hrp0094fc9.5 | Growth Hormone and IGFs | ESPE2021

Dynamic Changes in Growth and IGF-I During the First Year of Life; A Longitudinal Study of 233 healthy Danish Infants

Upners Emmie N. , Ljubicic Marie L , Busch Alexander S , Fischer Margit B , Almstrup Kristian , Petersen Jorgen H , Jensen Rikke B , Hagen Casper P , Juul Anders ,

Background: Growth during infancy is a continuation of the rapid fetal growth and its regulation is complex and multifactorial. It is well-established that insulin-like growth factor-I (IGF-I) and its regulators (e.g. IGF binding proteins (IGFBP-3) and pregnancy-associated plasma protein-A2 (PAPP-A2)) are important for prenatal and postnatal growth; however, their significance for growth during infancy is not fully explored.Aims: The aim...

hrp0094p1-3 | Adrenal A | ESPE2021

Growth-Related Characteristics of Patients <18 Years of Age with Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (21OHD): Real-World Evidence from the I-CAH Registry

Farrar Mallory , He Wei , Ali Salma R , Bryce Jillian , Lawrence Neil , Baronio Federico , Claahsen-van der Grinten Hedi L. , Bonfig Walter , Krone Nils , Yonan Chuck , Ahmed S. Faisal ,

Background: Classic congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is a rare autosomal recessive condition characterized by cortisol deficiency and elevated ACTH secretion, resulting in excess androgen production. This exposure to excess androgens contributes to advanced skeletal maturation and reduced growth in puberty. Data from the I-CAH registry were analyzed to identify growth-related characteristics of children and adolescents with...

hrp0094p2-396 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2021

Combining big data science with clinics: Novel approach for understanding human sex development and its variants.

Rodriguez Gutierrez Daniel , Sproll Patrick , Von der Decken Isabel , Stevenson Brian , Lang-Muritano Mariarosaria , Konrad Daniel , L’Allemand Dagmar , Nef Serge , Biason-Lauber Anna ,

Background/Introduction: Whole exome sequencing (WES) revolutionized clinical genetics in patients with differences of sex development (DSD). However, our ability to interpret WES data is limited by our incomplete understanding of the mechanisms involved in DSD. Thus, we created a methodology that scores potential candidates based on single cells transcriptomics of human male gonadal cells and applied it to WES data from a cohort of genetically male (46,XY) DS...

hrp0094p2-398 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2021

Evaluation of genomic copy number variations in the etiology of syndromic patients with diferences of sex development (DSD)

Antonio Diniz Faria Junior Jose , R. Moraes Daniela , L. Batista Rafael , Gomes Lisboa Natalia , D. Kulikowski Leslie , Y Nishi Miriam , B Mendonca Berenice , Domenice Sorahia ,

Differences of sex development (DSD) occurs when the development of chromosomal sex, gonadal or internal/external genitalia is atypical. It has an incidence of 1: 1000-4500 live born children. New chromosomal array technologies (SNP-array) can analyze the genome of the individual providing information of copy number variation (CNV) of specific chromosomal regions helping to identified pathogenic variants that could explain the etiology of the DSD. This study aims to analyze th...

hrp0094p2-453 | Thyroid | ESPE2021

Kinetics of FT4 serum concentrations in newborns and infants with congenital hypothyroidism during follow-up differ in the three severity groups

Steffens Britta , Gächter Pascal , Koch Gilbert , l'Allemand Dagmar , Janner Marco , Konrad Daniel , Welzel Tatjana , Pfister Marc , Szinnai Gabor

Background: The goal of congenital hypothyroidism (CH) treatment is rapid normalization and maintenance of TSH and FT4 in the reference range. Recommended starting dose of levothyroxine (LT4) ranges from 10-15 mg/kg/d. Hyperthyroxinemia can be accepted in the context of normal TSH and LT4 should only be reduced in case of symptoms or repeatedly increased FT4. The aim of this study was to quantify duration and maximum peak of FT4 levels outside the reference range for each CH s...

hrp0094p2-180 | Fat, metabolism and obesity | ESPE2021

Impact of the COVID-19 pandemic and related lockdown measures on lifestyle behaviours and quality of life in children and adolescents with severe obesity

