ESPE Abstracts

Background: Heterozygous de novo variants in SAMD9 cause the complex multisystem growth disorder, MIRAGE syndrome. Core features are myelodysplasia, infection, restricted growth, adrenal hypoplasia, genital/gonadal phenotypes, and enteropathy. However, the range of additional associations is expanding and includes disrupted placental development, poor post-natal growth, and other endocrine features. Milder phenotypes are also described, such ...

Introduction: Steroidogenic factor1 (SF1/NR5A1) regulates adrenal and sex development and function. SF1 mutations manifest with a broad phenotype; generally in 46,XY individuals with disorders of sex development (DSD) and in women with ovarian insufficiency. So far, no genotype–phenotype correlation has been found. We hypothesized that the broad phenotype of SF1 mutations may be due to a second hit in a gene with similar function. Liver receptor homolog-1 (LRH1/<...

Background: Several studies have examined the relationship between type 1 diabetes and bone mass, which reported contradictory data on BMD, bone remodelling markers, and bone quality. Nevertheless an incresead prevalence of osteopenia was observed among patients with duration of disease of >6 years.Objective and hypotheses: The aim of the study was to investigate the potential negative impact of type 1 diabetes on bone status in a group of children w...

Background: Cleidocranial dysplasia (CCD; MIM 119600) is a rare congenital autosomal dominant skeletal dysplasia characterized by hypoplastic or aplastic clavicles, late closure of the fontanelles, open skull sutures, dental anomalies, moderately short stature and a variety of other skeletal features. CCD is caused by mutations, deletions or duplications in the runt-related transcription factor 2 gene (RUNX2), which encodes for a protein essential for osteoblast differentiatio...

Background: Several studies have examined the relationship between type 1 diabetes and bone mass, which reported contradictory data on BMD, bone remodelling markers and bone quality. Nevertheless an incresead prevalence of osteopenia was observed among patients with duration of disease of >6 years.Objective and hypotheses: The aim of the study was to investigate the potential negative impact of type 1 diabetes on bone status in a group of children wi...

Background: Inter-individual differences in the metabolism of cortisol have been postulated to emerge during puberty, and might be explained by a complex interplay of genetic and environmental factors. The aim of the current study was to estimate the relative contributions of genetic, shared environmental, and unshared environmental factors on cortisol metabolism in a longitudinal twin cohort assessed at pre-pubertal, mid-pubertal and post-pubertal ages....

Introduction: Pathogenetic mutations in the HSD17B3, located on chromosome 9q22, lead to 17β-hydroxysteroid dehydrogenase type 3 (17β-HSD3) isoenzyme deficiency, etiopathogenetic for a disorder of sex development (DSD) with 46 XY karyotype and female phenotype at birth. 17β-HSD3 isoenzyme, expressed at testicular tissue, catalyzes the synthesis of testosterone from Δ4-androstenedione, allowing the correct development of male external genit...

Context: Congenital hypothyroidism from thyroid dysgenesis (CHTD) is mainly a sporadic and non-syndromic condition occurring in 1:4,000 live births. In contrast to rare cases of syndromic monogenic CHTD, non-syndromic (NS) CHTD shows low familial recurrence risk (~2%) and low concordance rate between MZ twins, suggesting a two-hit scenario combining post-zygotic events with either a de novo monogenic mutation or incomplete penetrance of polyg...

Background: Minipuberty denotes a period 1–6 months postnatally in boys during which a transient activation of the hypothalamic-pituitary-gonadal axis is observed. This early hormone activation can be used diagnostically in patients suspected of pituitary deficiency and differences in sex development. However, its significance for prediction of reproductive function in healthy young men is unknown.Objective: To eval...

Purpose: We aimed to determine the frequency and distribution of intracranial pathologies in patients over 8 years of age by evaluating MRI images of patients diagnosed with early puberty-rapidly progressive.Materials and Methods: The study comprised 118 female patients diagnosed with precocious puberty (PP) and rapidly progressive early puberty (RPEP). The onset of puberty in girls before the age of 8 years is defined a...