hrp0092p2-292 | Thyroid | ESPE2019

Thyroid Autoimmunity in Children and Adolescents with Type 1 Diabetes Mellitus

Selveindran Nalini M , Wong SL Jeanne , Hong Janet YH , MZ Fuziah

Introduction: Type 1 diabetes mellitus (T1DM) is commonly associated with other organ – specific autoimmune disorders. Autoimmune thyroid disease (AITD) is the most common comorbid autoimmune condition in patients with T1DM. The occurrence of both T1DM and AITD is defined as Autoimmune Polyglandular Syndrome type 3 variant (APS3v). We sought to clarify thyroid autoimmunity in a cohort of Malaysian patients with T1DM.Methods<...

hrp0092p1-403 | Pituitary, Neuroendocrinology and Puberty (2) | ESPE2019

Xanthomatous Hypophysitis: A Rare Case in a Paediatric Patient

Jeanne Wong Sze Lyn , Selveindran Nalini , Hong Janet , Zain Fuziah

Background: Hypophysitis is a rare inflammatory condition of the pituitary that can mimic a neoplastic lesion. Histopathology subtypes include lymphocytic, granulomatous, xanthomatous, plasmacytic or a mixed picture. Among these, xanthomatous hypophysitis (XH) is the least common with an unknown aetiology. Unlike lymphocytic hypophysitis, which is believed to be autoimmune in origin, XH is rarely reported to be associated with other autoimmune diseases and res...

hrp0089p3-p056 | Bone, Growth Plate &amp; Mineral Metabolism P3 | ESPE2018

Response to Pamidronate Therapy and Pharmacogenetics in Patients with Osteogenesis Imperfecta

Selveindran Nalini M , Hong Janet YH , Nawawi Nadiah Mohd , Murad Nor Azian Abdul , Jamal Rahman , Latiff Zarina Abdul , Aziz Bilkis Banu Abd , Zakaria Syed Zulkifli Syed , Zain Fuziah Md , Rasat Rahmah

Introduction: Osteogenesis imperfecta (OI), is a genetically heterogeneous connective tissue disorder associated with skeletal fragility, deformity, and growth deficiency. Intravenous bisphosphonate therapy is the mainstay of medical treatment of this condition. Given the paucity of data from Asia we sought to evaluate the genetic epidemiology and the response to pamidronate therapy in a cohort of Malaysian patients.Method: Genetic analysis was performed...

hrp0086s2.1 | Genetics and epigenetics of thyroid dysgenesis | ESPE2016

Determination of Autosomal Monoallelic Expression in Thyroid Tissue Assessed by Whole-Exome and Bulk RNA Sequencing: A Role in Thyroid Dysgenesis, Autoimmunity and Cancer

Deladoey Johnny

Background and hypotheses: Congenital hypothyroidism due to thyroid dysgenesis (CHTD) is a disorder with a prevalence of one in 4,000 live births, the cause of which remains unknown. The most common diagnostic category is thyroid ectopy, which occurs in up to 80% of CHTD cases. CHTD is predominantly not inherited and has a high discordance rate (>92%) between monozygotic (MZ) twins. The sporadic nature of CHTD might be explained by somatic events such as autosomal monoalle...

hrp0092p3-165 | Growth and Syndromes (to include Turner Syndrome) | ESPE2019

Final Adult Height in a Patient with Turner Syndrome {46, X, i(Xq)} Treated with Growth Hormone for 10 Years Compared to her Normal Dizygotic Twin Sister and Mid-Parental Height

Soliman Ashraf , Hamad Noor , Alhumaidy Noora , Osman Ahmed Shayma , Adel Ashraf

Anthropometric somatotype components show significant resemblance in monozygotic (MZ) and dizygotic twins (DZ) twins within each sex with a greater resemblance within MZ twin pairs than within DZ twin pairs. In many studies a significant positive correlation was found between the parental height and the height of girls with TS.This girl with Turner syndrome {46, X, i(Xq) presented at the age of 7.5 years for evaluation of her short stature. Her clinical ...

