hrp0094fc10.3 | Thyroid | ESPE2021

Genetic analyses in patients having congenital hypothyroidism with gland-in-situ by next-generation sequencing

Levaillant Lucie , Bouhours-Nouet Natacha , Illouz Frederic , Bouzamondo Nathalie , Rodien Patrice , Prunier-Mirebeau Delphine , Coutant Regis ,

Introduction: Primary Congenital Hypothyroidism (CH) is an abnormal function of the thyroid gland present at birth. Anomalies of thyroid function are usually classified between thyroid dysgenesis, corresponding to an abnormal embryological development of the thyroid, and CH with gland-in-situ (GIS), resulting from mutations in genes involved in thyroid hormone synthesis. We report 105 patients with CH with GIS that have been referred to Angers University Hospi...

hrp0094fc10.2 | Thyroid | ESPE2021

Prevalence and outcome of Congenital Central Hypothyroidism: A Multicenter Study

Lucie Levaillant , German , Almashanu , De Vries Liat , Gil Merav , Halloun Rana , Haim Alon , Eyal Ori , Magid Yael , Levi Floris , Pivko-Levi Dikla , Nir Judith , Pinhas-Hamiel Orit , Tenenbaum-Rakover Yardena , Natacha Bouhours-Nouet , Frederic Illouz , Nathalie Bouzamondo , Patrice Rodien , Delphine Prunier-Mirebeau , Regis Coutant

Background: More than half of newborns with central congenital hypothyroidism (C-CH) have moderate-to-severe hypothyroidism in the neonatal phase, requiring immediate thyroxine therapy to prevent brain damage. The Israeli newborn screening for CH is based on the measurement of total T4 (TT4) followed by TSH measurement. However, when TSH is within the normal range the physicians are not informed of the results and therefore the diagnosis of C-CH and initiation...