ESPE Abstracts

Background: Cardiometabolic (CM) risk is linked to being small for gestational age (SGA, birthweight <-2SDS). Fetal growth restriction (FGR) may not result in SGA. We focused on potential CM risk in children born following pregnancies at higher risk for FGR.Aims: To identify associations between fetal and childhood weight trajectory quartiles and CM risk markers. 2.To define molecular pathways potentially associated w...

Background: Children born SGA are known to develop cardiometabolic conditions in adulthood1. Nothing is known about the relationship of the transcriptome (gene expression) and epigenome (DNA methylation) to birth size and the future development of cardiometabolic disease.Aim: To identify, I) differences and functional links between epigenome age-7years, transcriptome age-9years associated and ...

Background: Current data from genome wide association studies (GWAS) explains 24.6% of the variation in adult height from 3290 single nucleotide polymorphisms (SNPs)1. Data on the genetic control of growth velocity during childhood is more limited and no previous studies have linked childhood growth to changes in the transcriptome (gene expression) or epigenome (DNA methylation). Here we present a systems biology approach to understand mid-child...

Background: Permanent adrenal insufficiency (AI) is an uncommon but potentially life-threatening condition in children. Patients are at particular risk during times of stress. Thus, caregivers should have good illness management skills. Despite frequent teaching and seemingly good knowledge of illness management we still see a reluctance of caregivers to administer intramuscular (IM) hydrocortisone at home when indicated, preferring instead to drive themselves...

Background: CYP27B1 converts 25-hydroxyvitamin D3 to active 1,25-dihydroxyvitamin D3, playing a vital role in calcium homeostasis and bone growth. Vitamin D-dependent rickets type 1 (VDDR-1) is a rare autosomal recessive disorder caused by mutations in CYP27B1.Objective and hypotheses: Enzymatic and structural analysis of mutations in a patient with calcipenic rickets.Method: Two siblings presented with calcip...

Background: Beckwith-Wiedemann Syndrome (BWS) is a rare overgrowth disorder secondary to various mutations in growth-regulatory genes on chromosome 11p15.5. A well-established association exists between BWS and both benign and malignant tumours, most commonly Wilms’ tumour and hepatoblastoma. We present a less frequently described diagnosis of bilateral phaeochromocytoma in association with BWS.Case report: We report the case of a 14-year-old girl w...

Background: Survivors of childhood brain tumors (SCBT) are an emerging group that have premature mortality and morbidities that can negatively impact their quality of life and lifespan. Cardiovascular disease, obesity and diabetes are important causes of premature mortality in survivors, yet one of the major determinants of cardiometabolic risk i.e. visceral adiposity has not been determined in this group.Objective and hypotheses: This study is comparing...

Background: The phases of human growth are associated with gene expression (GE) changes1, raising the possibility that rhythmic patterns of GE occur throughout childhood.Objective: In this study, we have assessed time-series patterns of GE profiles associated with age to characterise oscillations.Methods: GE analysis was conducted on cells of lymphoid origin from normal individuals through childhood (n=87, 43 ma...

Background: GH response is influenced by genetic polymorphisms, including the rs1024531 polymorphism (A/G) in the promoter region of GRB10, a negative regulator of signaling through the IGF1 receptor. Allele A is associated with borderline lower baseline IGF1 SDS and 1.5-fold higher response to GH compared to allele G in children with GHD (P=0.0006).Objective: To test functional impact of the rs1024531 polymorphism in an in vitro</e...

Background: Bone marrow transplantation (BMT) is known to affect endocrine function, most commonly causing primary hypothyroidism and hypogonadism in children. Newer reduced intensity conditioning (RIC) uses less myeloablative chemotherapy and no irradiation. Our study goal was to evaluate endocrine effects at 1 year post BMT in pediatric patients who received RIC.Methods: Retrospective, IRB-approved chart review was performed on 121 patients (44 females...