ESPE Abstracts

Ovotesticular disorder of sex development (OT-DSD) is a rare disorder of sexual differentiation characterized by the presence of both testicular and ovarian tissues in the gonads of the same individual. Patients usually present at birth with ambiguous genitalia, and the majority showed a 46,XX karyotype, with absence of the SRY sequence. In this study we reported on nine patients with OT-DSD, who were referred to the Human Genetics and endocrinology Clinics, division ...

Background: Mutations in CYP19A1 gene have been described in both females and males and to date only 20 cases with aromatase deficiency have been reported. In newborns, aromatase deficiency should be considered in the aetiology of 46, XX DSD, after ruling out congenital adrenal hyperplasia.Objective and hypotheses: Report of a case with CYP19A1 mutation.Method: Here we report a patient who was presenting at the age of 20 years old ...

Disorders of sex development (DSD) have defined as congenital conditions in which the development of chromosomal, gonadal, or anatomical sex is atypical. Wilms tumor 1(WT1) gene mutations have been described in 46,XY patients with ambiguous genitalia or complete gonadal dysgenesis with or without Wilms tumor, nephropathy, gonadoblastoma and other defects e.g. cryptorchidism, hypospadias. Sex chromosome mosaicism is a major cause of DSD with a wide phenotypic variability. The p...

Ovotesticular disorder of sex development (OT-DSD) is a rare disorder of sexual differentiation characterized by the presence of both testicular and ovarian tissues in the gonads of the same individual. Patients usually present at birth with ambiguous genitalia, and the majority showed a 46,XX karyotype, with absence of the SRY sequence. In this study we reported on nine patients with OT-DSD, who were referred to the Human Genetics and endocrinology Clinics, division ...

Background: Sex chromosome DSD constitute an important category in the definition of DSD.Objective and hypotheses: The study included 379 patients comprising a wide spectrum of presenting features, associated with different arrays of chromosomal abnormalities aiming at. Studying the prevalence of Sex chromosomal abnormalities among DSD patients.Method: Patients were subjected to detailed clinical examination, pubertal staging, cyto...

Background: Persistent Müllerian duct syndrome (PMDS) is a relatively rare autosomal recessive disorder of sex development (DSD), characterized by the presence of Müllerian duct derivatives in 46,XY phenotypic males. PMDS is due to mutations in the AMH gene or its type II receptor gene AMHR2. To date; more than 50 different mutations of the anti-Müllerian hormone (AMH) gene have been reported.Case report: Here, we report a novel mutation o...

Disorders of sex development (DSDs)represent a diverse group of clinical conditions which have a very wide phenotypic spectrum associated with a complicated molecular background.Such conditions are considered among the most common birth defects andare frequently associated with congenital abnormalities.Herein we present 62 patients with DSD associated with somatic anomalies. Patients were selected from clinical genetics dept., NRC. They underwent complet...

Background: Ovotesticular disorder of sex development (OT- DSD) is a very rare disorder characterized by the presence of both ovarian and testicular tissue in the same individual. It has an approximate incidence of less than 1/20 000.The patients usually present with ambiguous genitalia and the majority show a 46,XX karyotype, with absence of the SRY sequence.Objective and hypotheses: The study reports the cytogenetic variability and gonadal histological...

Background: Anti-Mullerian hormone (AMH) is produced by Sertoli cells and signals through two transmembrane receptors (AMHR), specific type II and type I, leading to regression of Mullerian ducts (uterus and fallobian tubes) during fetal male sex differentiation. Mutations of AMH and AMHR-II genes lead to persistence of Mullerian ducts in males. These conditions are transmitted in a recessive autosomal pattern and are symptomatic in 46,XY phenotypic males.<p class="abstext...

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 ...