ESPE Abstracts

Objective: Congenital isolated thyrotropin (TSH) deficiency is a rare condition due to autosomal recessive defects in TSHβ, TBL1X, IGSF1, TRHR genes. There are a few patients described with TSHβ mutations to date. These patients display the typical manifestations of severe untreated congenital hypothyroidism. Most patients are unrecognized, even in newborns screening settings due to unelevated TSH levels, which results in severe growth fail...