hrp0094p2-411 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2021

Rationale for a reduced dexamethasone dose in prenatal congenital adrenal hyperplasia therapy based on pharmacokinetic modelling

Neumann Uta , Stachanow Viktoria , Blankenstein Oliver , Fuhr Uwe , Huisinga Wilhelm , Reisch Nicole , Kloft Charlotte

Context: Prenatal dexamethasone (Dex) therapy is used in female foetuses with congenital adrenal hyperplasia (CAH) to suppress adrenal androgen excess and prevent virilisation of the external genitalia. The prenatal dexamethasone dose of 20 µg/kg/d has been used for decades in prenatal CAH. Despite the risks for the treated mother and potentially for the unborn child, no clinical study or evaluation had been conducted in order to determine a Dex dose with a scientific rat...