ESPE Abstracts

Background: Congenital central hypothyroidism (CeH) may occur isolated, or in combination with other pituitary hormone deficiencies. Although a third causative gene for CeH was recently reported (IGSF1), the aetiology of isolated CeH has remained unexplained in most cases.Objective and hypotheses: We hypothesized that in three relatives with unexplained isolated CeH a mutation in another gene might be responsible for the phenotype.<p class="...

Background: Heterozygous mutations in the Aggrecan gene (ACAN) cause autosomal dominant short stature with bone age (BA) acceleration, and premature growth cessation.Objective and methods: To characterize the phenotypic spectrum, associated conditions and describe response to growth-promoting therapies, detailed clinical evaluation of 73 mutation positive individuals from 16 families different families with heterozygous ACAN mutations was perfor...

Introduction: The major genetic cause of CPP is the paternally inherited Makorin RING-finger protein 3 (MKRN3) deficiency. Rare patients carry variants in kisspeptin and its receptor and DLK1.Objectives: To identify genetic causes of CPP.Population and methods: MKRN3 Sanger sequencing was performed in 56 unrelated subjects (12 familial non-maternal, 44 sporadic (6 boys)), whole-ge...

Introduction: Ghrelin binds to its receptor GHSR1A, encoded by GHSR, on somatotrophs of the pituitary. Growth hormone (GH) secretion is enhanced by ghrelin binding as well as the receptor’s constitutive activity. Results from in vitro experiments, knock-out mice, and GWAS suggest that heterozygous loss-of-function of GHSR may be associated with short stature, but observations in case studies are equivocal. We aimed to better ch...

Introduction: Among children with short stature, some show persistent IGF-I levels <-2.0 SDS despite a normal growth hormone (GH) response in a stimulation test. This may be caused by conditions that could benefit from recombinant human GH (rhGH) therapy (e.g. GH neurosecretory dysfunction, bioinactive GH, partial GH insensitivity). Therefore, the IGF-I generation test (IGFIGT) was implemented in 2006 using a national, standardized protocol. Children with a...

Introduction: Disorders of sex development are challenging conditions for patients, parents and the interdisciplinary health care team. Sex assignment of these patients needs optimal hormonal profile and molecular diagnosis. This study aimed at finding a new tool for differentiation between partial androgen insensitivity and 5 alpha reductase deficiency especially when the molecular diagnosis is unavailable or highly expensive if available.Methods and Su...

Introduction: Central precocious puberty (CPP) refers to the development of secondary sex characteristics before ages 8 and 9 years in girls and boys, respectively. It is either due to organic brain lesion or idiopathic. Conventionally, Gonadotropin Releasing Hormone (GnRH) stimulation test is a mainstay tool for diagnosis of central precocious puberty in pediatrics. However, it is time consuming and expensive. Therefore, this study was aiming to find an alter...

Background: Thallassemia is a genetic disease with recessive autosomal pattern of inheritance which occurs as a result of disorders in hemoglobin structure clinicians assess endocrine function in patients with thallassemia in various intervals and distinguishing appropriate time for assessment can decrease the mentioned complications and promote their health, we aimed to investigate the prevalence of hypothyroidism and the relation between thyroid hormones and ferritin in pati...

Background: Following a phase of feeding difficulties and underweight in early life, children with Prader-Willi syndrome (PWS) develop hyperphagia and a tendency towards severe obesity. Growth hormone therapy (GH) has been approved in PWS to compensate their growth failure but may exert also additional effects on muscle component and body composition as well.Objectives: We aimed to test if an early initiation of GH thera...

Background: Congenital hypothyroidism is the most common neonatal metabolic disorder and detected at a rate of 1 in 3000 to 4000 live births. Compared to congenital hypothyroidism caused by defects in thyroid development leading to thyroid dysgenesis, thyroid dyshormonogenesis has tendency to be detected at older age and its clinical manifestations are individually different. Thus, to evaluate exact causes and predict clinical course for congenital thyroid dys...