ESPE Abstracts

Background: Noonan Syndrome (NS) can overlap clinically and biochemically with growth hormone insensitivity [GHI; short stature (SS), low IGF-I and normal/elevated GH levels]. Mutations in multiple genes regulating RAS/MAPK pathway have been identified in NS including LZTR1 variants. Function of LZTR1 is poorly understood and its role in growth retardation is unknown.Objectives: To functionally characte...

Background: Classic congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is a rare autosomal recessive condition characterized by cortisol deficiency and elevated ACTH secretion, resulting in excess androgen production. This exposure to excess androgens contributes to advanced skeletal maturation and reduced growth in puberty. Data from the I-CAH registry were analyzed to identify growth-related characteristics of children and adolescents with...

ISS is a condition in which the height is more than 2 SD below the corresponding mean height for age, sex and population, in whom no identifiable disorder is present. Some ISS patients may have varying degrees of IGF-1 deficiency. Recombinant GH treatment has been used by some authors with variable results. Theoretically, low IGF-I level at presentation may affect their response to GH therapy. The question is: do children with ISS and low IGF-I respond differently to GH therap...

Background: The EU-IGFD registry was established to monitor the safety and effectiveness of recombinant human IGF-I (rhIGF-I) (mecasermin (rDNA origin) injection; Increlex®) for short stature in children with SPIGFD, including those with Laron syndrome (LS).Objective: To report patient characteristics, effectiveness and safety data in clinically relevant patient subgroups.Methods: Data were compiled from this ongoin...

We evaluated growth parameters and endocrine disorders in relation to the quantity of liver iron (LIC) measured by the Ferriscan method and insulin-like growth factor 1 (IGF-I) level in a cohort of adolescents with sickle cell disease (SCD) (n=40) and beta thalassemia major (BTM) (n=52) receiving nearly the same protocol of transfusion and iron chelation therapy since early childhood. Before transfusion, hemoglobin concentration had not been less than 9 g/dl ...

Background: α-klotho is a transmembrane protein which can be cleaved and act as a circulating hormone. Since low α-klotho levels were found in organic GH deficiency (GHD) and high levels in acromegaly, an interaction between α-klotho, GH and linear growth has been suggested.Objective and hypotheses: We investigated the role of α-klotho protein as a reliable marker of GH secretion in short children and the factors influencing its secre...

Introduction: Boys born small for gestational age (SGA) often have undermasculinized genitalia. Little is known about the pubertal development and gonadal function on a longer-term in this specific group of males.Aims: To determine the (pubertal) development and long-term urological and endocrine outcome of undermasculinized boys born SGA compared to undervirilized boys born appropriate for gestational age (AGA).<p c...

Background: PAPP-A2 is a metalloproteinase that specifically cleaves IGFBPs 3 and 5. Papp-a2 knock-out (KO) mice show a reduction in body size and skeletal abnormalities.Objective and hypotheses: Our objective is to report two affected families from Spain and USA. The Spanish family presents a homozygous frameshift mutation in exon 3 of the PAPP-A2 gene (c.1927_ 1928insAT, p.D643fs25X) resulting in a premature stop codon, with 2 of 4 si...

Introduction: Classic congenital adrenal hyperplasia (CAH) caused by 21-hydroxylase deficiency results in impaired synthesis of gluco- and often also of mineralocorticoids. Early treatment with glucocorticoids and mineralocorticoids prevents life-threatening crises. In some centres, additional salt is prescribed in the first year. However, until now the use of salt is controversial and not proved to result in better outcome in studies.<s...

Anthropometric somatotype components show significant resemblance in monozygotic (MZ) and dizygotic twins (DZ) twins within each sex with a greater resemblance within MZ twin pairs than within DZ twin pairs. In many studies a significant positive correlation was found between the parental height and the height of girls with TS.This girl with Turner syndrome {46, X, i(Xq) presented at the age of 7.5 years for evaluation of her short stature. Her clinical ...