hrp0089rfc14.4 | Multisystem Endocrine Disorders | ESPE2018

A Novel Germline DICER1 Mutation in a Girl with Multinodular Goiter and Ovarian Sertoli-Leydig Cell Tumor

Settas Nikolaos , Michala Lina , Berthon Annabel , Faucz Fabio , Iliadi Alexandra , Gkika Anna , Dacou-Voutetakis Catherine , Stratakis Constantine , Voutetakis Antonis

Background: DICER1 is an endoribonuclease that acts post-transcriptionally by processing mRNA into siRNA and microRNA, thus leading to mRNA downregulation. DICER1 syndrome is usually caused by germline variants and is characterized by a variety of benign or malignant tumors: pleuropulmonary blastoma, ovarian Sertoli-Leydig cell tumor, cystic nephroma, pituitary blastoma and multinodular goitre. Patients with germline aberrations in the DICER1 gene may carry additional...

hrp0082fc6.1 | Gonads & DSD | ESPE2014

Search for Genetic Defects in the Transcription Factor Genes FOXL2, FOXE1, BMP15, NOBOX, and GDF9 in Children, Adolescents and Young Adults With Premature Ovarian Insufficiency POI

Settas Nikolaos , Anapliotou Margarita , Deligeoroglou Euthimios , Kanavakis Emmanuel , Fryssira Eleni , Kanaka-Gantenbein Christina , Michala Lina , Dacou-Voutetakis Catherine , Creatsas George , Chrousos George P , Voutetakis Antonis

Background: Molecular defects are rarely detected in Premature ovarian insufficiency (POI) patients.Objective and Hypotheses: We hypothesized that the frequency of causative molecular defects could be higher in cases with early onset of POI. Moreover, the analysis of multiple genes in the same POI group could disclose co-existence of more than one molecular aberration.Method: In 25 subjects, aged 17.1±7 years at POI onset, bid...

hrp0084p1-134 | Turner & Puberty | ESPE2015

Co-Existing Variants of FOXE1 and BMP15 Genes in Young Females with Primary Ovarian Insufficiency: Evidence of Digenic Inheritance

Settas Nikolaos , Michala Lina , Deligeoroglou Efthimios , Chrysis Dionisios , Pampanos Andreas , Theochari Eleni , Valla Olympia , Sofocleous Christalena , Sofia Kitsiou , Fryssira Helen , Kanavakis Emmanuel , Dacou-Voutetakis Catherine , Chrousos George P , Voutetakis Antonis

Background: FOXE1 gene variants containing alterations in the alanine tract length may confer susceptibility to primary ovarian insufficiency (POI). BMP15 gene variants have also been related to POI.Objective and hypotheses: To evaluate the contribution of FOXE1 and BMP15 variants in the pathogenesis of POI and to investigate the hypothesis of digenic inheritance in this disorder.Method: FOXE1 and BMP...