ISSN 1662-4009 (online)

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...

ey0017.3-12 | Clinical trials for thyroid disease | ESPEYB17

3.12. Effectiveness and safety of the tri-iodothyronine analogue Triac in children and adults with MCT8 deficiency: an international, single-arm, open-label, phase 2 trial

S Groeneweg , RP Peeters , C Moran , A Stoupa , F Auriol , D Tonduti , A Dica , L Paone , K Rozenkova , J Malikova , A van der Walt , IFM de Coo , A McGowan , G Lyons , FK Aarsen , D Barca , IM van Beynum , MM van der Knoop , J Jansen , M Manshande , RJ Lunsing , S Nowak , CA den Uil , MC Zillikens , FE Visser , P Vrijmoeth , MCY de Wit , NI Wolf , A Zandstra , G Ambegaonkar , Y Singh , YB de Rijke , M Medici , ES Bertini , S Depoorter , J Lebl , M Cappa , L De Meirleir , H Krude , D Craiu , F Zibordi , I Oliver Petit , M Polak , K Chatterjee , TJ Visser , WE Visser

To read the full abstract: Lancet Diabetes Endocrinol. 2019;7:695–706.The hallmarks of MCT8 deficiency are severe psychomotor retardation due to intracellular hypothyroidism in neuronal tissues and peripheral T3 thyrotoxicosis associated low weight, muscle wasting, high normal or increased heart rate and systolic blood pressure. TRIAC – the T3 analogue 3,3’,5-tri-iodothyroacetic acid – enters target cells in an MCT8 independe...

ey0018.3-13 | Clinical studies | ESPEYB18

3.13. Disease characteristics of MCT8 deficiency: an international, retrospective, multicentre cohort study

S Groeneweg , FS van Geest , A Abacı , A Alcantud , GP Ambegaonkar , CM Armour , P Bakhtiani , D Barca , ES Bertini , IM van Beynum , N Brunetti-Pierri , M Bugiani , M Cappa , G Cappuccio , B Castellotti , C Castiglioni , K Chatterjee , IFM de Coo , R Coutant , D Craiu , P Crock , C DeGoede , K Demir , A Dica , P Dimitri , A Dolcetta-Capuzzo , MHG Dremmen , R Dubey , A Enderli , J Fairchild , J Gallichan , B George , EF Gevers , A Hackenberg , Z Halasz , B Heinrich , T Huynh , A Kłosowska , MS van der Knaap , MM van der Knoop , D Konrad , DA Koolen , H Krude , A Lawson-Yuen , J Lebl , M Linder-Lucht , CF Lorea , CM Lourenco , RJ Lunsing , G Lyons , J Malikova , EE Mancilla , A McGowan , V Mericq , FM Lora , C Moran , KE Muller , I Oliver-Petit , L Paone , PG Paul , M Polak , F Porta , FO Poswar , C Reinauer , K Rozenkova , TS Menevse , P Simm , A Simon , Y Singh , M Spada , J van der Spek , MAM Stals , A Stoupa , GM Subramanian , D Tonduti , S Turan , CA den Uil , J Vanderniet , A van der Walt , JL Wemeau , J Wierzba , MY de Wit , NI Wolf , M Wurm , F Zibordi , A Zung , N Zwaveling-Soonawala , WE Visser

Lancet Diabetes Endocrinol. 2020;8:594–605. doi: 10.1016/S2213-8587(20)30153-4.Groenenweg et al. present the so far largest retrospective multicentre cohort study on 151 patients with 73 different MCT8 (SLC16A2) mutations to compare and describe in detail the phenotypic spectrum and the disease course of MCT8 deficiency. The careful description of presenting cl...