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Kevin Stroek Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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Annemieke C. Heijboer Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, Vrije Universiteit, Amsterdam, The Netherlands

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Marja van Veen-Sijne Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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Annet M. Bosch Division of Metabolic Disorders, Department of Pediatrics, Emma Children’s Hospital, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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Catharina P.B. van der Ploeg Department of Child Health, Netherlands Organization for Applied Scientific Research TNO, Leiden, The Netherlands

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Nitash Zwaveling-Soonawala Department of Paediatric Endocrinology, Emma Children’s Hospital, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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Robert de Jonge Department of Clinical Chemistry, Amsterdam UMC, Vrije Universiteit & University of Amsterdam, Amsterdam, The Netherlands

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A.S. Paul van Trotsenburg Department of Paediatric Endocrinology, Emma Children’s Hospital, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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Anita Boelen Endocrine Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands

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is hypothalamic or pituitary dysfunction, named secondary or central CH (CH-C) [ 1 ]. Early detection and treatment of CH prevent neurodevelopmental disabilities. Therefore, CH has been included in many newborn screening (NBS) programs worldwide since

Article Type:
Research Article
DOI:
https://doi.org/10.1159/000513516
Volume/Issue:
Volume 10: Issue 3
Open access
Heleen I Jansen Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location Vrije Universiteit Amsterdam, Boelelaan, Amsterdam, The Netherlands
Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Marije van Haeringen Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands
Department of Computer Science, Vrije Universiteit, Boelelaan, Amsterdam, The Netherlands

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Marelle J Bouva Reference Laboratory Neonatal Screening, Center for Health protection, National Institute for Public Health and the Environment, Bilthoven, The Netherlands

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Wendy P J den Elzen Department of Laboratory Medicine, Laboratory Specialized Diagnostics & Research, Amsterdam UMC, University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands
Amsterdam Public Health, Amsterdam, The Netherlands

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Eveline Bruinstroop Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Endocrinology and Metabolism, Amsterdam UMC location University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Catharina P B van der Ploeg TNO - Child Health, Sylviusweg, Leiden, The Netherlands

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A S Paul van Trotsenburg Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Paediatric Endocrinology, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Nitash Zwaveling-Soonawala Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Paediatric Endocrinology, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Annemieke C Heijboer Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location Vrije Universiteit Amsterdam, Boelelaan, Amsterdam, The Netherlands
Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands
Amsterdam Reproduction & Development Research Institute, Amsterdam, The Netherlands

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Annet M Bosch Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Pediatrics, Division of Metabolic Disorders, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Robert de Jonge Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Laboratory Medicine, Amsterdam UMC, Vrije Universiteit, Boelelaan, Amsterdam, The Netherlands
Department of Laboratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands

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Mark Hoogendoorn Department of Computer Science, Vrije Universiteit, Boelelaan, Amsterdam, The Netherlands

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Anita Boelen Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, The Netherlands
Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC location University of Amsterdam, Meibergdreef, Amsterdam, The Netherlands
Amsterdam Reproduction & Development Research Institute, Amsterdam, The Netherlands

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) concentration in combination with an increased thyroid-stimulating hormone (TSH) concentration, while central CH is characterized by a low T4 concentration and a normal, decreased, or slightly elevated TSH concentration ( 1 ). The Dutch newborn screening (NBS

Article Type:
Research Article
Collections:
Pediatric thyroid diseases
DOI:
https://doi.org/10.1530/ETJ-23-0141
Volume/Issue:
Volume 12: Issue 6
Open access
Shirley Langham Departments of Endocrinology, Great Ormond Street Hospital, Hospital for Children

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Peter Hindmarsh Developmental Endocrinology Research Group, Institute of Child Health, University College London, London, UK

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Steven Krywawych Departments of Chemical Pathology, Great Ormond Street Hospital, Hospital for Children

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Catherine Peters Departments of Endocrinology, Great Ormond Street Hospital, Hospital for Children
Developmental Endocrinology Research Group, Institute of Child Health, University College London, London, UK

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Introduction The newborn screening programme for CH was introduced in the UK in 1981 [ 1 , 2 ] and has virtually abolished cases of untreated congenital hypothyroidism (CH). CH is a common (1 in 3,000-4,000 live births) condition [ 3 , 4 ] in

