ESPE Abstracts

Background: Thyroid hormones act via receptors (TRα; TRβ) encoded by separate genes (THRA, THRB). Mutations in THRA are a recently-recognised cause of Resistance to Thyroid Hormone alpha (RTHα), a disorder with tissue-specific hypothyroidism but near-normal thyroid function tests.Aim: We describe the youngest recorded case of RTHa, in a 2yr old boy with disproportionate short stature, ...

Background: Resistance to thyroid hormone beta (THRβ) is a clinical spectrum which varies in presentation even between individuals with the same mutation. Life-threatening cardiac dysfunction is recognized in homozygous THRβ state but never reported in cases of inherited heterozygous THRβ defects.Aim: We report the first case of familial inherited heterozygous (THRB) beta mutation presenting with ...

Introduction: Resistance to thyroid hormone beta, a rare disorder due to mutation in thyroid hormone receptor β, results in raised thyroid hormones with non-suppressed TSH and variable symptoms. Manifestations of RTHb in childhood include failure to thrive, propensity to ENT infections and behavioural abnormalities including ADHD. We report biochemical and behavioural responses to therapy with triiodothyroacetic acid (TRIAC), a centrally-acting thyroid ho...