hrp0092fc5.4 | Thyroid | ESPE2019

Thyroid Dysgenesis: Exome-Wide Analysis Identifies Rare Variants in Genes Involved in Thyroid Development and Cancer

Larrivée-Vanier Stéphanie , Jean-Louis Martineau , Magne Fabien , Bui Helen , Samuels Mark E. , Polak Michel , Van Vliet Guy , Deladoëy Johnny

Context: Congenital hypothyroidism from thyroid dysgenesis (CHTD) is mainly a sporadic and non-syndromic condition occurring in 1:4,000 live births. In contrast to rare cases of syndromic monogenic CHTD, non-syndromic (NS) CHTD shows low familial recurrence risk (~2%) and low concordance rate between MZ twins, suggesting a two-hit scenario combining post-zygotic events with either a de novo monogenic mutation or incomplete penetrance of polyg...

hrp0089fc5.2 | Thyroid | ESPE2018

Enrichment of Inherited Rare Variants in Non-Syndromic Congenital Hypothyroidism from Thyroid Dysgenesis Identified By Exome Sequencing: the Contribution of IKBKE to Vasculogenesis and Thyroid Development

Larrivee-Vanier Stephanie , Magne Fabien , Jean-Louis Martineau , Carre Aurore , Bui Helen , Samuels Mark E. , Polak Michel , Van Vliet Guy , Deladoey Johnny

Congenital hypothyroidism from thyroid dysgenesis (CHTD) is mainly a sporadic and non-syndromic condition occurring in 1:4,500 live births. In contrast to rare cases of syndromic monogenic CHTD, non-syndromic (NS) CHTD shows low familial recurrence risk (~2%) and low concordance rate between MZ twins, suggesting a two-hit scenario combining post-zygotic events with either a de novo monogenic mutation or incomplete penetrance of polygenic inherited variants,. As this l...

hrp0086p1-p224 | Diabetes P1 | ESPE2016

Space-time Environmental Associations in Childhood Type 1 Diabetes (T1D). A Case-control Geographical Approach in the ISIS-Diab Cohort

Bougneres Pierre , Le Fur Sophie , Valtat Sophie , Valleron Alain-Jacques , ISIS-Diab Network Network

Background: T1D concordance in MZ twins being ~40%, non-heritable factors play a major causal role in this autoimmune disease. T1D has recently increased in young European children. Collecting prospective environmental data in a cohort of millions children-years starting soon after birth seems unpracticable. Retrospective case-control studies are an alternative, provided biased controls and recall bias can both be avoided.Objectives: To develop a ‘v...

hrp0086p1-p247 | Diabetes P1 | ESPE2016

Which is the Best Site for Catheter Placement in Young Children with Type 1 Diabetes (T1D) and CSII?

Xatzipsalti Maria , Vakaki Marina , Patouni Konstantina , Kourti Afroditi , Mentesidou Lida , Choundala Anna , Stamoyannou Lela , Vazeou Andriani

Background: Few data exist for young children regarding the proper site for insulin catheter insertion for pump (CSII) users.Objective and hypotheses: To evaluate the proper site for catheter insertion in very young children (<8 year old) with T1D and CSII.Method: The study comprised 10 children [7 females, median age 4.43 years (range 2.3–7.18), median disease duration 1.65 years] with T1D who were on CSII. Ultrasound mea...

hrp0086p2-p266 | Diabetes P2 | ESPE2016

Gene-Environment (GxE) Interactions in Childhood Type 1 Diabetes (T1D): A Case-only Geographical Approach in the ISIS-Diab Cohort

Bougneres Pierre , Fur Sophie Le , Valtat Sophie , Lathrop Mark , Valleron Alain-Jacques , ISIS-Diab Network France

Background: T1D concordance in MZ twins being ~40%, non-heritable factors play a major causal role in this autoimmune disease. T1D has recently increased in young European children. Collecting prospective environmental data in a cohort of millions children-years starting soon after birth seems unpracticable. Retrospective case–control studies are an alternative, provided biased controls and recall bias can both be avoided.Objectives: To develop a &#...