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Lukas Plachy Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Petra Dusatkova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Klara Maratova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Shenali Anne Amaratunga Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Dana Zemkova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Vit Neuman Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Stanislava Kolouskova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Barbora Obermannova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Marta Snajderova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Zdenek Sumnik Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Jan Lebl Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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Stepanka Pruhova Department of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu, Prague, Czech Republic

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conditions such as brain tumors, trauma, infection or irradiation, and congenital forms of CPHD with a presumed genetic background ( 1 ). Pathogenic variants in more than 70 genes expressed during the prenatal development of the head, hypothalamus, and

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Marie Reeberg Sass Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Nicolai Jacob Wewer Albrechtsen Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark

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Jens Pedersen Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Department of Endocrinology and Nephrology, Nordsjællands University Hospital, Hillerød, Denmark

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Kristine Juul Hare Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Nis Borbye-Lorenzen Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Center for Neonatal Screening, Department of Congenital Disorders, Statens Serum Institute, Copenhagen, Denmark

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Katalin Kiss Department of Pathology, Rigshospitalet, Copenhagen, Denmark

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Tina Vilsbøll Steno Diabetes Center Copenhagen, Gentofte, Denmark
Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark

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Filip Krag Knop Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Steno Diabetes Center Copenhagen, Gentofte, Denmark
Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark

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Steen Seier Poulsen Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Niklas Rye Jørgensen Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Jens Juul Holst Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Cathrine Ørskov Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Bolette Hartmann Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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Objective:

Parathyroid hormone (PTH) is a key hormone in regulation of calcium homeostasis and its secretion is regulated by calcium. Secretion of PTH is attenuated during intake of nutrients, but the underlying mechanism(s) are unknown. We hypothesized that insulin acts as an acute regulator of PTH secretion.

Methods:

Intact PTH was measured in plasma from patients with T1D and matched healthy individuals during 4-h oral glucose tolerance tests (OGTT) and isoglycemic i.v. glucose infusions on 2 separate days. In addition, expression of insulin receptors on surgical specimens of parathyroid glands was assessed by immunochemistry (IHC) and quantitative PCR (qPCR).

Results:

The inhibition of PTH secretion was more pronounced in healthy individuals compared to patients with T1D during an OGTT (decrementalAUC0–240min: −5256 ± 3954 min × ng/L and −2408 ± 1435 min × ng/L, P = 0.030). Insulin levels correlated significantly and inversely with PTH levels, also after adjusting for levels of several gut hormones and BMI (P = 0.002). Expression of insulin receptors in human parathyroid glands was detected by both IHC and qPCR.

Conclusion:

Our study suggests that insulin may act as an acute regulator of PTH secretion in humans.

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Ursula M M Costa Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Carla R P Oliveira Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Roberto Salvatori Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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José A S Barreto-Filho Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Viviane C Campos Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Francielle T Oliveira Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Ivina E S Rocha Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Joselina L M Oliveira Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Wersley A Silva Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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Manuel H Aguiar-Oliveira Division of Cardiology, Division of Endocrinology, Division of Endocrinology, Federal University of Sergipe, Aracaju, SE 49060-100, Brazil

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and exercise echocardiography that showed no ischemia). The lack of subclinical atherosclerosis corroborates our previous finding that congenital IGHD is not a cause of CV mortality (17) . The calcium scores of IGHD individuals expressed as percentage

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Sandra R Dahl Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway

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Ingrid Nermoen Institute of Clinical Medicine, University of Oslo, Oslo, Norway
Division of Medicine, Akershus University Hospital, Lørenskog, Norway

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Ingeborg Brønstad National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen, Norway
Department of Clinical Medicine, University of Bergen, Bergen, Norway

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Eystein S Husebye Department of Clinical Science, University of Bergen, Bergen, Norway
K.G. Jebsen-Center for Autoimmune Diseases, University of Bergen, Bergen, Norway
Department of Medicine, Haukeland University Hospital, Bergen, Norway

