ESPE Abstracts

Abnormal DNA methylation contributes to tumor progression and is emerging as a prognostic marker in several types of cancers. To investigate whether DNA methylation is associated with pediatric adrenocortical tumor (pACT) presentation and patient prognosis, we analyzed the methylation profile of 57 tumors (MethylationEPIC BeadChip Array-Illumina) and patients’ clinicopathological features and outcome. The study comprehended 40 girls and 17 boys, with median age at diagnos...

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: Infantile Arterial Calcification (IAC) is a rare and frequently lethal condition. Children who survive the infantile period may develop fibroblast growth factor 23 (FGF23) mediated hypophosphatemia and rickets when IAC is due to mutations in the ENPP1 gene.Case: We present a female patient born to a family whose previous child died at birth with extensive vascular calcifications. Akin to the first sibling, our case presented with e...

Background: The transcription factor Gli-similar 3 (Glis3) is predominantly expressed in the pancreas and it has a critical role in the development of insulin producing β-cells, thyroid and kidney. Mutations in GLIS3 is a rare cause of neonatal diabetes associated with congenital hypothyroidism, congenital glaucoma and polycystic kidney. We report a new case from consanguineous parents with homozygous novel mutation in GLIS3 gene.<p class="abstext"...

Introduction: In pediatric years, the most common cause of primary adrenal insufficiency is congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency. Current Endocrine Society guidelines advocate for the use of perioperative supraphysiologic (often referred to as ‘stress dose’) glucocorticoids for children with primary adrenal insufficiency undergoing general anesthesia or surgery. We perceived a difference in practice patterns amongst pediatric subspeci...

Background: Wolcott-Rallison syndrome (WRS) is a rare, autosomal recessive disease and characterized by early-onset diabetes, spondyloepiphyseal dysplasia, short stature, osteopenia, acute liver failure, and neurological deficit. It results from mutation in a gene of the eukaryotic translation initiation factor 2-α kinase 3 (EIF2AK3).Objective and hypotheses: We report two WRS patients diagnosed in infantile period.Me...

Background: Women with Turner syndrome (TS) are known to be at risk of osteoporosis and fracture. While childhood GH treatment is common in TS, the impact of this therapy on bone health has been poorly understood.Objective: The purpose of this study was to determine the effect of childhood GH-treatment on adult bone quality in TS women using dual X-ray absorptiometry (DXA) and high resolution peripheral quantitative computed tomography (HR-pQCT).<p c...

Introduction: Differentiation of the external genitalia depends on serum androgen concentrations in the foetal life. The classic form of Congenital Adrenal Hyperplasia due to 21-hydroxylase deficiency (21OHD) is the most frequent cause of female genital ambiguity. It is an autosomal recessive disorder due to CYP21A2 mutations that are classified in groups based on their in vitro residual enzymatic activity. The phenotype usually is predicted by the less severe mutatio...

Steroidogenic factor-1 (SF1), encoded by plays a central role in sex development, steroidogenesis, and reproduction in both males and females. NR5A1 mutations have been described in a diverse spectrum of disorders of sex development (DSD). We report on a case of XY Partial Gonadal Dysgenesis with paternal inheritance of a NR5A1 variant. A 17-year-old girl was referred to us due to primary amenorrhea and absence of secondary female sex characteristics. She was...