Welling MS , Abawi O , van den Eynde E , van Rossum EFC , Halberstadt J , Brandsma AE , Kleinendorst L , van den Akker ELT , van der Voorn B ,

Introduction: Lockdown measures following the COVID-19 pandemic are shown to have greatly affected lifestyle behaviours and health-related quality of life (HRQoL) of children. The impact on children with severe obesity has not yet been described. Aim of this study was to investigate the impact of COVID-19 lockdown on eating behaviours, physical activity (PA), screen time, and HRQoL of children (including adolescents) with severe obesity....

hrp0094p2-287 | Growth and syndromes (to include Turner syndrome) | ESPE2021

Novel LZTR1 mutations in subjects with features of Noonan Syndrome and GH insensitivity negatively regulate GH-induced IGF-I production and hyperactivate GH-induced ERK1/2 activation in response to GH in vitro

Chatterjee Sumana , Romeo Bertola Debora , Agwu Chizo , Maharaj Avinaash , Williams Jack , Cottrell Emily , Shapiro Lucy , Andrews Afiya , Savage Martin O. , Gaston-Massuet Carles , Metherell Louise A. , Storr Helen L. ,

Background: Noonan Syndrome (NS) can overlap clinically and biochemically with growth hormone insensitivity [GHI; short stature (SS), low IGF-I and normal/elevated GH levels]. Mutations in multiple genes regulating RAS/MAPK pathway have been identified in NS including LZTR1 variants. Function of LZTR1 is poorly understood and its role in growth retardation is unknown.Objectives: To functionally characte...

hrp0095ha1 | Development of Anorexigenic and Glucoregulatory Chimeric Peptides | ESPE2022

Development of Anorexigenic and Glucoregulatory Chimeric Peptides

Roth Christian , Salameh Therese , Kamat Varun , Milliken Brandon , Doyle Robert , Chichura Kylie S. , Sweet Ian , Carmen L. De Cunto , Elfers Clinton

Designing monomeric dual or triple agonists based on glucagon-like peptide (GLP)-1 with glucagon, and/or glucose-dependent insulinotropic polypeptide (GIP) are promising novel approaches for anti-obesity drugs tackling different weight-regulatory pathways, albeit such developments continue to suffer from significant gastrointestinal illnesses. Our own studies have focused instead on the combination of GLP-1 receptor agonists (GLP-1RAs) with neuropeptide Y1- and Y2-receptor (Y1...

hrp0095rfc4.5 | Fat, Metabolism and Obesity | ESPE2022

Cerebral perfusion following childhood-onset craniopharyngioma and the relationship with metabolic rate

Elsworth Rebecca L. , Naeem Nimra , Hawton Katherine , Narayan Kruthika , Elson Ruth , Taylor-Miller Tashunka , Lithander Fiona E. , Hamilton-Shield Julian P. , Crowne Elizabeth C. , Hinton Elanor C.

Background: Craniopharyngioma is a non-malignant embryonic tumour in the pituitary-hypothalamic area, associated with hypothalamic obesity. Dysfunctional parasympathetic nervous system activity has been proposed as one mechanism underlying alterations in energy metabolism. Arterial spin labelling (ASL) is a non-invasive MRI technique that quantifies brain tissue perfusion as a proxy for functional activity. Here, we measure cerebral perfusion in patients with ...

hrp0095p1-110 | Growth and Syndromes | ESPE2022

Characterisation of the first heterozygous missense HMGA2 variant helps delineate the crucial functional roles of a novel growth gene

Cottrell Emily , V. Maharaj Avinaash , Triggs-Raine Barbara , Thanasupawat Thatchawan , Williams Jack , Fujimoto Masanobu , A. Metherell Louise , Hwa Vivian , Klonisch Thomas , Hombach-Klonisch Sabine , L. Storr Helen

Background: Silver Russell syndrome (SRS) is genetically heterogenous and around 30% of patients with clinical SRS have no genetic diagnosis. Mutations in HMGA2 have recently been identified causing growth failure and an SRS-like phenotype. Despite strong evidence of the crucial role of HMGA2 in growth across species, the mechanism of action of HMGA2 in human linear growth is unclear.Objective:...