ESPE Abstracts

Background: Hereditary Hypophosphatemic Rickets (HHR) is caused by persistently elevated FGF23 resulting in renal phosphate wasting and decreased 25 vitamin D hydroxylation. Treatment with vitamin D analogues (VDA) has been added to phosphate supplements in the late seventies.Objective and hypotheses: Our objective was to evaluate the outcomes of VDA and phosphate supplements in adult patients with HHR in comparison with patients who did not receive VDA ...

Hypogonadism, both primary and secondary, are well documented following cancer therapy. Primary ovarian insufficiency (POI) has most often been associated with exposure to alkylating agents (dose response) and radiation (RT) that includes the ovary (dose response). Early onset POI occurs commonly in girls exposed to ovarian RT at doses >10 Gy and following high-dose alkylating agents as is given for stem cell transplant. Late onset POI (ie, premature menopause) may be seen...

Background: A 5-year survival rates for children/adolescents diagnosed with cancer are currently ~80%, with survival rates ~90% for those with acute leukaemia, the most common type of cancer in this population. It is estimated that there will be some 500 000 survivors of childhood cancer in the USA by the year 2020. These impressive survival rates are due, in large part, to the use of multi-modality therapy (i.e., surgery, multiagent chemotherapy, and surgery) in a large propo...

Background: Graves’ disease therapy in young children may be challenging due to lack of therapy options. The safety of Radioiodine Ablation (RIA) has not been proven in children under age of 10 years. Propylthioracil (PTU) therapy has been linked to hepatic failure and became contraindicated in pediatrics.The case: A 6-year-old female was diagnosed with Graves ‘disease and treated with Methimazole (MTZ) and Propranolol. A few days after startin...

Introduction: The Newborn Screening Programme (NBS) enables earlier diagnosis of congenital hypothyroidism (CH). However, cases of central congenital hypothyroidism (CCH) are missed in countries which use thyroid stimulating hormone (TSH) based screening strategy. Understanding the pathogenic aetiology of CCH is particularly important because many patients have additional pituitary hormone deficiencies. New genes have been implicated in CCH, including the rece...

Background: NSIAD is a rare genetic cause of hyponatremia, due to activating mutations in AVPR2 gene, encoding the Arginine Vasopressin Receptor Type 2, and located on Xq28. Of the fewer than 30 reported cases, most have been managed with fluid restriction and urea.Objective and hypotheses: Illustration of the presentation of a family with this genetic abnormality and approach to management.Method: The clinical, biochemical and gen...

Background: HSH is a rare condition, first described by Paunier et al. (1968). It is an autosomal recessive disorder arising from impaired intestinal absorption of magnesium (Mg) together with renal Mg loss due to a re-absorption defect in the distal convoluted tubule. Mutations in the TRPM6 gene (Chr9q21) (OMIM #607009) have been identified as the underlying genetic defect. A review of 28 affected individuals (21 families) showed median age of diagnosis of 2 months, ...

Background: Several years ago, we developed a recombinant cell bioassay to determine serum estrogenic bioactivity (EBA). In addition to its physiological interest, EBA could be a good marker of endocrine-disrupting compounds (EDCs) with estrogenic activity and thus would be useful in the field of environmental-related endocrine diseases.Aims and objectives: To characterise the type of substances that mediate estrogenic activity.Met...

Background: The oestrogenic activity of endocrine-disrupting compounds (EDCs) has been reported to be associated with premature thelarche (PT) and precocious puberty. Some years ago, we developed a recombinant cell bioassay to determine serum estrogenic bioactivity (EBA) that is useful in physiology, as well as in the field of the environmental-related endocrine diseases. We recently improved the assay with an evaluation of EBA before and after incubation with estrogen recepto...

Background: Automimmune polyendocrinopathy candidiasis ectodermal dystrophy (APECED) is an extremely rare autoimmune condition caused by AIRE (autoimmune regulator) gene mutations and characterised by a classic triad of 1) chronic mucocutaneous candidiasis, 2) hypoparathyroidism and 3) adrenal insufficiency. APECED can involve any endocrine or non-endocrine organ. Consequently, clinicians need to be mindful of the great variability in presentation. Although ad...