hrp0092mte1 | Holistic Approach to the Individual with DSD | ESPE2019

Holistic Approach to the Individual with DSD

Cools Martine

Management of DSD is a sensitive area within the field of paediatric endocrinology. On the one hand, major progress has been made in amongst others understanding the molecular genetic background and the germ cell cancer risk of certain DSD conditions. On the other hand, practices that were common in the past, such as early genital surgery have become strongly criticised and controversial nowadays, leaving clinicians as well as patients and their families with a lot of question...

hrp0094yb2.1 | Year of Paediatric Endocrinology 2 | ESPE2021

DSD and Transgender - Updates 2021

Flueck Christa , Cools Martine , Nordenstrom Anna ,

In the past year, basic and genetic studies revealed again novel genes and mechanisms implicated in 46,XX and 46,XY DSD. The Fgf9-/- mouse model of human synostosis syndromes revealed an unexpected male-to-female sex reversal phenotype, so far not observed in humans. Specific heterozygous human WT1 gene variants located in the 4th zinc finger were found to cause 46,XX virilization due to (ovo-)testicular DSD, and the transcription factor...

hrp0084p2-310 | DSD | ESPE2015

Management of Gonads in Adults with Androgen Insensitivity: An International Survey

Maris Ellen , Looijenga L H J , Cools Martine

Background: Individuals with androgen insensitivity syndrome (AIS) have an increased risk for developing a germ cell cancer (GCC). The risk is low during childhood; therefore, gonads are commonly preserved until after puberty. Little is known about GCC development in AIS during adulthood. This question is particularly relevant as many adult AIS women decline gonadectomy.Objective and hypotheses: To gain insight in attitudes towards gonadectomy in various...

hrp0097p1-571 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2023

Early and long-term gender-affirming treatment does not alter final height in transgender youth

Ciancia Silvia , Klink Daniel , Craen Margarita , Cools Martine

Keywords: transgender, GnRH agonists, gender affirming hormones, final height, growth, pubertyBackground: Trans boys (TB) and trans girls (TG) who start medical gender-affirming treatment at Tanner stage 2-3 undergo early puberty suppression (ePS) with Gonadotropin-Releasing Hormone agonists (GnRHa) for several years and subsequently receive gender-affirming hormones (GAH), around 15-16 years. This treatment clearly inte...

hrp0095t18 | Section | ESPE2022

SF1next study: spectrum of SF-1/NR5A1 gene variants in this large international cohort

Sommer Grit , Tack Lloyd , Cools Martine , Flück Christa , Study Group SF1next

Background: Loss-of-function variants in the NR5A1 gene are frequent causes of 46,XY differences of sex development (DSD). To date, the Human Gene Mutation Database contains 291 NR5A1 variants, most of which are missense (69%). Mouse models demonstrated the effect of loss of SF-1 on sex development, but the interactome of SF-1 is huge and an explanation for the broad phenotype is still missing. Controversies exist as: a) in vitro transactivation assays of NR5A...

hrp0092rfc8.6 | Pituitary, Neuroendocrinology and Puberty Session 1 | ESPE2019

Growth, Pubertal Course and Long-Term Outcome of 46,XY Boys Born with Atypical Genitalia and Low Birthweight

Tack Lloyd , Straaten Saskia van der , Cools Martine , consortium On behalf of the I-DSD

Introduction: Boys born small for gestational age (SGA) often have undermasculinized genitalia. Little is known about the pubertal development and gonadal function on a longer-term in this specific group of males.Aims: To determine the (pubertal) development and long-term urological and endocrine outcome of undermasculinized boys born SGA compared to undervirilized boys born appropriate for gestational age (AGA).<p c...

hrp0092p1-171 | Bone, Growth Plate and Mineral Metabolism (1) | ESPE2019

Evaluation of Bone Health in Adolescents and Young Adults After Allogeneic Human Stem Cell Transplantation in Childhood: A Single Center Cross-Sectional Study

De Waele Kathleen , Tack Lloyd , Bordon Victoria , Van Lancker Sophie , Dhooge Catharina , Cools Martine

Introduction: Hormonal deficits are well known complications after allogeneic human stem cell transplantation (alloHSCT) in childhood and treated according to existing guidelines. It is assumed that bone mass and strength accrual during puberty is also often impaired, due to toxic therapy and prolonged inactivity, but data on bone geometry and strength are scare in this particular group.Objective/Patients and Methods: Cr...

hrp0092p2-154 | GH and IGFs | ESPE2019

Determinants of the Peak GH Response of the Glucagon Stimulation Test in Slowly Growing Children

De Schepper Jean , Dewulf Charline , Craen Marghareta , Cools Martine , Gies Inge

Background/Aim: Currently, the minimum of the GH peak (pGH) to GH provocative stimuli, including the glucagon stimulation test (GST), has been arbitrary set in children at 7 µg/L, irrespective of gender and age. Several doses (fixed or per bodyweight) and ways of administration (IM or SC) of glucagon are being used in daily practice. This retrospective study explores the influence of gender, age, and adiposity on the pGH after a maximally effective glucag...

hrp0086p1-p341 | Gonads &amp; DSD P1 | ESPE2016

Application of on Line Learning in Assessment of Competencies of Fellows Pediatric Endocrinology

Kranenburg Laura , Reerds Sam , Cools Martine , Muscarella Miriam , Grijpink Kalinka , Quigley Charmian , Drop Stenvert

Background: The European Society for Paediatric Endocrinology (ESPE) developed an interactive e-learning portal for pre-and postdoctoral training: ( and hypotheses: The aim of the study was to evaluate the role of e-learning in the formative assessment of competencies (medical expert, communicator) of fellows in pediatric endocrinology in informing patients and parents with a di...

hrp0086p1-p366 | Gonads &amp; DSD P1 | ESPE2016

Consecutive Lynestrenol and Cross-Sex Hormone Treatment in Biological Female Adolescents with Gender Dysphoria: A Retrospective Analysis

Tack Lloyd , Craen Margarita , Dhondt Karlien , Vanden Bossche Heidi , Laridaen Jolien , Cools Martine

Background: Progestins such as lynestrenol (L) can be used in female to male (FtM) adolescents with gender dysphoria (GD) who have advanced pubertal development to reduce the psychological burden of menstruation. L can later be combined with cross-sex hormones (testosterone esters) (L+T). L is much cheaper and easier to administer than GnRHa. To date, few data exist on the (side) effects of progestins for this indication.Objective and hypotheses: To repo...