ESPE Yearbook of Paediatric Endocrinology

To read the full abstract: J Clin Endocrinol Metab. 2020;105:e774–e7781.This prospective non-randomized clinical trial investigated the effect of two-years levothyroxine treatment in children with subclinical hypothyroidism (TSH 5.0–9.9 mU/l with normal FT4 for two years preceding the study) starting at a mean age of 9 years. Capalbo et al. observed no change in IQ scores in 20 children after two-years of levothyroxine. Furthe...

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...