ESPE Abstracts

Background: DICER1 is an endoribonuclease that acts post-transcriptionally by processing mRNA into siRNA and microRNA, thus leading to mRNA downregulation. DICER1 syndrome is usually caused by germline variants and is characterized by a variety of benign or malignant tumors: pleuropulmonary blastoma, ovarian Sertoli-Leydig cell tumor, cystic nephroma, pituitary blastoma and multinodular goitre. Patients with germline aberrations in the DICER1 gene may carry additional...

Background: Since the initiation of neonatal screening-programs for congenital hypothyroidism (CH) in the 1970’s, an increase in the incidence of CH has been observed. This change has been attributed to the gradual use of lower TSH cut-offs that lead to the detection of milder cases of CH. Based on currently used screening cut-offs, CH occurs in approximately 1:2 000 to 1:4 000 newborns, varying by geographic location and ethnicity. A female predominance, approaching a 2:...

Background: The association of GH deficiency (GHD) with central precocious puberty (CPP) has been reported in individuals with central nervous system (CNS) abnormalities, congenital or acquired. Co-existence of GHD and CPP has been rarely reported, always as an isolated, sporadic disorder.Objective and hypotheses: To present the familial occurrence of combined GHD and CPP.Method: GH was measured post L DOPA, glucagon and GHRH and g...

Objectives: GH deficiency (GHD) and small for gestational age (SGA) status are associated with cardiovascular risks. We therefore investigated antiatherogenic effects of GH.Methods: Subfractions of LDL and HDL, lipoprotein-associated phospholipase A2 (Lp-PLA2), and high-sensitivity C-reactive protein (hsCRP) were measured at baseline, after 8 and 52 weeks of GH treatment in 51 short children born SGA (n=33) or with GHD (n=18).<p cla...

Background: X-linked hypophosphatemic rickets (XLHR) represents the most common form of genetic hypophosphatemia. Even though skull and cranio-vertebral anomalies of potential neurosurgical interest are observed in children with XLHR, their actual incidence and characteristics are not well established. We aimed to analyze the incidence of Chiari type I anomalies in children with XLHRMethods and materials: Our retrospecti...

Background: Disproportionate short stature is seen in most individuals with X-linked hypophosphatemia (XLH). Vitamin D and phosphate supplementation can improve growth slightly. Burosumab showed minimal improvement of growth in older children. No growth data of XLH children that started burosumab at a very young age, i.e., between 1 and 4 years, are available.Methods: We included 17 XLH children (11 boys) who started bur...

Objective: Although low birthweight (bw) and unfavourable intrauterine conditions have been associated with metabolic sequelae in later life, little is known about their impact on glucocorticoid metabolism. We studied monozygotic twins with intra-twin bw-differences from birth to adolescence to analyse the long-term impact of bw and catch-up growth on glucocorticoid metabolism.Methods: 46 monozygotic prepubertal twin-pai...

Background: Genetic defects in the Wnt signaling pathway lead to early-onset osteoporosis (EOOP). Romosozumab is a monoclonal antibody against sclerostin, an inhibitor of the Wnt/ß-catenin pathway. Romosozumab has shown great efficacy in adult osteoporosis, however its effect in patients with Wnt-related EOOP is unknown. In monoallelic loss-of-function WNT1 mutations, romosozumab could potentially stimulate the defective Wnt signaling pathway an...

Background: Hypercalcaemia has various etiologies and treatment is often challenging. Therapeutic options include aggressive fluid management, loop diuretics and antiresorptive drugs. Since both hypercalcaemia and bisphosphonates can cause acute kidney injury (AKI), bisphosphonates are not recommended in patients with renal impairment. Denosumab, an antiresorptive human monoclonal antibody, is not associated with AKI and offers a temporary treatment option. Ho...

Introduction-Purpose: In addition to chromosomal abnormalities, a number of genes have been implicated as causes of Disorders of Sexual Development (DSD). The NR5A1 (SF-1) gene expresses a transcription factor that plays a role in steroidogenesis by controlling multiple stages of adrenal and gonadal development, and its mutations have been reported in cases of DSD.Case presentation: A 152/12-year-old teenager ...