Selpercatinib-Induced Hypothyroidism Through Off-Target Inhibition of Type 2 Iodothyronine Deiodinase.
Laura BoucaiFederico Salas-LuciaGnana P KrishnamoorthyEric J ShermanCharles M RudinAlexander E DrilonAntonio Carlos BiancoJames A FaginPublished in: JCO precision oncology (2022)
An off-target effect of selpercatinib on D2-mediated T3 production leads to clinical hypothyroidism, primarily in levothyroxine-treated athyreotic patients. Liothyronine supplementation was needed to achieve normal T3 levels and restore clinical euthyroidism.