Article Type:
Research Article
DOI:
https://doi.org/10.1159/000350039
Volume/Issue:
Volume 2: Issue 3
Free access
Paolo Cavarzere Pediatric Division, Department of Pediatrics, University Hospital of Verona, Verona, Italy

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Laura Palma Pediatric Division, Department of Pediatrics, University Hospital of Verona, Verona, Italy

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Lara Nicolussi Principe Pediatric Division, Department of Pediatrics, University Hospital of Verona, Verona, Italy

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Monica Vincenzi Pediatric Section, Department Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
Regional Center for Newborn Screening, Diagnosis and Treatment of Congenital Metabolic and Endocrinological Diseases, Verona, Italy

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Silvana Lauriola Neonatal Intensive Cure Unit, Department of Pediatrics, University Hospital of Verona, Verona, Italy

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Rossella Gaudino Pediatric Division, Department of Pediatrics, University Hospital of Verona, Verona, Italy
Pediatric Section, Department Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy

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Virginia Murri Pediatric Division, Hospital of San Bonifacio, Verona, Italy

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Luigi Lubrano Pediatric Division, Hospital of Legnago, Verona, Italy

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Giuliana Rossi Pediatric Division, Hospital of Mestre, Venezia, Italy

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Alessia Sallemi Pediatric Division, Hospital of Venezia, Venezia, Italy

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Ermanna Fattori Pediatric Division, Hospital of Negrar, Verona, Italy

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Marta Camilot Pediatric Section, Department Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
Regional Center for Newborn Screening, Diagnosis and Treatment of Congenital Metabolic and Endocrinological Diseases, Verona, Italy

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Franco Antoniazzi Pediatric Division, Department of Pediatrics, University Hospital of Verona, Verona, Italy
Pediatric Section, Department Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
Regional Center for the Diagnosis and Treatment of Children and Adolescents Rare Skeletal Disorders, Pediatric Clinic, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy

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treatment lead to a false negative newborn screening result for CH, delaying the necessary replacement therapy? In particular, to avoid the latest, some authors have suggested to perform serum thyroid function tests between 15 and 30 days of life in all

Article Type:
Research Article
Collections:
Hypothyroidism
DOI:
https://doi.org/10.1530/ETJ-22-0060
Volume/Issue:
Volume 11: Issue 5
Open access
Zohar Steinberg Ben-Zeev Pediatric Department A, Ha’Emek Medical Center, Afula, Israel

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Marina Peniakov Neonatal Intensive Care Unit, Ha’Emek Medical Center, Afula, Israel

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Clari Felszer Neonatal Intensive Care Unit, Ha’Emek Medical Center, Afula, Israel

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Scott A Weiner Neonatal Intensive Care Unit, Ha’Emek Medical Center, Afula, Israel

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Avishay Lahad Pediatric Department A, Ha’Emek Medical Center, Afula, Israel

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Shlomo Almashanu The National Newborn Screening Program, Ministry of Health, Tel Hashomer, Ramat Gan, Israel

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Yardena Tenenbaum Rakover Consulting Medicine in Pediatric Endocrinology, Clalit Health Services, Afula, Israel
The Rappaport Faculty of Medicine, Technion, Institute of Technology, Haifa, Israel

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benefit of performing TFT in addition to the newborn screening ( 20 , 21 , 22 , 23 , 24 , 25 ), whereas others have shown that the TFT are essential ( 3 , 26 , 27 , 28 , 29 , 30 ). In our neonatal department, the clinical practice is to perform

Article Type:
Research Article
Collections:
Thyroid and reproduction
DOI:
https://doi.org/10.1530/ETJ-22-0055
Volume/Issue:
Volume 11: Issue 4
Open access
Tal Almagor Pediatric Endocrine Institute, Ha’Emek Medical Center, Afula, Israel
Pediatric Department B, Ha’Emek Medical Center, Afula, Israel
Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel

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Shoshana Rath Pediatric Endocrine Institute, Ha’Emek Medical Center, Afula, Israel

