hrp0092p1-425 | Thyroid (2) | ESPE2019

Maternally Inherited Resistance to Thyroid Hormones with Discordant Postnatal Phenotypes in Two Infant Brothers

Cavin Rosalie , Chevalier Claudia , Van Vliet Guy , Deladoëy Johnny

Resistance to thyroid hormone due to mutations inactivating thyroid hormone receptor-Beta occurs in one in 40,000 individuals and can arise de novo or be inherited, generally in a dominant fashion. Clinical manifestations are widely variable and include failure to thrive in infancy. The biochemical diagnosis is usually straightforward: high serum fT4 and non-suppressed TSH.We report two brothers who both inherited the known c.728G>A, p.R24...