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Kristian Løvås Department of Clinical Science, University of Bergen, Bergen, Norway
K.G. Jebsen-Center for Autoimmune Diseases, University of Bergen, Bergen, Norway
Department of Medicine, Haukeland University Hospital, Bergen, Norway

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Per M Thorsby Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway

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Introduction Congenital adrenal hyperplasia (CAH) is a group of autosomal recessive disorders with impaired biosynthesis of adrenal glucocorticosteroids and defects in cortisol biosynthesis. More than 95% of cases are caused by mutations in

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Manon Engels Department of Paediatrics, Radboud Amalia Children’s Hospital, Radboud university medical center, Nijmegen, The Netherlands
Laboratory Medicine, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands

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Paul N Span Radiation Oncology, Radiotherapy and OncoImmunology Laboratory, RIMLS, Radboud university medical center, Nijmegen, The Netherlands

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Rod T Mitchell MRC Centre for Reproductive Health, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Joop J T M Heuvel Laboratory Medicine, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands

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Monica A Marijnissen-van Zanten Department of Pathology, Radboud university medical center, Nijmegen, The Netherlands

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Antonius E van Herwaarden Laboratory Medicine, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands

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Christina A Hulsbergen-van de Kaa Department of Pathology, Radboud university medical center, Nijmegen, The Netherlands

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Egbert Oosterwijk Department of Urology, Radboud university medical center, Nijmegen, The Netherlands

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Nike M Stikkelbroeck Department of Internal Medicine, Radboud university medical center, Nijmegen, The Netherlands

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Lee B Smith MRC Centre for Reproductive Health, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Fred C G J Sweep Laboratory Medicine, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands

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Hedi L Claahsen-van der Grinten Department of Paediatrics, Radboud Amalia Children’s Hospital, Radboud university medical center, Nijmegen, The Netherlands

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Introduction Congenital adrenal hyperplasia (CAH) is a genetic disorder in which adrenocortical steroid synthesis is impaired due to a deficiency in particular steroidogenic enzymes, most often steroid 21-hydroxylase (CYP21A2). A wide range of

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Clemens Kamrath Center of Child and Adolescent Medicine, Justus Liebig University, Giessen, Germany

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Alexander Eckert German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
Institute of Epidemiology and Medical Biometry, ZIBMT, Ulm University, Ulm, Germany

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Birgit Rami-Merhar Department of Pediatrics and Adolescent Medicine, Medical University Vienna, Vienna, Austria

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Sebastian Kummer Department of General Pediatrics, Neonatology and Pediatric Cardiology, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany

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Martin Wabitsch Center for Rare Endocrine Diseases, Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, Ulm University Medical Centre, Ulm, Germany

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Katharina Laubner Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany

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Florian Kopp Forth Clinical Department of Medicine, Academic Teaching Hospital Augsburg, Augsburg, Germany

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Silvia Müther Center for Pediatric Diabetology, DRK-Kliniken-Berlin Westend, Berlin, Germany

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Steffen Mühldorfer Department for Gastroenterology, Endocrinology and Metabolic Diseases, Bayreuth University Hospital, Friedrich-Alexander University Erlangen-Nuremberg, Bayreuth, Germany

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Reinhard W Holl German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
Institute of Epidemiology and Medical Biometry, ZIBMT, Ulm University, Ulm, Germany

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in adipose tissue development or function (lipodystrophy (LD)) or primary disorders of insulin signaling ( 1 , 2 , 3 ). LDs are rare heterogeneous disorders characterized by selective loss of body fat and can be divided into congenital and

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Kathrin R Frey Department of Medicine I, Endocrine and Diabetes Unit, University Hospital, University of Würzburg, Würzburg, Germany

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Tina Kienitz Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

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Julia Schulz Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

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Manfred Ventz Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

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Kathrin Zopf Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

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Marcus Quinkler Endocrinology in Charlottenburg, Berlin, Germany

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Introduction In states of adrenal insufficiency (AI), such as primary adrenal insufficiency (PAI) and congenital adrenal hyperplasia (CAH), glucocorticoids (GCs) are given in low doses as hormone replacement therapy. However, the daily intake

