ESPE Abstracts

Background: A total of 456 skeletal dysplasias have been classified by molecular, biochemical and/or radiological criteria, into 40 groups. Despite this, the precise, final diagnosis is often difficult due to the high phenotypic and genotypic variability.Objective: To improve the molecular and clinical diagnosis of skeletal dysplasias using a custom-designed next-generation sequencing (NGS) panel.Method: A total of 56 skeletal dysp...

Background: overexpression of the oncogene Yes-associated protein 1 (YAP1), a Hippo pathway target, associates with increased cell proliferation in some human cancers. There is not data on adrenocortical tumors (ACT). YAP1 is a potential target of Wnt/β-catenin pathway, which plays an important role in ACTs.Objective and hypotheses: to evaluate the role of YAP1 and its interaction with the Wnt/β-catenin pathway in ACT.Met...

Context: Children with 21-hydroxylase deficiency (21OHD) require chronic glucocorticoid administration to substitute glucocorticoids and suppress adrenocorticotropic hormone-induced hyperandrogenemia. There is still no evidence about the best timing of the highest hydrocortisone (HC) dose. Administration of the highest dose in the morning aims to mimic the physiological rhythm of cortisol, while a high dose late in the evening may inhibit the early-morning inc...

Background: Primary ovarian insufficiency (POI) is genetically mediated in up to 30% of cases. Many genes associated with POI have roles in early ovary developmental processes, including meiosis.Objectives: We investigated the genetic mechanism underlying early-onset POI in three young women presenting with absent puberty: two sisters from a consanguineous pedigree and a third unrelated proband.<st...

Background: Impairment of the chromatin remodeling factors ATRX and DAXX and telomeres abnormality play a role in cancer biology, influencing the clinical outcomes. However, their roles in adrenal tumorigenesis require broader investigation.Aim: To evaluate ATRX and DAXX genotype and expression, telomere length, and the alternative lengthening of telomeres (ALT), as well as their clinical significance, in primary adrenoc...

Aim: To uncover a feasible tumor expression prognostic signature and potential therapeutic targets for children with pACT.Methods: Tumor RNAseq from 53 pACT children (70% girls, median age: 1.7yrs) was performed (Illumina). Using a robust, state-of-the-art, differential gene expression analysis pipeline, differentially expressed genes (DEGs: adjusted P<0.05 and |log2 fold-change|>1) were identified (DESeq2...

Introduction: In various forms of XY disorders/differences of sex development (DSD) the risk of germ cell cancer is increased. In the 2006 DSD consensus statement this risk was estimated to be intermediate in 17beta-HSDtype3 deficiency (HSD17B3D) and low in 5alpha-reductasetype2 deficiency (SRD5A2D) but based on very few cases. Few studies have been performed since; therefore we aimed to review gonadal pathology in an international cohort with these conditions...

Background: Pediatric osteoporosis is a condition which can stem from genetic causes (Primary osteoporosis), from systemic diseases or from the chronic use of drugs that alter bone metabolism (secondary osteoporosis). Obesity affects bone health in several ways, including bone remodeling, proinflammatory cytokine production and bone marrow microenvironment alteration. We describe the case of a boy who presented spontaneous vertebral fractures.<p class="abs...

Objectives: To examine age at presentation and outcome in children diagnosed with 21-hydroxylase deficient congenital adrenal hyperplasia (21-OHD CAH) in Algeria in the absence of a national neonatal screening program.Design: Retrospective analysis of patients followed in a single centre from 2007 to 2017. The diagnosis of CAH was established on clinical and biochemical grounds ± genetic analysis.Results: Of 168 patients (114F...

Background: For many patients with high-risk cancers, allogeneic stem cell transplant (SCT) is the only curative option. A major risk of SCT is acute graft versus host disease (aGVHD). About 50% of SCT patients develop aGVHD as a part of their course. Glucocorticoids are the mainstay of therapy in aGVHD patients. Of the patients that develop aGVHD, about 50% develop a steroid refractory/resistant form. These patients tend to require higher doses of steroids and many will requi...