ESPE Abstracts

Background: Congenital central hypothyroidism (CeH) may occur isolated, or in combination with other pituitary hormone deficiencies. Although a third causative gene for CeH was recently reported (IGSF1), the aetiology of isolated CeH has remained unexplained in most cases.Objective and hypotheses: We hypothesized that in three relatives with unexplained isolated CeH a mutation in another gene might be responsible for the phenotype.<p class="...

Background: Down Syndrome (DS) patients have a higher incidence of primary hypothyroidism. We previously demonstrated that transgenic mice overexpressing Dyrk1A had developmental (larger primary thyroids at E15.5 stage of development), morphological (disorganized follicles) and functional (significant lower plasma T4) impairments similar to DS thyroidal impairments (Endocrinology 2015). DYRK1A, localized in the DS critical region on chromosome 21, is therefore the can...

Background: Brain-Lung-Thyroid (BLT) syndrome (OMIM# 610978) is characterized by congenital hypothyroidism (CH), infant respiratory distress syndrome (IRDS), and benign hereditary chorea and is caused by thyroid transcription factor 1 (NKX2-1/TTF1) haploinsufficiency. The phenotype can be partial or complete and there is a large phenotypic variability.Objectives and hypotheses: Identify new genes in a selected group of patients presenting thyroi...

Background: Until now, altered balance of Th1 and Th2 immune cells has been postulated to play an important role in the pathogenesis of autoimmune thyroid diseases (AITD). However, recent studies on thyroid diseases have suggested a new role for Th17 cells that have been classified as a new lineage, distinct from Th1, Th2 and Treg cells. Despite wide interest, the role of Th17 cells in the pathogenesis of inflammatory and autoimmune diseases is still debated.<p class="abst...

Background: Primary care pediatricians (PCPs) use thyroid function tests (TFT) as screening tests in children and adolescents with various health complaints. Thus, it is crucial to evaluate the results according to appropriate cut-offs individualized to the child characteristics. Such references values, which are missing in the pediatric age group, are needed for proper evaluation of the thyroid functions.Objective and hypotheses: To determine normal TSH...

Background: Thyroid disorders in the neonatal period can have serious consequences for growth and development. Neonatal bloodspot screening identifies congenital hypothyroidism. Current guidelines both internationally and in tertiary centres in Ireland have moved towards checking thyroid function tests (TFTs) solely in infants of mothers with hyperthyroidism and those identified on neonatal bloodspot screening. The practice in OLOLH, Ireland was that all infants of mothers wit...