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Bruno Donadille Service d’Endocrinologie et Médecine de la Reproduction, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Saint Antoine, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France

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Muriel Houang Service d’Explorations Fonctionnelles Endocriniennes, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Trousseau, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France

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Irène Netchine Service d’Explorations Fonctionnelles Endocriniennes, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Trousseau, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France
Université Pierre et Marie Curie, Sorbonne Université, Paris, France

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Jean-Pierre Siffroi Université Pierre et Marie Curie, Sorbonne Université, Paris, France
INSERM UMR_S933, Paris, France

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Sophie Christin-Maitre Service d’Endocrinologie et Médecine de la Reproduction, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Saint Antoine, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France
Université Pierre et Marie Curie, Sorbonne Université, Paris, France
INSERM UMR_S933, Paris, France

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Introduction Human 3beta-hydroxysteroid dehydrogenase deficiency (3b-HSD) is a very rare form of congenital adrenal hyperplasia resulting from HSD3B2 gene mutations (ORPHA90791) ( 1 ). Sixty-one unrelated families have been published since

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Tristan Avril Pediatric Endocrinology Department, CHU Bicetre, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR DevGen, Le Kremlin Bicêtre, Paris, France

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Quentin Hennocq Datascience platform, Imagine Institute, Université Paris Cité, Paris, France

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Anne-Sophie Lambert Pediatric Endocrinology Department, CHU Bicetre, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR DevGen, Le Kremlin Bicêtre, Paris, France

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Juliane Leger Pediatric Endocrinology Department, CHU Robert Debré, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR de la Croissance et du Développement, Paris, France
Université Paris Cité, Faculté de Santé, UFR de Médecine, Paris, France

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Dominique Simon Pediatric Endocrinology Department, CHU Robert Debré, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR de la Croissance et du Développement, Paris, France

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Laetitia Martinerie Pediatric Endocrinology Department, CHU Robert Debré, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR de la Croissance et du Développement, Paris, France
Université Paris Cité, Faculté de Santé, UFR de Médecine, Paris, France
Inserm UMR1185, Le Kremlin Bicetre, Paris, France

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Claire Bouvattier Pediatric Endocrinology Department, CHU Bicetre, Assistance Publique-Hôpitaux de Paris, Reference Center for Rare Disease CRMR DevGen, Le Kremlin Bicêtre, Paris, France
Inserm UMR1185, Le Kremlin Bicetre, Paris, France
Paris-Saclay University, Paris, France

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Introduction Congenital hypogonadotropic hypogonadism (CHH), a rare genetic condition of unknown prevalence (approximately 1/5000), can be diagnosed shortly after birth in boys who present with micropenis and/or unilateral or bilateral

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Henrik Falhammar Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden
Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden

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Hedi Claahsen-van der Grinten Department of Pediatric Endocrine Disease, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands

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Nicole Reisch Medizinische Klinik and Poliklinik IV, Department of Endocrinology, University Hospital Munich, Munich, Germany

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Jolanta Slowikowska-Hilczer Department of Andrology and Reproductive Endocrinology, Medical University of Lodz, Lodz, Poland

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Anna Nordenström Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
Department of Paediatric Endocrinology, Astrid Lindgren Children Hospital, Karolinska University Hospital, Stockholm, Sweden

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Robert Roehle Coordinating Center for Clinical Studies, Charité Universitätsmedizin, Berlin, Germany

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Claire Bouvattier Paris-Sud University, Orsay, France
Department of Pediatric Endocrinology, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France

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Baudewijntje P C Kreukels Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands

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Birgit Köhler Department of Paediatric Endocrinology and Diabetology, Charité Universitätsmedizin, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany

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on behalf of the dsd-LIFE group
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; and XX-DSD characterized by androgen excess such as congenital adrenal hyperplasia (CAH) ( 1 ). Due to the wide range of pathophysiology and presentation, patients with DSD may need a large variety of treatments such as genital surgery, sex hormone

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