hrp0092p1-3 | Adrenals and HPA Axis | ESPE2019

Simplifying the Interpretation of Steroid Metabolome Data by a Machine-Learning Approach

Kirkgoz Tarik , Kilic Semih , Abali Zehra Yavas , Yaman Ali , Kaygusuz Sare Betul , Eltan Mehmet , Turan Serap , Haklar Goncagul , Sagiroglu Mahmut Samil , Bereket Abdullah , Guran Tulay

Background: Liquid chromatography-mass spectrometry (LC-MS) based panels of steroid hormones and their precursors offer a distinct pattern of steroid metabolome for various disorders of adrenal and gonadal steroidogenesis. However, it may not be easy to handle this high throughput data rapidly in clinical setting which requires expert opinion for correct interpretations. Analytical results of steroid panelling can be allied to automated review systems to simpl...

hrp0092p1-134 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology | ESPE2019

Targeted Panel Gene Sequencing for Identification of Genetic Etiology of 46,XY Disorders of Sex Development

Poyrazoglu Sukran , Toksoy Guven , Aghayev Agharza , Karaman Birsen , Avci Sahin , Altunoglu Umut , Yildiz Melek , Abali Zehra Yavas , Bas Firdevs , Basaran Seher , Uyguner Oya , Darendeliler Feyza

Background: Disorders of sex development (DSD) vary phenotypically and are caused by a number of genetic etiologies. Although several genetic abnormalities have been discovered through genetic analyses, the underlying genetic causes of 46, XY DSD remain unknown in most of the casesAim: To identify genetic defects in patients with 46,XY DSD.Material and Methods: A total 76 DSD patie...

hrp0092p1-159 | Adrenals and HPA Axis (1) | ESPE2019

Characteristics of puberty, pubertal height gain and final height in children with classical 21 hydroxylase deficiency

Abali Zehra Yavas , Yildiz Melek , Bas Firdevs , Onal Hasan , Abali Saygin , Cilsaat Gizem , Uyguner Zehra Oya , Turan Serap , Darendeliler Feyza , Bereket Abdullah , Guran Tulay

Context: There is a limited data from large cohorts regarding pubertal characteristics of children with classical 21-hydroxylase deficiency(21OHD).Objective: To explore the timing and tempo of puberty, and pubertal height gain(PHG) in children with 21OHD-CAH.Design: A multicenter observational, retrospective, longitudinal analysis.Patients: D...

hrp0092p1-176 | Bone, Growth Plate and Mineral Metabolism (1) | ESPE2019

Genotype and Phenotype Characterization of Turkish Patients with Vitamin D Dependent Rickets Type IA

Kaygusuz Sare Betul , Ata Pinar , Kirkgoz Tarik , Abali Zehra Yavas , Eltan Mehmet , Tosun Busra Gurpinar , Menevse Tuba Seven , Helvacioglu Didem , Guran Tulay , Arman Ahmet , Bereket Abdullah , Turan Serap

Background: Vitamin D Dependent Rickets Type IA (VDDR-IA) is the most common type of VDDR and caused by mutations in CYP27B1. Here, we aimed to analyze the genotypic and phenotypic features of our VDDR-IA patients.Materials and Methods: The patients with a clinical diagnosis of VDDR-IA were enrolled and analyzed for CYP27B1 gene mutations.Results: 12 (5 males) pat...

hrp0092p1-402 | Pituitary, Neuroendocrinology and Puberty (2) | ESPE2019

Evaluation of Brain Mri Lesions in 381 Girls with Central Precocious Puberty

Helvacioglu Didem , Guran Tulay , Kirkgoz Tarik , Atay Zeynep , Abali Zehra Yavas , Eltan Mehmet , Kaygusuz Sare Betul , Seven Tuba , Gurpinar Busra , Turan Serap , Bereket Abdullah

Central precocious puberty (CPP) in girls is a diagnosis increasingly made by the Pediatric Endocrinologists worldwide. Although it is most frequently of idiopathic origin, magnetic resonance imaging (MRI) of the brain is recommended to rule out organic lesions causing CPP. However, controversy exists regarding the age limits for routinely performing MRI in girls with CPP.Objective: To evaluate the outcome of brain MRI in girls diagnosed...

hrp0089p2-p050 | Bone, Growth Plate & Mineral Metabolism P2 | ESPE2018

Osteoporosis-pseudoglioma Syndrome (OPPG): Improvement of Osteoporosis on Biphosphonate Therapy

