hrp0084fc1.5 | Adrenal | ESPE2015

Atypical Presentation of Six Patients with Mutations in the Side Chain Cleavage Enzyme CYP11A1

Chan Li , Huebner Angela , Spoudeas Helen , Cheetham Tim , Metherell Louise

Background: Mutations in the side chain cleavage enzyme, (CYP11A1) cause congenital adrenal insufficiency, with complete or partial 46XY sex reversal. The disorder manifests with adrenal and gonadal insufficiencies along with derangements of the renin/angiotensin system.Objective and hypotheses: To obtain a genetic diagnosis in six patients with adrenal insufficiency of unknown aetiology. Patients 1 and 2 are sisters with ACTH resistance, having...

hrp0082lbp-d3-1002 | (1) | ESPE2014

Pseudoexon Activation in Nicotinamide Nucleotide Transhydrogenase in Two Siblings with Familial Glucocorticoid Deficiency

Chan Li , Novoselova Tatiana , Rath Shoshana , Carpenter Karen , Atkinson H , Dickinson Jan , Pachter Nick , Price G , Choong Cathy , Metherell Lou

Background: Two siblings of non-consanguineous parents presented with FGD, demonstrated by ACTH resistance with glucocorticoid but not mineralocorticoid deficiency. The proband presented at 21 months, unresponsive with hypoglycaemia (BGL 1.5 mmol/l). Endocrine evaluation subsequent to resuscitation indicated adrenal insufficiency with elevated ACTH. Hydrocortisone therapy was commenced. A sibling, 4 years younger than the proband had a short Synacthen test (SST) performed on d...

hrp0095p1-6 | Adrenals and HPA Axis | ESPE2022

Clinical and Genetic characterization of primary adrenal insufficiency in Sudanese children

A. Musa Salwa , A. Abdullah Mohamed , S. Hassan Samar , Qamar Younus , Hall Charlotte , Maitra Saptarshi , V Maharaj Avinaash , Mariela Marroquin Ramirez Lucia , Read Jordan , Smith Christopher , F Chan Li , A Metherell Louise

Background: Primary adrenal insufficiency (PAI) in children is an uncommon condition. Diagnosis is usually challenging especially in resource limited settings where facilities for antibodies and genetic testing are constrained. Many genetic etiologies have been reported in children with PAI due to congenital adrenal hyperplasia (CAH) and Allgrove syndrome are the commonest identified genetic causes to date in Sudan. Studies from Africa are rare and here we des...

hrp0094p2-19 | Adrenals and HPA Axis | ESPE2021

Genetic analysis of paediatric primary adrenal insufficiency of unknown aetiology over 25 years

Buonocore Federica , Maharaj Avinaash , Qamar Younus , Koehler Katrin , Suntharalingham Jenifer P. , Chan Li F. , Ferraz-de-Souza Bruno , Hughes Claire R. , Lin Lin , Prasad Rathi , Allgrove Jeremy , Andrews Edward T. , Buchanan Charles R. , Cheetham Tim D. , Crowne Elizabeth C. , Davies Justin H. , Gregory John W. , Hindmarsh Peter C. , Hulse Tony , Krone Nils P. , Shah Pratik , Shaikh Mohamad G. , Roberts Catherine , Clayton Peter E. , Dattani Mehul T. , Thomas N. Simon , Huebner Angela , Clark Adrian J. , Metherell Louise A. , Achermann John C. ,

Introduction: Primary adrenal insufficiency (PAI) is a potentially life-threatening condition that requires appropriate diagnosis and treatment. The most common cause of PAI is congenital adrenal hyperplasia (CAH), but other well-established aetiologies include metabolic and autoimmune disorders, and physical damage. Mutations in more than 30 genes have now been associated with PAI, with considerable biochemical and phenotypic overlap. It is therefore importan...

hrp0097p1-378 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2023

Infant with 45, XO DSD presented with Li Fraumeni syndrome, a case report from Kuwait.

