ESPE Abstracts

Introduction: Following the onset of the COVID-19 pandemic in early spring 2020, there was a need to identify the burden of this infection on people with rare endocrine conditions. The European Registries For Rare Endocrine Conditions (EuRRECa) was launched in 2018 in collaboration with Endo-ERN, ESPE and ESE to support the needs of the wider endocrine community. The project consists of an e-reporting (e-REC) platform that allows monthly reporting of new clini...

Background: Osteoporosis pseudoglioma syndrome (OPPG) characterized by congenital or early onset blindness with severe juvenile onset osteoporosis. OPPG is a rare autosomal recessive disorder due to loss of function mutation in the low-density lipoprotein receptor like protein 5 (LRP5).Methods: Two patients (siblings) underwent clinical examination, including a complete ophthalmic evaluation. Diagnosis of OPPG was based ...

Background: Idiopathic central precocious puberty (ICPP) results from the premature reactivation of the hypothalamic-pituitary-gonadal axis leading to development of secondary sexual characteristics prior to 8 years in girls or 9 years in boys. Mutations in the maternally imprinted MKNR3 gene are the most common identified genetic cause of ICPP to date. Expression of MKRN3 in the arcuate nucleus is presumed to be inhibitory to GnRH secretion, but the exact mechanism remains un...

Introduction: The leptin-melanocortin pathway plays a key-role in weight control. Pathogenic variants in the five major genes (LEP, LEPR, POMC, PCSK1, MC4R) are associated with early severe obesity. However, the specific associated phenotype with presence of mono-allelic variants and especially BMI trajectories are not well known.Objective: In order to identify specific profiles, we compared BMI trajectories during the f...

Background: Mutations in the X-chromosomal androgen receptor (AR) gene, rendering the AR protein completely or partially inactive, cause complete or partial (PAIS) androgen insensitivity syndrome.Case report: The proband was born at term following uneventful pregnancy. His phallus length was 28 mm, he had palpable gonads in the lower portion of the inguinal canal, and he had a severe penoscrotal hypospadia. His karyotype was 46,XY, and molecular...

Background: Hereditary hypophosphatemic rickets (HHR) is a rare genetic disease characterized by renal phosphate wasting, caused by elevated circulating FGF23. Despite the current available treatment complications include short stature, hyperparathyroidism, pseudofractures, bone pain, bone demineralization and osteoporosis, nephrocalcinosis and enthesopathies. Elevated circulating FGF23 was recently involved in glucose metabolism and cardiovascular function.<p class="abste...

Background: Overweight as a predictor of adverse cardiovascular outcome is of particular interest in gender-affirming healthcare. Transgender populations are at a higher risk for obesity, possibly due to a combination of minority stress, psychiatric comorbidity, and lifestyle differences, such as reluctance to participate in group sports as a consequence of social withdrawal. However, robust auxological data in transgender adolescents is scarce.<p class="a...

Background: Delayed puberty (DP) is generally considered a benign condition. We investigated the diagnoses underlying DP and its outcome predictors.Objective: A retrospective chart review which included clinical and biochemical data of 174 boys and 70 girls evaluated for DP in a single tertiary care center between 2004 and 2014.Results: Thirty etiologies that underlie DP were identified. No markers of clinical value could be identi...

Background: Previous studies have indicated that taller individuals have a higher risk of developing different types of cancer, including breast cancer and melanoma.Objective and hypotheses: Our goal was to study any association between height and the risk of cancer in general-, and breast cancer and melanoma specifically in a very large cohort composed of most Swedish women and men followed over a long period of time.Method: We ha...

Background: Gonadotropin releasing hormone (GnRH)-secretion is not only regulated by neuronal factors but also by astroglia cells via growth factors (transforming growth factor α (TGFα), neuregulin (NRG)), prostaglandin E2 (PGE2) and the erbB receptor family. Mutations of TGFα and erbB1 result in an impaired reproductive capacity. Mice show a characteristically skin phenotype with wavy hair and curly whiskers. The rat strain SPRD-Cu3 (curly) shows a sim...