hrp0089p1-p215 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology P1 | ESPE2018

Mutations Involving Nuclear Receptors and Their Cofactors as a Major Cause of 46,XX DSD

Bashamboo Anu , Eozenou Caroline , Houzelstein Denis , Bignon-Topalovic Joelle , Achermann John , McElreavey Ken

The genomic analysis of 46,XX individuals with testes (known as testicular Disorders/Differences of Sex Development (TDSD) or ovotestes (ovotesticular DSD (OTDSD)) supports the hypothesis that ‘pro-testis/anti-ovary’ or ‘pro-ovary/anti-testis’ genetic pathways exist. These children typically present with virilized genitalia due to testosterone production from the presence of testicular tissue. Many individuals with TDSD and a minority with OTDSD have a tran...

hrp0097lb18 | Late Breaking | ESPE2023

A Novel Variant of NR2F2 Associated with Non-syndromic 46,XY DSD

Wankanit Somboon , Zidoune Housna , Bignon-Topalovic Joëlle , Schlick Laurène , Houzelstein Denis , Fusee Leila , McElreavey Kenneth , Bashamboo Anu , Elzaiat Maëva

Differences of sex development (DSD) are congenital conditions with discordance between chromosomal, gonadal and/or anatomic sex. DSD can be syndromic or non-syndromic based on the presence or absence of somatic anomalies, respectively. Variants in several genes have been identified in association with errors of testis determination and male genital differentiation. However, despite technological advances, a genetic diagnosis is not achieved in nearly 50% of individuals presen...

hrp0092fc10.3 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology | ESPE2019

Mutations in the DEAH-box RNA Helicase DHX37 are a Frequent Cause of 46,XY Gonadal Dysgenesis and 46,XY Testicular Regression Syndrome

McElreavey Ken , Jorgensen Anne , Eozenou Caroline , Merel Tiphanie , Bignon-Topalovic Joelle , Tan Daisy , Houzelstein Denis , Buonocore Federica , Warr Nigel , Kay Raissa , Peycelon Mathieu , Siffroi Jean-Pierre , Mazen Inas , Achermann John , Shcherbak Yuliya , Leger Julienne , Sallai Agnes , Carel Jean-Claude , Martinerie Laetitia , Le Ru Romain , Conway Gerald , Mignot Brigitte , Van Maldergem Lionel , Bertalan Rita , Globa Evgenia , Brauner Raja , Jauch Ralf , Nef Serge , Greenfield Andy , Bashamboo Anu

XY individuals with Disorders/Differences of Sex development (DSD) are characterized by reduced androgenization caused, in some children, by gonadal dysgenesis or, more rarely, testis regression during early fetal development. The genetic etiology for most patients with 46,XY gonadal dysgenesis and for all patients with testicular regression syndrome (TRS) is unknown. Identification of novel genes involved in DSD is crucial for providing an accurate clinical diagnosis, aiding ...