ESPE Abstracts

Background: Leydig Cell Hypoplasia (LCH) is a very rare autosomal recessive condition that is manifested by a wide spectrum of phenotypes, ranging from completely female external genitalia to male genitalia. Long-term outcome in these patients is unclear.Objectives: To assess sex assignment, clinical characteristics and long-term outcome of 46,XY LCH cases.Patients and Methods: Thr...

Background: Disorders of sex development (DSD) due to mutations in the NR5A1 (SF1) gene result in a highly variable phenotype.Objective: To report the clinical phenotype and the molecular/structural characteristics of the gene-protein product arising from three novel mutations of the NR5A1 (SF1) gene found in patients presenting with 46,XY DSD.Method: Phenotype determined from interrogation of clinical case notes. Interpre...

Background: Complete androgen insensitivity syndrome (CAIS) is an X-linked recessive disorder of sex development (DSD) where affected individuals are phenotypically female but have a XY karyotype and testes. With increasing age there is an increased risk of malignant gonadal change, with incidence rates variously reported from 3.6 to 14%. Consequently, gonadectomy is recommended either during childhood or after puberty is complete, although there is no consensus on the optimal...

Background/Aims: 46,XY gonadal dysgenesis (GD) is classified as complete (CGD) or partial (PGD) depending on gonadal morphology and function. In contrast to the typical female external genitalia in CGD, the phenotype of PGD is variable depending on androgen production. A diagnosis of PGD is based on clinical/biochemical features, gonadal histology and genetic findings. The aim of this study is to characterise these features, particularly histological, in a lar...

Introduction: In adolescents and men with PAIS, gynaecomastia has been reported in the majority but its management remains challenging.Objectives: To assess the current management of gynaecomastia as well as clinical characteristics in male PAIS.Materials and Methods: Retrospective review in the I-DSD registry of 46, XY male PAIS who were over the age of 10 years.<p class="abst...

Background: 45,X/46,XY mosaicism is a rare karyotype with a broad phenotypic variation. In patients with a male or predominantly male phenotype, impaired genital development and statural growth have been observed, but little is known about long-term outcomes. Larger multicenter studies are needed.Objective and hypotheses: The aim of this study is to investigate long-term outcomes, namely gonadal function, growth and co-morbidities, in a larger group of m...

Background: The basic subset of T cells playing a major role in the pathogenesis of Hashimoto’s thyroiditis are CD8+T cells. The mechanism of disease initiation is dysfunction of natural Tregs leading to breakdown of the self-tolerance. The best known subset of natural Tregs are CD4+Foxp3+T, but CD8+T cells expressing CD122 were also recognized as functional Treg cells.Objective and hypotheses: The aimof the study was to evaluate the contribution of...

Introduction: Autoimmune thyroid diseases are multifactorial diseases with a genetic susceptibility and environmental factors. A potential role of the Fas apoptotic inhibitory molecule 2 (FAIM2) gene, the high-affinity alpha subunit (CD25) of the interleukin-2 receptor (IL-2RA) gene, the cytotoxic T cell antigen 4 (CTLA-4) gene polymorphisms on autoimmune thyroid diseases (AITDs) in children has not been established equivocally yet.Objective: To estimate...

Background: Autoimmune thyroid diseases are multifactorial diseases with a genetic susceptibility and environmental factors. A potential role of cytotoxic T-lymphocyte-associated protein 4 (CTLA4) gene, Fc receptor-like 3 (FCRL3) gene, Fas apoptotic inhibitory molecule 2 (FAIM2) gene polymorphisms on autoimmune thyroid diseases (AITDs) in children has not been established equivocally yet.Objective and hypotheses: To estimate the association of polymorphi...

Introduction: The reported occurrence and management of acute adrenal insufficiency (AI) – related adverse events (AE) vary widely between centres and may depend on available resources.Aim: To use the data within the I-CAH Registry to understand the association between the occurrence and management of AI related AE, their management and the availability of local resources.Methods:</st...