hrp0095p2-293 | Thyroid | ESPE2022

The importance of thyroid function tests in precocious menarche: Van Wyk Grumbach syndrome

Köprülü Özge , Acar Sezer

Introduction: Van Wyk Grumbach Syndrome (VWGS) is characterized by untreated severe hypothyroidism, isosexual precocious puberty, multiple ovarian cysts and delayed bone age. The disorder is most likely due to complex interactions of the hormonal axis; (1) excess TSH stimulates the FSH-receptor, (2) pituitary enlargement and hyperstimulation, (3) secondary ovarian hyperstimulation. Although it is extremely rare, it is important to recognize before the unnecess...

hrp0095rfc2.4 | Bone, Growth Plate and Mineral Metabolism | ESPE2022

Dysosteosclerosis is also caused by null mutations of TNFRSF11A

Kırkgöz Tarık , Ozkan Behzat , Acar Sezer , Hazan Filiz , Ikegawa Shiro , Guo Long

Dysosteosclerosis (DOS) is a rare form of dense bone disease and, short stature, recurrent fractures, optic atrophy, cranial nerve palsy, developmental delay, flattened fingernails, skin related complications, and failure of tooth eruption are the characteristic features of the disease (MIM %224300). Irregular osteosclerosis, flattened diffusely dense vertebral bodies, sclerotic skull, radiolucent sub-metaphyseal portions of the long tubular bones with sclerotic diaphysis are ...

hrp0092p3-124 | Fat, Metabolism and Obesity | ESPE2019

Early Onset Monogenic Obesity: Two Cases with Homozygous Mutation in Lepr Gene

Nalbantoglu Ozlem , Acar Sezer , Koprulu Ozge , Arslan Gulcin , Ozkaya Beyhan , Hazan Filiz , Gursoy Semra , Ozkan Behzat

Introduction: Although the majority of the cases with obesity have a multifactorial etiology, rare monogenic forms of obesity exist. Several genetic disorders have been described that lead to early onset monogenic obesity. Leptin (LEP), leptin receptor (LEPR), melanocortin 4 receptor (MC4R), proprotein converting protein subtilisin / kexin-type 1 (PCSK1) and proopiomelanocortin (POMC) are the genetic mutations that have been most frequently shown to cause mono...

hrp0089p2-p149 | Fat, Metabolism and Obesity P2 | ESPE2018

Galanin is Positively Correlated with Insulin Resistance and Triglyceride Levels in Obese Children

Acar Sezer , Paketci Ahu , Kume Tuncay , Demir Korcan , Calan Ozlem Gursoy , Bober Ece , Abacı Ayhan

Introduction: Galanin is a neuropeptide involved in the regulation of food intake and glucose homeostasis. The objective of this study was to assess the relation of serum galanin levels with anthropometric and metabolic parameters in obese and healthy children.Material and methods: This cross-sectional study consisted of 38 obese children (mean age, 11.9±3.0 years) and 30 healthy children (mean age, 11.4±2.0 years). Clinical and biochemical [gl...

hrp0086p2-p392 | Gonads & DSD P2 | ESPE2016

Identification of an AR Mutation in Klinefelter’s Syndrome during Evaluation for Penoscrotal Hypospadias

Acar Sezer , Tuhan Hale , Bora Elcin , Demir Korcan , Onay Huseyin , Ercal Derya , Bober Ece , Abaci Ayhan

Background: Klinefelter’s syndrome (KS) is the most prevalent chromosomal abnormality and clinically characterized by oligo-azoospermia, hypergonadotropic hypogonadism, gynecomastia and infertility in adults. Genital malformations in KS have rarely been reported.Objective and hypotheses: To investigate the etiology of penoscrotal hypospadias in a 14-month-old boy.Method: The patient was born from a healthy 23-year-old mother a...

hrp0095p1-300 | GH and IGFs | ESPE2022

Evaluation of the growth response of children with growth hormone deficiency according to peak growth hormone levels on provocative tests

Donbaloğlu Zeynep , Singin Berna , Acar Sezer , Bedel Aynur , Barsal Çetiner Ebru , Aydin Behram Bilge , Parlak Mesut , Tuhan Hale

Objective: We aimed to evaluate the relation between the peak growth hormone (GH) levels on provocative tests and response to recombinant human GH (rhGH) therapy in patients with GH deficiency (GHD).Methods: This was a cross-sectional, single-center, and retrospective study. A total of 518 patients who received rhGH therapy under the age of 16 in the Endocrinology Clinic of Akdeniz University Hospital between 1997 and 20...

hrp0092p3-2 | Adrenals and HPA Axis | ESPE2019

A Rare Cause of Primer Adrenal Insufficiency: NROB1 (DAX1) Mutation

Koprulu Ozge , Acar Sezer , Nalbantoglu Ozlem , Kirbiyik Ozgur , Arslan Gulcin , Ozkaya Beyhan , Ozdemir Taha Resid , Ozkan Behzat

Introduction: Congenital adrenal hypoplasia, a rare cause of childhood primer adrenal insufficiency, is caused by defects in transcription factors involved in the development of adrenal gland. One of them is the NROB1 (DAX1) gene, localized in Xp21.2. DAX1 mutations have been identified that cause X-linked adrenal hypoplasia congenita. Infants affected with X-linked adrenal hypoplasia congenita may present with salt-wasting, micropenis or cry...

hrp0092p1-285 | Thyroid (1) | ESPE2019

Evaluation of Thyroid Function Tests in Children with Chronic Liver Diseases

Ön S.Sebnem , Acar Sezer , Demir Korcan , Abaci Ayhan , Öztürk Yesim , Çelik Sinem Kahveci , Böber Ece

Backgrounds/Aims: Studies related to changes in thyroid hormone metabolism in the course of chronic liver diseases have been conducted mostly in adults. In this study, we aimed to investigate the thyroid dysfunction in childhood chronic liver diseases.Methods: Between 2005 and 2018, 960 chronic liver disease patient file that followed in our gastroenterology department are reviewed. Among all study subjects, 107 (53 fema...

hrp0092p2-284 | Thyroid | ESPE2019

Papillary Thyroid Cancer Associated with Hyperthyroidism

Acar Sezer , Paketçi Ahu , Demir Korcan , Ates Oguz , Özer Erdener , Özdogan Özhan , Böber Ece , Abaci Ayhan

Introduction: The most common causes of hyperthyroidism in the pediatric age group are autoimmune conditions (Graves' disease or Hashitoxicosis). Hyperfunctioning thyroid carcinomas are rarely reported. In this case report, we present a 17-year-old girl who was diagnosed with papillary thyroid carcinoma upon testing for hyperthyroidism.Case: A 17-year-old girl had presented to another center with a 1-month history of...

hrp0092p3-198 | Pituitary, Neuroendocrinology and Puberty | ESPE2019

A Rare Cause of Hypogonadotropic Hypogonadism: FGFR1Mutation

Mert Erbaş İbrahim , Paketçi Ahu , Acar Sezer , Kotan Damla , Demir Korcan , Abaci Ayhan , Böber Ece

Introduction: Mutations in FGFR1, which is involved in formation and migration of neurons responsible for the production of gonadotropin-releasing hormones, may either cause isolated hypogonadotropic hypogonadism (HH) or Kallmann syndrome (KS). In addition, FGFR1mutations were reported in 2.7% of the cases with multiple pituitary hormone deficiency.Case: A 16-year-old male was referred to our clinic...