ISSN 1662-4009 (online)

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Yearbook of Paediatric Endocrinology 2020

3. Thyroid

Congenital hypothyroidism

ey0017.3-6 | Congenital hypothyroidism | ESPEYB17

3.6. Neonatal screening for congenital hypothyroidism: what can we learn from discordant twins?

E Medda , MC Vigone , A Cassio , F Calaciura , P Costa , G Weber , T de Filippis , G Gelmini , M Di Frenna , S Caiulo , R Ortolano , D Rotondi , M Bartolucci , R Gelsomino , S De Angelis , M Gabbianelli , L Persani , A Olivieri

To read the full abstract: J Clin Endocrinol Metab. 2019;104:5765–5779.It is not clear whether retesting is needed for a healthy cotwin of a twin pair discordant for congenital hypothyroidism (CH) at the first neonatal screening. Medda et al. retrospectively analyzed a cohort of 47 twin pairs discordant for CH at the first neonatal screening. On follow-up, 7 (15%) of cotwins who were initially negatively screened then tested positi...

ey0017.3-7 | Congenital hypothyroidism | ESPEYB17

3.7. DUOX2/DUOXA2 mutations frequently cause congenital hypothyroidism that evades detection on newborn screening in the UK

C Peters , AK Nicholas , E Schoenmakers , G Lyons , S Langham , EG Serra , NJ Sebire , M Muzza , L Fugazzola , N Schoenmakers

To read the full abstract: Thyroid. 2019;29:790–801.Patients with mutations in the dual oxidase 2 (DUOX2 ) gene – encoding a NADPH oxidase that generates hydrogen peroxidase for iodide organification – have been repeatedly reported as not being detected by neonatal screening because it causes only mild hyperthyrotropinemia at birth. Here, Peters et al. determined the incidence of DUOX2 and dual oxidase 2...

ey0017.3-8 | Congenital hypothyroidism | ESPEYB17

3.8. Thyrocyte cell survival and adaptation to chronic endoplasmic reticulum stress due to misfolded thyroglobulin

Y Morishita , O Kabil , KZ Young , AP Kellogg , A Chang , P Arvan

To read the full abstract: J Biol Chem. 2020;295:6876–6887.In this experimental study, Morishita et al. developed a CRISPR/Cas-9 mediated cell model to investigate the molecular effects of thyroglobulin (TG) accumulation in the endoplasmatic reticulum (ER) of thyrocytes, as is observed in the context of dyshormonogenic CH caused by TG gene mutations. TG accumulation in the ER is a result of TG mutations altering t...