ISSN 1662-4009 (online)

Previous issue | Volume 20 | ESPEYB20

Yearbook of Paediatric Endocrinology 2023

4. Differences of Sexual Development (DSD) and Gender Incongruence (GI)

Novel Insights in Androgen Insensitivity Syndrome

ey0020.4-6 | Novel Insights in Androgen Insensitivity Syndrome | ESPEYB20

4.6. Formin-mediated nuclear actin at androgen receptors promotes transcription

J Knerr , R Werner , C Schwan , H Wang , P Gebhardt , H Grotsch , A Caliebe , M Spielmann , PM Holterhus , R Grosse , NC Hornig

Brief summary: This ex vivo/ in vitro study describes a novel regulatory mechanism of androgen receptor (AR) gene transcription by intranuclear actin assembly in droplets upon dihydrotestosterone (DHT) stimulation mediated by DAAM2 (Dishevelled-associated activator of morphogenesis 2) gene.Androgen insensitivity syndrome (AIS) is a common etiology in individuals with 46, XY disorder/differences of sex development, AIS has diverse genita...

ey0020.4-7 | Novel Insights in Androgen Insensitivity Syndrome | ESPEYB20

4.7. Genomic variants reducing expression of two endocytic receptors in 46,XY differences of sex development

HL Marko , NC Hornig , RC Betz , PM Holterhus , J Altmuller , H Thiele , M Fabiano , HU Schweikert , D Braun , U Schweizer

Brief summary: This translational study highlights the importance of 2 novel endocytic receptors that are involved in cellular androgen uptake and in the pathogenesis of androgen insensitivity syndrome (AIS) type II.Steroids circulate in complex with plasma transfer proteins, and specific endocytic receptors can mediate cellular uptake of transfer protein/ligand complexes. Reduced intracellular hormone concentrations resulting from impaired hormone uptak...