hrp0094p1-50 | Sex Endocrinology and Gonads A | ESPE2021

Pathogenic variants in the human m6A reader YTHDC2 are associated with primary ovarian insufficiency

McGlacken-Byrne Sinead M , Torres Ignacio Del Valle , Stabej Polona Le Quesne , Belutti Laura , Ocaka Louise , Ishida Miho , Suntharalingham Jenifer P , Genomics UCL , Discovery GOSgene , Resource Human Developmental Biology , Dattani Mehul T , Kelberman Dan , Lagos Carlos F , Livera Gabriel , Conway Gerard S , Achermann John C ,

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...

hrp0082p2-d3-617 | Turner Syndrome | ESPE2014

Early Occurrence of Gonadoblastoma Found at Elective Gonadectomy in Turner Syndrome Mosaic for Y Chromosome

MacMahon J , Morrissey R , McDermott M , O'Sullivan M , Quinn F , Green A , Lynch S A , O'Connell S M

Background: Turner syndrome (TS) is one of the most common genetic disorders in females and occurs in phenotypic females who are missing all or part of one sex chromosome. While the most common mosaic forms of the disorder are 45,X/46,XX and 45,X/46,Xiq, mosaicism for cells containing Y chromosome material is well documented.Objective and hypotheses: Owing to increased risk of gonadoblastoma (GB), current recommendations are for elective gonadectomy foll...

hrp0082p3-d1-671 | Bone | ESPE2014

A Challenging Diagnosis of Pseudohypoparathyroidism Type 1a and Practical Management: a Case Report

Grace M L , O'Riordan S , O'Connell S M , Bogue C , Joyce C , Allgrove J

Background: PHP is a rare heterogeneous genetic disorder causing parathyroid hormone (PTH) resistance. This condition is caused by deficiency of the α subunit of the protein Gs, encoded by GNAS gene. Clinical classification is based on presence or absence of Albright hereditary osteodystrophy (AHO) and multiple or single hormone resistance, to PHP1a/1c and PHP1b respectively.Objective: To describe the clinical and practical management of a case of P...

hrp0082p3-d1-632 | Adrenals &amp; HP Axis | ESPE2014

Secondary Pseudohypoaldosteronism Type 1: the Role of a Urinary Steroid Profile

Grace M L , Murray D M , Joyce C , Taylor N F , Ghataore L , O'Connell S M

Background: Secondary pseudohypoaldosteronism (PHA) type 1 is an uncommon salt losing condition of infancy caused by transient resistance of the mineralocorticoid receptors (MR) of the renal tubule to aldosterone. This can be secondary to urinary tract infection (UTI), urinary tract malformation (UTM) or obstructive uropathy. Ninety percent of reported cases present before 3 months and nearly all are under 7 months of age.Objective and hypotheses: The co...

hrp0082fc8.6 | Fat Metabolism | ESPE2014

A Novel Missense Variant in the Insulin Receptor Gene in Three Unrelated Irish Families with Severe Insulin Resistance Syndrome: Evidence for an Irish Founder Effect

Mavinkurve M , O'Connell S , Cody D , Isaac I , Harris J , Semple R K , Mc Donnell C

Background: Genetic defects in the insulin receptor (INSR) are rare. Precise prevalence is unknown and significant clinical heterogeneity exists. Over 120 allelic variants have been described to date, spread throughout the receptor, and few geographical founder effects have been described. In this case series we identify a novel missense mutation in the tyrosine kinase domain of the INSR in three independently ascertained Irish families.Objective and Hyp...

hrp0094p2-442 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2021

Persistent Müllerian duct syndrome presenting with bilateral cryptorchidism and obstructed inguinal hernia

Vlachopapadopoulou Elpis-Athina , Fotiadou Anatoli , Picard Jean-Yves , Achilleos Orthodoxos , Lamprinou Zoe , Tzortzopoulou Adelais , Passalidis Alexandros , Michalacos Stephanos

Background: Persistent Müllerian duct syndrome (PMDS) is a Disorder of Sex Development (DSD) caused by mutations in genes encoding anti-Müllerian hormone (AMH) or its type II receptor (AMHR2) with autosomal recessive transmission. Objective: To report a case of transverse testicular ectopia (TTE), associated with PMDS, initially presented as an obstructed inguinal hernia.Case presentation: An 18- days- old male infant, wi...

hrp0082p2-d1-512 | Pituitary | ESPE2014

Clinical Phenotype and Complications, Endocrinopathies and Neuroimaging Findings in a Case Series of Sod

Maris I , Howard C , Bogue C , Morrissey R , Gregory L C , O'Connell S M , Dattani M T , O'Riordan S M P

Background: Septo-optic dysplasia (SOD) is a highly heterogeneous condition with a variable phenotype, defined as two or more features of the classical triad: i) optic nerve hypoplasia, ii) midline brain defects, and iii) pituitary hormone abnormalities.Objective and hypotheses: To describe the clinical, endocrine, and neuroimaging features in eight children with SOD.Method: Eight (six males) consecutive patients, diagnosed with SO...

hrp0092p1-235 | Growth and Syndromes (to include Turner Syndrome) (1) | ESPE2019

Development of a Measure for the Impacts of Achondroplasia on Children's Daily Functioning and Well-Being

Pfeiffer Kathryn M. , Brod Meryl , Viuff Dorthe , Ota Sho , Gianettoni Jill , Leff Jonathan

Background: Research on the impacts of achondroplasia on children's functioning and well-being is limited. The purpose of the study was to investigate the impacts of achondroplasia on children's daily lives to support the development of an impact measure of achondroplasia on children's functioning and well-being.Methods: Individual telephone interviews and one parent focus group were conducted in the United S...

hrp0094p2-391 | Pituitary, neuroendocrinology and puberty | ESPE2021

Cushing’s disease in paediatric patients: Diagnosis and evolution

Messaoudi Najoua , Assarrar Imane , Bouichrat Nisrine , Karrou Marouan , Rouf Siham , Latrech Hanane ,

Introduction: Cushing’s syndrome is rare in the paediatric population, affecting 0.89 per million children between the ages of 0 and 20 years. The causes of Cushing’s syndrome of endogenous origin are dominated by pituitary causes in 70-95%, with a peripubertal revelation. We report the case of a child followed for Cushing’s disease in the department of Endocrinology-Diabetology-Nutrition of Mohammed-VI University Hospital Center of Oujda, in th...

hrp0092fc1.5 | Diabetes and Insulin Session 1 | ESPE2019

FADES: A Birth Cohort to Understand the Mechanisms Underlying Accelerated Onset of Autoimmunity in Children with Down's Syndrome

Williams Georgina , Mortimer Georgina L. , Leary Sam D. , Williams Alistair J.K. , Gillespie Kathleen M. , Hamilton - Shield Julian P.

Background and Aims: Children with Down's syndrome (DS) are at increased risk of autoimmune conditions including type 1 diabetes (T1D), coeliac and thyroid disease. We previously examined the clinical and immunogenetic characteristics of these conditions in children with DS. An earlier age-of-onset of diabetes was observed compared with children with T1D from the general population despite having decreased frequencies of the established genetic susceptibil...