Karakilic Ozturan Esin , Altunoglu Umut , Derya Kardelen Asli , Yavas Abali Zehra , Avci Sahin , Kayserili Karabey Hulya , Poyrazoglu Sukran , Bas Firdevs , Darendeliler Feyza

Background: Osteoporosis-pseudoglioma syndrome (OPPG), rare autosomal recessive entity, is characterized by juvenile osteoporosis, bone deformities, neuromotor retardation, and congenital blindness. This syndrome is due to the loss-of-function mutation in LRP5 (Low-density lipoprotein receptor-related protein 5). Here report four cases from three families, with confirmed molecular diagnosis who showed improvement of osteoporosis improved with biphosphonate therapy.<p class...

hrp0089p1-p219 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology P1 | ESPE2018

Evaluation of Genetic Etiology in Patients with 46,XY Disorders of Sex Development: One Center Experience

Aghayev Agharza , Toksoy Guven , Poyrazoglu Sukran , Karaman Birsen , Avci Sahin , Yildiz Melek , Abali Zehra Yavas , Altunoglu Umut , Bas Firdevs , Darendeliler Feyza , Basaran Seher , Uyguner Oya

Background: Disorders of sex development (DSD) are a heterogeneous group of disorders related to sex determination and differentiation. Although several genetic abnormalities have been discovered through genetic analyses, the underlying genetic causes of 30–40% of the 46,XY DSD cases are not yet known.Aim: To identify genetic defects in patients with 46,XY DSD.Material and methods: Seventy-six patients with 46,XY DSD were stud...

hrp0082p1-d3-12 | Adrenals &amp; HP Axis (1) | ESPE2014

Adrenal Rest Tumors in Patients with Primary Adrenal Insufficiency

Abali Zehra Yavas , Saka Nurcin , Erol Oguz Bulent , Aydin Banu Kucukemre , Guran Tulay , Bas Firdevs , Poyrazoglu Sukran , Bundak Ruveyde , Darendeliler Feyza

Background: Gonads containing adrenal rests may enlarge in response to chronic overstimulation by ACTH in diseases with ACTH hypersecretion such as poorly controlled congenital adrenal hyperplasia (CAH), Addison’s disease and Nelson’s syndrome. Testicular adrenal rest tumors (TART) are present in childhood in CAH patients and frequency in adults may be up to 50–95%. Ovarian adrenal rest tumors (ART) are less frequently detected. TART is decribed less in patients...

hrp0084p2-320 | DSD | ESPE2015

The Evaluation of AR and SRD5A2 Gene Mutations in 87 Patients with 46, XY DSD Children in Turkey

Akcan Nese , Toksoy Guven , Uyguner Oya , Saka Nurcin , Altunoglu Umut , Abali Zehra Yavas , Genens Mikayir , Poyrazoglu Sukran , Bas Firdevs , Bundak Ruveyde , Kayserili Hulya , Darendeliler Feyza

Background: Main diagnosis of 46,XY disorders of sex development (DSD) with normal testosterone secretion Androgen insensivity sydrome (AIS) or 5α-reductase deficiency (5α-RD). In prepubertal period, AIS and 5α-RD present indistinguishable phenotypes that necessitate the molecular analyses for the definitive diagnosis.Objective and hypotheses: Clinical, hormonal and genetic investigation of 46,XY DSD patients who considered as PAIS or 5&#9...

hrp0084p3-1230 | Thyroid | ESPE2015

The Role of Thyroid Fine-Needle Aspiration Cytology in the Treatment and Follow-Up of Thyroid Nodules in the Paediatric Population

Genens Mikayir , Yilmaz Cansu , Ozluk Yasemin , Erol Oguz Bulent , Abali Zehra Yavas , Poyrazoglu Sukran , Bas Firdevs , Bundak Ruveyde , Firat Pinar , Bayhan Dilek Yilmaz , Darendeliler Feyza

Background: Although thyroid nodules are rare in children compared to adults, the risk of malignacy is higher. Thyroid fine-needle aspiration (FNA) is a reliable diagnostic method used in the prediction of malignancy in the evaluation of thyroid nodules together with clinical and ultrasonographic findings.Objective and hypotheses: To compare clinical, ultrasonographic, cytological and histopathological findings in patients who underwent FNA.<p class=...