ESPE Abstracts

Introduction: Improvements in the treatment of acute lymphoblastic leukaemia (ALL) and non-Hodgkin lymphoma (NHL) have increased survival, with the consequent concern about the long-term effects that childhood chemotherapy may have on ovarian function. AMH constitutes an indirect, reliable biomarker of the ovarian reserve, useful for the assessment of cancer therapy-related ovarian damage.Aim: To evaluate small ovarian f...

Background: Hypogonadism has been associated with cardiovascular disease. However, little is known about the cardiovascular impact of hypogonadism during development. Using hypospadias as a surrogate of hypogonadism, we investigated whether hypospadias is associated with vascular dysfunction during childhood and whether it is a risk factor for adult cardiovascular disease.Methods: Our human study spanned molecular mechan...

Background: Primary ovarian insufficiency (POI) affects 1% of women and is associated with significant medical consequences. In approximately 10% of cases, POI presents early with absent puberty or primary amenorrhoea. A genetic cause for POI can be found in up to 30% of women. Identified genes often relate to the complex biological processes occurring in fetal life which underpin normal ovary development and function in later adulthood.Objective: We aim...

Introduction: Prohormone convertases are a family of proteins that mediate the processing and activation of peptide hormones and neuropeptide precursors. Homozygous mutations of the PCSK1 gene result in prohormone convertase 1 deficiency that is characterized by diarrhea, hypoglycemia, multiple pituitary hormone deficiency beginning from neonatal period and obesity beginning after infancy.Case: A 35-day-old boy was referred to our hospit...

Background and hypothesis: Mitochondrial disorders are multisystemic conditions associated with sensorineural hearing loss, encephalomyopathy, lactic acidosis, and non-autoimmune diabetes. The majority of molecular etiologies involve mutations in the genes encoding the oxidative phosphorylation system's components. Superoxide generation is significantly increased and causes oxidative damage in the affected tissues in these disorders. The establishment of ...

Background: Oral LUM-201 normalizes growth rates in moderate PGHD over 12 months (Phase 2 Trials: OraGrowtH210/OraGrowtH212) [FC-746 ESPE 2024]. In OraGrowtH212, GH profiles, based on 10-minute sampling over 12 hours (8am-8pm), showed significant increases in inter-pulse, pulsatile and total GH secretion in response to 1.6 and 3.2 mg/kg/day doses of LUM-201 over 6 months, with no difference between the doses [FC14.3, ESPE 2023].O...

Introduction: Haematological malignancies represent the most frequent cancer in children. While there is an extensive literature on testicular function in adult survivors of childhood cancer, focused on sperm and androgen production, scarce information exists on the immediate impact in prepubertal boys.Aim: To characterise testicular function, focused on Sertoli cell biomarkers, from diagnosis up to 3 years after the end...

Objectives: Hyperphagia and severe obesity may result from impaired melanocortin-4 receptor (MC4R) signaling due to rare biallelic variants in POMC or PCSK1 (proopiomelanocortin [POMC] deficiency) or LEPR (leptin receptor [LEPR] deficiency), Bardet-Biedl syndrome (BBS) or acquired hypothalamic obesity (HO). Previously, setmelanotide in patients aged 2-17 years was well tolerated and improved weight-related measures and hunger severit...

Background: The calcium-sensing receptor (CaSR) regulates calcium metabolism by modulating PTH secretion, as well as by direct effect on osteoblasts and osteoclasts, balancing bone formation and resorption. Loss-of-function heterozygous mutations on CASR gene can lead to Familial Hypocalciuric Hypercalcemia (FHH; OMIM #145980), a benign autosomal dominant condition of undefined incidence. Dysplasia Epiphysealis Hemimelica (DEH; OMIM #127800) is a rare...

Background: Noonan Syndrome (NS; OMIM 163950) is a common autosomal dominant disorder distinguished by facial dysmorphism, short stature, heart defects, chest deformities, and learning disabilities or mental retardation. NS stems from heterozygous germline causative variants in genes regulating the RAS/MAPK signaling pathway, including PTPN11, SOS1, RAF1, RIT1, KRAS, NRAS, BRAF, LZTR1, and SOS2. The condition exhibits considerable clinical variability and shar...