ESPE Abstracts

Background: The genetic etiology of non-syndromic HI remains unknown in over 20% of all cases, and over 50% of diazoxide-responsive cases. Non-coding variants in HK1 have been suggested to cause HI by linkage-analysis (Pinney et al., 2008). More recently, variants within a regulatory region of HK1 intron 2 were reported in 17 individuals with HI (Wakeling et al., 2022). These variants have been proposed to cause HI by disrup...

Background: Kenny–Caffey syndrome 2 (KCS 2) is a rare cause of hypoparathyroidism, characterized by proportionate short stature, cortical thickening and medullary stenosis of tubular long bones, delayed closure of anterior fontanel and eye abnormalities.Objective: We report the case of a 4-years’-old boy, who presented with the characteristic, and newly identified clinical, biochemical, radiological and genet...

Background: It is critical to understand patient-reported outcomes in pediatric patients enrolled in pediatric weight management (PWM) clinics. Health-related quality of life (HRQoL) is low in children with obesity. Utilizing data from the CANadian Pediatric Weight Management Registry (CANPWR), we examined (1) changes in HRQoL up to 3 years after enrollment in PWM and (2) factors associated with change in HRQoL over time.Methods:...

Background: Congenital hyperinsulinism (CHI) is a rare disease affecting neonates, infants, and children caused by dysregulated insulin secretion resulting in severe recurrent hypoglycemia. Early treatment is necessary to limit the risk of neurologic and developmental sequelae. Dasiglucagon is a glucagon analog (stable liquid formulation) suitable for continuous subcutaneous infusion shown to raise blood glucose in a dose-dependent manner. Result...

Background: Achondroplasia (ACH) is an autosomal dominant condition, resulting from pathogenic missense FGFR3 (fibroblast-growth-factor receptor-3) variants. Foramen magnum stenosis (FMS) is a severe complication, with infants and younger children being at higher risk. FMS may be asymptomatic or cause cervical-medullary compression (CMC), presenting with hydrocephalus, hypotonia or hypertonia, central sleep apnea and sudden death. The scope of the stu...

Introduction: X-linked adrenoleukodystrophy (X-ALD) is a cause of primary adrenocortical insufficiency. It is associated with accumulation of very long chain fatty acids (VLCFA), due to peroxisome dysfunction. X-ALD is caused by pathogenic variants of the ABCD1, which encodes an ATP-binding cassette transport protein, and is inherited in X-linked recessive mode. There is no known genotype-phenotype correlation, and the degree of VLCFA elevation does n...

Background: Congenital hyperinsulinism (CHI) is a rare disease affecting neonates, infants, and children. CHI is characterized by dysregulated insulin secretion resulting in severe recurrent hypoglycemia. Early treatment is necessary to limit the risk of neurologic and developmental sequelae. Current treatment options are limited and inadequate. Dasiglucagon (DASI) is a glucagon analog suitable for continuous subcutaneous infusion which has been shown to raise...

Objectives: No validated achondroplasia (ACH)-specific patient reported outcome (PRO) or clinician-reported outcome (ClinRO) measures are available. A detailed review of generic PRO and ClinRO measures was performed to select relevant tools for further evaluation in a qualitative study.Methods: Published literature describing medical challenges and impacts among children with ACH was reviewed to identify important concep...

The phenotype in male individuals with a mosaic sex chromosomal abnormality is heterogenous, but ambiguous genitalia, delayed puberty, disturbed spermatogenesis, and short stature are frequently seen. Genetic investigation in boys with idiopathic/isolated short stature usually includes SHOX gene analysis (sequencing and copy number detection by MLPA), genome wide array analysis, and/or whole exome sequencing (WES). In the Netherlands, conventional karyotyping is not part of th...

Introduction: Recent studies point to the existence of androgen-responsive non-coding (nc) RNAs in peripheral blood mononuclear cells (PBMC) RNA.Aim: To quantify the androgen-responsive gene expression of SNORD5 and RNY5 and investigate their relationship to the testosterone (T) rise following hCG stimulation in boys with no genetic evidence of androgen insensitivity.Methods: 19 bo...