Alfadhli Maryam , Alhenaidi Razan , Elshafie Reem , Alkandari Hessa , Alhomaidah Doha

Background: X-chromosome monosomy is the most common sex abnormality in females, with a higher prevalence of cancer than the general population. Virilizing adrenocortical tumors are rarely seen in patients with Turner’s Syndrome. There have been 2 reported cases of simultaneous TP53 mutations (Li Fraumeni’s syndrome) and Turner’s syndrome. Here we report first case with this rare association from Kuwait.Clinical...

hrp0089p1-p187 | Growth & Syndromes P1 | ESPE2018

A Novel Deadly Variant in the TP53 Gene Causing Li-Fraumeni Syndrome. The Importance of Clinical Awareness and the Contribution of Molecular Diagnosis in Active Prevention Within Families with Multiple Tumor Incidents at a Young Age

Bothou Christina , Spyridis Georgios P , Papantonatos Dionysios A , Stratakis Constantine A , Papadimitriou Dimitrios T

Background: Li-Fraumeni Syndrome (LFS) is an autosomal dominant hereditary cancer syndrome associated with germline pathogenic variants in in the TP53 gene and high risk of a broad range of early-onset malignancies. The 70-77% of LFS associated tumors are: breast cancer, soft-tissue sarcoma, brain tumor, osteosarcoma and adrenocortical carcinoma. However, ovarian, pancreatic and gastrointestinal track tumors are also LFS-related. The patients with LFS are at risk for a second ...

hrp0084fc1.6 | Adrenal | ESPE2015

An Update on Noninvasive Prenatal Diagnosis of Congenital Adrenal Hyperplasia Using Cell-free Foetal DNA in Maternal Plasma

New Maria , Tong Yu , Jiang Peiyong , Pina Christian , Chan K C Allen , Khattab Ahmed , Liao Gary J W , Yau Mabel , Kim Se-Min , Chiu Rossa W K , Sun Li , Zaidi Mone , Lo Y M Dennis

Background: Congenital adrenal hyperplasia (CAH) arises from mutations in CYP21A2 gene, which encodes for the steroidogenic enzyme 21-hydroxylase. Currently employed chorionic villus sampling and amniocentesis provide genetic results at ~14 weeks of gestation at the earliest. At this time, the genitalia of the affected female foetuses have already become virilized. To prevent genital ambiguity, prenatal treatment with dexamethasone must begin on or before gestational ...

hrp0092p1-326 | Diabetes and Insulin (2) | ESPE2019

Copy Number Variation (CNV) Sequencing Identifies a Novel Mutation of the Glucokinase Gene in Maturity-Onset Diabetes of the Young

Li Yan , Li Pin

Backgrounds: Maturity-onset diabetes of the young (MODY) is a cluster of early-onset, monogenic disorders which is inherited in autosomal dominant form. It is mainly caused by genetic defects in beta-cell, which results in beta-cell dysfunction. Till now, 14 MODY types specified by mutation in respective 14 genes with their etiologies are known. Among them, glucokinase (GCK) gene encodes glucokinase enzyme which plays a crucial role in the regulation of insuli...

hrp0097lb16 | Late Breaking | ESPE2023

Associations Between Serum Levels of Thyroid Function and Per- and Polyfluoroalkyl Compounds Concentrations in Central Precocious Puberty in Girls

Li Yan , Li Pin

Background: Exposure to per- and polyfluoroalkyl substances (PFASs) may interfere with thyroid function in the general population and disturb the timing of puberty onset.Objectives: We investigated the possible relationship between PFASs and thyroid hormone (THs) exposure in girls with central precocious puberty (CPP).Methods: In a prospective study initially established for assess...

hrp0095p2-297 | Thyroid | ESPE2022

Discrimination between transient and permanent congenital hypothyroidism in patients with eutopic thyroid gland

Kim Chan Jong

Introduction: Congenital hypothyroidism (CH) is diagnosed with neonatal screening and treated early in the neonatal period. Among these patients, transient congenital hypothyroidism (TCH) is included and requires re-evaluation. In this study, we aimed to identify factors that would allow discrimination between permanent and transient hypothyroidism in patients with eutopic thyroid gland.Methods: We retrospectively analyz...