hrp0089rfc9.2 | Pituitary, Neuroendocrinology and Puberty 1 | ESPE2018

Novel Variant in GNRHR Gene Regulatory Region in a Pedigree with Maternally Inherited Precocious Puberty

Stefanija Magdalena Avbelj , Kovač Jernej , Yablonski Galia , Phillip Moshe , Battelino Tadej , de Vries Liat

Background: Gonadotropin-releasing hormone (GNRH) and its receptor (GNRHR) are central regulators of puberty. Loss-of-function mutations of the GNRH-GNRHR signaling pathway are associated with congenital hypogonadotropic hypogonadism, but no mutations were reported so far in patients with central precocious puberty (CPP). Animal data demonstrate the importance of microRNAs in pubertal timing regulation. Among others, miR200b regulates Gnrh1 gene expression in GnRH neu...

hrp0089p3-p344 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology P3 | ESPE2018

A Case Report: A Girl with 46,XY Karyotype and Disorder of Androgen Synthesis

Šuput Omladič Jasna , Bertok Sara , Žerjav Tanšek Mojca , Kovač Jernej , Battelino Tadej , Hartmann Michaela F. , Wudy Stefan A , Avbelj Stefanija Magdalena

Background: Disorders of androgen synthesis are rare causes of 46,XY disorder of sex development (DSD) that present with undervirilization or sex reversal.Objective: A history of a female adolescent with 46,XY DSD, initially suspected to have complete androgen insensitivity is presented.Methods: Patient history was obtained from the medical records. Urinary steroid profile was preformed using gas chromatography/mass spectrometry. T...

hrp0089p1-p176 | Growth & Syndromes P1 | ESPE2018

Growth Plate Disorders are the Main Cause of Severe Familiar Short Stature in Children Classified and Treated with Growth Hormone as SGA or GHD

Plachy Lukaš , Strakova Veronika , Elblova Lenka , Dušatkova Petra , Obermannova Barbora , Šnajderova Marta , Kolouškova Stanislava , Zemkova Dana , Šumnik Zdeněk , Lebl Jan , Průhova Štěpanka

Introduction: Familiar short stature (FSS) is a common variant of growth with heterogeneous etiology. Children with FSS are often excluded from further check-up and treatment. However, significant number of children with FSS comply even with the European criteria for growth hormone (GH) therapy – patients with SHOX-deficiency, growth hormone deficiency (GHD) or these born short for gestational age (SGA). The aim of the study was to identify genetic etiology of short statu...

hrp0089p2-p309 | Pituitary, Neuroendocrinology and Puberty P2 | ESPE2018

MKRN3 Gene Mutations in a Cohort of Patients with Central Precocious Puberty

Stefanija Magdalena Avbelj , Kovač Jernej , Yablonski Galia , Toromanović Alma , Stipančič Gordana , Milenković Tatjana , Jančevska Aleksandra , Zdravković Vera , Jesić Maja , Vuković Rade , Stanković Sandra , Todorović Sladana , Hovnik Tinka , Phillip Moshe , Battelino Tadej , de Vries Liat

Background: MKRN3 gene, encoding Makorin RING-finger protein 3, is a maternally imprinted gene located at a Prader-Willi syndrome region on chromosome 15q11.13. Deleterious mutations of MKRN3 gene are a common cause of paternally inherited central precocious puberty (CPP), being identified in 33-46% of familial cases and in about 5% and 40% of apparently sporadic female and male cases, respectively.Objectives: To evaluate the presence o...

hrp0094yi1.1 | Young Investigators | ESPE2021

Identification of novel genetic causes of familial central precocious puberty

Avbelj Stefanija Magdalena , Kovač Jernej , Gat-Yablonski Galia , Novak Eva , Hovnik Tinka , Toromanović Alma , Stipančič Gordana , Milenković Tatjana , Vuković Rade , Todorović Slađana , Jančevska Aleksandra , Zdravković Vera , Jesič Maja , Stanković Sandra , Phillip Moshe , Battelino Tadej , de Vries Liat

Introduction: The major genetic cause of CPP is the paternally inherited Makorin RING-finger protein 3 (MKRN3) deficiency. Rare patients carry variants in kisspeptin and its receptor and DLK1.Objectives: To identify genetic causes of CPP.Population and methods: MKRN3 Sanger sequencing was performed in 56 unrelated subjects (12 familial non-maternal, 44 sporadic (6 boys)), whole-ge...

hrp0094p2-309 | Growth and syndromes (to include Turner syndrome) | ESPE2021

Early-onset growth hormone treatment in Prader-Willi syndrome attenuates the risk of transition to severe obesity

Kodytkova Aneta , El Lababidi Eva , Čermakova Ivana , Černa Jana , Čižek Jindřich , Dvořakova Marcela , Kalvachova Božena , Magnova Olga , Neumann David , Novotna Dana , Obermannova Barbora , Plašilova Ivana , Pomahačova Renata , Průhova Štěpanka , Strnadel Jiři , Škvor Jaroslav , Šnajderova Marta , Šumnik Zdeněk , Zapletalova Jiřina , Kusalova Kateřina , Šilar Jiři , Kolouškova Stanislava , Zemkova Daniela , Lebl Jan ,

Background: Following a phase of feeding difficulties and underweight in early life, children with Prader-Willi syndrome (PWS) develop hyperphagia and a tendency towards severe obesity. Growth hormone therapy (GH) has been approved in PWS to compensate their growth failure but may exert also additional effects on muscle component and body composition as well.Objectives: We aimed to test if an early initiation of GH thera...