ESPE Yearbook of Paediatric Endocrinology

Brief summary: Current guidelines for congenital hypothyroidism recommend a starting dose of 10–15 μg/d of levothyroxine for optimal treatment (1). Over the last years, some studies suggested that overtreatment of patients during infancy by high levothyroxine doses might have negative effects on neurocognitive and behavioral development (2). The presented multicenter prospective randomized trial aimed at comparing the effect of higher (12.5–15.0 μg/d levoth...

J Clin Endocrinol Metab. 2021 Sep 27;106(10):e3990-e4006. doi: 10.1210/clinem/dgab412. PMID: 34105732Brief Summary: This observational monocenter study analyzed cognitive scores of children with permanent (n=28, with athyreosis, ectopy or hypoplasia) vs. transient (n=11, with thyroid gland in situ) congenital hypothyroidism (CH) compared to healthy children (‘controls&#1...

Eur J Endocrinol. 2021 Nov 30;186(1):45-52. doi: 10.1530/EJE-20-1444. PMID: 34714772Brief Summary: This retrospective multicenter study examined the biochemical and neurocognitive outcomes of n=254 patients with congenital hypothyroidism (CH) at age 3 years, treated with either LT4 drops (n=117) or LT4 tablets (n=137). Overall, neurocognitive outcome was not different between the two treatment gr...