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Contemporary global management of 21-hydroxylase deficiency congenital adrenal hyperplasia in early infancy: a multi-national registry study

  • David B.N. Lim
  • , Jillian Bryce
  • , Salma R. Ali
  • , Xanthippi Tseretopoulou
  • , Niels H. Birkebaek
  • , Sabine E. Hannema
  • , Ariadna Campos-Martorell
  • , Maria Clemente
  • , Uta Neumann
  • , Christa E. Flück
  • , Sara Metzger
  • , Ruth E. Krone
  • , Alina German
  • , Federico Baronio
  • , Pascal Barat
  • , Marine Delagrange
  • , Vanessa Vautier
  • , Ana Vieites
  • , Rodolfo Rey
  • , Heba Elsedfy
  • Navoda Atapattu, Sumudu N. Seneviratne, Martine Cools, Tulay Guran, Zehra Yavas Abali, Antony Fu, Dominika Janus, Savitha Shenoy, Malgorzata Wasniewska, Roberto Coco, Gianni Russo, Marianna Rita Stancampiano, Walter Bonfig, Mariacarolina Salerno, Hedi L. Claahsen-Van der Grinten, Bas P.H. Adriaansen, Chiara Mozzato, Laura Guazzarotti, Marek Niedziela, Magdalena Banaszak-Ziemska, Judith Van Eck, Tania Bachega, Mirela C. Miranda, Otilia Marginean, Jessica Munarin, Luisa De Sanctis, Ursina Probst-Scheidegger, Nina Lenherr-Taube, Daniel Konrad, Michele O’Connell, Aneta Gawlik-Starzyk, David E. Sandberg, Margarett Shnorhavorian, Nils Krone, S. Faisal Ahmed, Justin H. Davies*
*Corresponding author for this work
  • University Hospital Southampton NHS Foundation Trust
  • NHS Greater Glasgow and Clyde
  • University of Glasgow
  • Aarhus University Hospital
  • Amsterdam UMC
  • Autonomous University of Barcelona
  • Charité – Universitätsmedizin Berlin
  • University of Bern
  • Birmingham Women's and Children's NHS Foundation Trust
  • Emek Medical Center
  • University Hospital S. Orsola
  • University Hospital of Bordeaux
  • Hospital de Niños Dr. Ricardo Gutiérrez
  • Ain Shams University
  • Lady Ridgeway Hospital for Children
  • University of Colombo
  • Ghent University Hospital
  • Ghent University
  • Marmara University
  • Princess Margaret Hospital Hong Kong
  • Jagiellonian University in Kraków
  • Leicester Children's Hospital
  • University of Messina
  • IRCCS San Raffaele Scientific Institute
  • Technical University of Munich
  • Klinikum Wels - Grieskirchen GmbH
  • University of Naples Federico II
  • Radboud University Medical Center
  • Azienda Ospedaliera di Padova
  • University of Medical Sciences Poznan
  • Universidade de São Paulo
  • Victor Babes University of Medicine and Pharmacy
  • Ospedale Infantile Regina Margherita
  • University of Turin
  • Cantonal Hospital Winterthur
  • University of Zurich
  • Royal Children's Hospital Melbourne
  • Medical University of Silesia in Katowice
  • University of Michigan, Ann Arbor
  • Seattle Children's Hospital
  • University of Sheffield
  • University of Southampton

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective:

Management of 21-hydroxylase deficiency (21-OHD) congenital adrenal hyperplasia (CAH) in early infancy is challenging, with extent of variation in management unclear. 

Design and Methods:

Using the I-CAH Registry, we retrospectively reviewed management over the first 90 days of life of 154 infants with 21-OHD born in 2018-2023, across 33 centers in 18 countries. 

Results:

Of 154 infants (92 female, 62 male), 136 were diagnosed postnatally, with median (10th centile, 90th centile) presentation age of Day 4 (0, 20.8). At initial hospital discharge, median doses of hydrocortisone (HC), fludrocortisone (FC), and salt were 17 (11.4, 39.6) mg/m2/day, 100 (50, 200) mcg/day and 3.5 (1.6, 8.7) mmol/kg/day, and at Day 90 (D90) 14.5 (8.7, 24.1) mg/m2/day, 100 (50, 200) mcg/day, and 2.1 (1.0, 5.2) mmol/kg/day, respectively. Hyponatremia, hyperkalemia, and hypoglycemia were reported in 70.0%, 71.9%, and 13.0% of infants, respectively. At D90, hyponatremia and hyperkalemia were reported in 7.4% and 28.6%, respectively. At D90, BP measurements were recorded in 30.5%, amongst whom 31.9% had hypertension reported. Median total hospitalization duration over 90 days was 9 days (2, 24). Adrenal crises were associated with 40. 6% of hospitalization episodes. Percentages (males:females) of cases seen by a pediatric endocrinologist, psychologist, pediatric endocrine nurse specialist, and surgeon by D90 were 95.9% (58:84), 33.3% (9:35), 42.1% (20:36), and 23.8% (0:35), respectively. 

Conclusions:

Contemporary management of CAH in early infancy varies considerably. Hypertension and hyperkalemia are frequently reported. Our data may help inform development of quality indicators for benchmarking CAH care in infancy.

Original languageEnglish
Pages (from-to)123-135
Number of pages13
JournalEuropean Journal of Endocrinology
Volume194
Issue number2
DOIs
Publication statusPublished - Feb 2026

Bibliographical note

Publisher Copyright:
© The Author(s) 2026. Published by Oxford University Press on behalf of European Society of Endocrinology.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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