ESPE Abstracts

Purpose: Multiple Endocrine Neoplasia type 2 (MEN2) affects patients with RET proto-oncogene mutations. This cohort study refer to patients who were diagnosed with familial medullary thyroid carcinoma (MTC) and underwent RET genetic testing in Cyprus between years 2002 and 2017.Methods and Patients: Forty patients underwent RET testing by Sanger sequencing of exons 10–11 and 13–16. Genotyping with STR genetic markers ...

Introduction: Obesity and the metabolic syndrome (MetS) are linked to increased risk for endothelial dysfunction which is considered as the first step in the progression of cardiovascular disease. Fibroblast growth factor 21 (FGF21) is a protein with known effects on various metabolic pathways. In adults, the circulating blood levels of FGF21 have been associated with parameters of lipid/carbohydrate metabolism, and FGF21 is known to be increased in obesity. T...

Background: Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (21-OHD) is worldwide the most common autosomal recessive disorder caused by defects in the CYP21A2 gene.Objective: The main objective of the study was to evaluate CAH in Cyprus over a 10 year period.Methods: All known patients were included in a population retrospective subset analysis of Cypriot patients with confirmed CAH and their clinica...

Background: Resistance to thyroid hormone (RTH) is a dominantly inherited rare disorder (1:40000) mainly due to mutations in the THRB gene that lead to a decreased end-organ responsiveness to thyroid hormone. Clinical and molecular characteristics of four patients with RTH are described.Patients and methods: Four patients from three non-related families were studied; two boys (8.3 and 9.2 years old) and 2 adults (35 year old male and 27 year old...

Background: Central precocious puberty (CPP) due to premature activation of GnRH secretion results in early epiphyseal fusion and to a significant compromise in the achieved final adult height as well as psychological consequences. So far only a limited number of genetic determinants have been associated with the pathogenesis in children with CPP. In this original research, rare sequence variants in MKRN3, DLK1, KISS1, and KISS1R genes were i...

Background: Glucocorticoids regulate a broad spectrum of physiologic functions essential for life and exert their actions through their ubiquitously expressed glucocorticoid receptor (GR). The GR interacts with several molecules, including the non-coding RNA growth arrest-specific 5 (Gas5), which decreases the transcriptional activity of the GR by preventing its binding to DNA, and reduces tissue sensitivity to glucocorticoids.Objective and Hypotheses: T...

Background: Nutrient deprivation during early development has been associated with the predisposition to metabolic disorders in numerous epidemiological studies. Experiments with rodents also indicate a developmental plasticity of neuropsychological characteristics following alterations of early postnatal nutrition.Objective: Considering its interaction with metabolism and regulation of appetite and behavior, the endocannabinoid system (ECS) may represen...

Background: P450 oxidoreductase (POR) mutations can present with disordered sexual development (46,XX virilisation as well as 46,XY under-masculinisation), perturbed steroidogenesis and mild to severe skeletal malformations. As POR is an obligate electron donating cofactor to many P450s, and as this interaction may vary from partner to partner, the phenotypic spectrum of PORD is extremely broad. Therefore, to characterize novel POR mutations, specific testing is required.<...

Background: Cytochrome P450 oxidoreductase (POR) deficiency (PORD) is a form of congenital adrenal hyperplasia (CAH) and results in steroid-production loss from cytochrome P450 proteins. Mutations in POR cause mild to severe forms of CAH with/without bone malformation symptoms resembling Antley-Bixler syndrome. We report a novel POR Arg550Trp mutation identified in a 46,XX patient with signs of aromatase (ARO) deficiency. Child (first pregnancy) and mother pr...