ESPE Abstracts

Background: Childhood adrenocortical tumours (ACT) are rare and have well been described as part of familial cancer susceptibility syndromes which are caused by single gene mutations including P53, MEN1, PRKAR1A, CTNNB1 and APC. Adenomas are the most common ACT, but adrenocortical carcinomas (ACC) occur as well. Childhood ACC can be part of the Li-Fraumeni Syndrome and Beckwith-Wiedemann syndrome. ACC can also occur in familial adenomatous polyposis coli (FAP). FAP is a colon ...

Background: Iodotyrosine deiodinase (DEHAL1) is a thyroidal enzyme that deiodinates mono- and diiodtyrosines (MIT, DIT) and recycles iodine, essential for synthesis of thyroid hormone. Iodotyrosine deiodinase deficiency leads to hypothyroidism, goiter and variable mental retardation. The age for clinical onset was reportedly very diverse, allegedly related to individual iodine nutrition.Clinical case: We report on a boy, offspring of consanguineous paren...

Background: Congenital isolated ACTH-deficiency is a rare disorder characterized by low plasma ACTH and cortisol levels and normal secretion of other pituitary hormones. TBX19 is a t-box transcription factor with a specific role in the differentiation of corticotroph cells. TPIT gene mutations can be found in early onset isolated ACTH deficiency.Case report: We report on a 2; 6 year old girl, offspring from consanguineous parents from Turkey, born at 40 ...

Background: Congenital adrenal hyperplasia (CAH) encompasses a group of autosomal recessive disorders which lead to impairment of steroid biosynthesis in the adrenals and gonads. 21-hydroxylase deficiency (21OHD) is the most common form of CAH (95%), followed by 11β-hydroxylase deficiency (11OHD) and 3β-dehydrogenase steroid dehydrogenase type 2 deficiency (3bHSD2). LC–MSMS based steroid analysis has become an increasingly important method for steroid analyses i...

Background/aims: The high complexity of Pediatric reference ranges across age, sex and units impairs clinical application and comparability of steroid hormone data, e.g., in CAHs. We developed a Multiples-of-Median (MoM) normalization tool to overcome this major drawback in Pediatric Endocrinology.Methods: LC–MS/MS data comprising 10 steroid hormones representing 905 controls (555 males, 350 females, 0 to >16 years) from two previous datasets we...