hrp0086fc15.1 | Late Breaking | ESPE2016

NR5A1 is a novel disease gene for 46,XX testicular and ovotesticular disorders of development

Baetens Dorien , Stoop Hans , Peelman Frank , Todeschini Anne-Laure , Rosseel Toon , Coppieters Frauke , Veitia Reiner , Looijenga Leendert , De Baere Elfride , Cools Martine

Background: While many causes of 46,XY disorders of sex development (DSD) have been elucidated, the mechanisms leading to 46,XX testicular or ovotesticular DSD are poorly understood. It has been hypothesized that both conditions may represent a phenotypic spectrum and that they might be caused by (different) mutations in the same genes.Methods: Whole exome sequencing was used to identify the molecular cause in ten unrelated patients with 46,XX (ovo)testi...

hrp0084p1-62 | DSD | ESPE2015

Prediction of Germ Cell Cancer Occurrence in Postpubertal Individuals with Androgen Insensitivity Based on Pathological Findings and Cancer Predisposition SNPs

Cools Martine , Wolffenbuttel Katja P , Kaprova Jana , Mendonca Berenice B , Drop Sten LS , Hersmus Remko , Stoop Hans , Gillis Ad JM , Costa Elaine MF , Domenice Soraiah , Wunsch Lutsz , Quigley Charmian , Arlt Wiebke , T'Sjoen Guy , Looijenga Leendert HJ

Background: Gonadectomy is generally postponed until early adulthood in complete androgen insensitivity syndrome (CAIS) and close surveillance of gonads in situ proposed in males with partial AIS (PAIS). Delaying gonadectomy further is controversial given the lack of data regarding germ cell cancer (GCC) development in adulthood and the absence of biomarkers for noninvasive GCC screening.Aims and objectives: To study the prevalence of invasive G...