study conducted at Hosp...

Background: The mitochondrial enzyme nicotinamide nucleotide transidrogenase (NNT) is essential in the antioxidant defense mechanisms and appears to be essential to the stages of adrenal steroidogenesis that occur inside the mitochondria.Aim: To characterize how mutations in NNT gene impair adrenal steroidogenesis resulting in familial glucocorticoid deficiency (FGD).Methods: Genom...

Introduction: Mutations in the GH1 promoter are a rare cause of isolated GH deficiency (IGHD). In order to find the molecular cause of short stature due to IGHD, three siblings (2 M) born to consanguineous parents without mutations in the GHRHR and GH1 coding regions were screened for mutations in the GH1 promoter and locus control region. All patients harbored two variants (c.−123T>C and −161C>T) in homozygous state in the GH1 promoter, not found in 100 co...

Case Report: Patient 1: a 3.6-yr-old girl presented with very severe hypertriglyceridemia (serum triglyceride level >1000mg/dL) in random sampling in the first year of life. She presented with recurring episodes of abdominal pain, and splenomegaly. There is no history of consanguineous marriage. Maternal and paternal family had history of coronary events at an early age. A genetic panel showed homozygous variant chr8:19.953.365 C>T (p.Ala162Val) in the l...

Background: The etiological investigation of central precocious puberty (CPP) has improved with more precise clinical approach, neuroimaging, and genetic studies. CPP can be caused by congenital or acquired conditions, with or without central nervous system (CNS) lesions. More recently, genetic and epigenetic disorders have been identified in children with CPP, previously classified as idiopathic.Objective: To update the...

Background: The diagnosis of 46,XY disorder of sex development (DSD) due to 5-alpha reductase 2 (5α-RD2) deficiency has been based on testosterone:dihydrotestosterone (T:DHT) ratio, urinary steroid profiling and mutational analysis of SRD5A2 gene. The biochemical hallmarks of 5α-RD2 deficiency include increased T:DHT ratio. However, several difficulties are observed in the DHT measurement leading to misdiagnosis. The mutational analysis of the SRD5A2 has been propose...