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Dan Nachtigal Department of Otolaryngology, Head and Neck Surgery, Ha’Emek Medical Center, Afula, Israel

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Zohara Sharroni Department of Otolaryngology, Head and Neck Surgery, Ha’Emek Medical Center, Afula, Israel

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Ghadir Elias-Assad Pediatric Endocrine Institute, Ha’Emek Medical Center, Afula, Israel
Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel

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Ora Hess Pediatric Endocrine Institute, Ha’Emek Medical Center, Afula, Israel

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Gilad Havazelet Clalit Health Services, North District, Israel

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Yoav Zehavi Pediatric Department B, Ha’Emek Medical Center, Afula, Israel

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Ronen Spiegel Pediatric Department B, Ha’Emek Medical Center, Afula, Israel
Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel

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Dani Bercovich Faculty of Medical Science, Tel Hai Academic College Upper Galilee, Tel Hai, Israel
GGA – Galil Genetic Analysis Laboratory Ltd., Kazerin, Israel

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Shlomo Almashanu The National Newborn Screening Program, Ministry of Health, Tel-HaShomer, Israel

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Yardena Tenenbaum-Rakover Pediatric Endocrine Institute, Ha’Emek Medical Center, Afula, Israel
Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel

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at the Pediatric Endocrinology Institute, Ha’Emek Medical Center. The diagnosis of CH was based on abnormal thyroid function at birth; most patients were identified by the National Thyroid Newborn Screening Program. The etiology of the CH was

Article Type:
Research Article
Collections:
Hypothyroidism
DOI:
https://doi.org/10.1159/000509775
Volume/Issue:
Volume 10: Issue 3
Free access
Maria Lopes-Pereira Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal
Hospital de Braga, Braga, Portugal

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Anna Quialheiro Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal

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Patrício Costa Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal

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Susana Roque Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal

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Nadine Correia Santos Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal
ACMP5 – Associação Centro de Medicina P5 (P5), School of Medicine, University of Minho, Braga, Portugal

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Margarida Correia-Neves Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal

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Ana Goios Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal

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Ivone Carvalho Newborn Screening, Metabolism & Genetics Unit, National Institute of Health Dr Ricardo Jorge, Porto, Portugal

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Tim I M Korevaar Academic Center for Thyroid Diseases, Erasmus MC, Rotterdam, the Netherlands
Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
The Generation R Study Group, Erasmus MC, University Medical Center, Rotterdam, the Netherlands

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Laura Vilarinho Newborn Screening, Metabolism & Genetics Unit, National Institute of Health Dr Ricardo Jorge, Porto, Portugal

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Joana Almeida Palha Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
ICVS/3B’s, PT Government Associate Laboratory, Braga/Guimarães, Portugal
Clinical Academic Center-Braga (2CA-B), Braga, Portugal

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Objectives

Over 1.9 billion people worldwide are living in areas estimated to be iodine insufficient. Strategies for iodine supplementation include campaigns targeting vulnerable groups, such as women in pre-conception, pregnancy and lactation. Portuguese women of childbearing age and pregnant women were shown to be mildly-to-moderately iodine deficient. As a response, in 2013, the National Health Authority (NHA) issued a recommendation that all women considering pregnancy, pregnant or breastfeeding, take a daily supplement of 150–200 μg iodine. This study explored how the iodine supplementation recommendation has been fulfilled among pregnant and lactating women in Portugal, and whether the reported iodine supplements intake impacted on adverse obstetric and neonatal outcomes.

Design and methods

Observational retrospective study on pregnant women who delivered or had a fetal loss in the Braga Hospital and had their pregnancies followed in Family Health Units.

Results

The use of iodine supplements increased from 25% before the recommendation to 81% after the recommendation. This was mostly due to an increase in the use of supplements containing iodine only. Iodine supplementation was protective for the number of adverse obstetric outcomes (odds ratio (OR) = 0.791, P = 0.018) and for neonatal morbidities (OR = 0.528, P = 0.024) after controlling for relevant confounding variables.

Conclusion

The recommendation seems to have succeeded in implementing iodine supplementation during pregnancy. National prospective studies are now needed to evaluate the impact of iodine supplementation on maternal thyroid homeostasis and offspring psychomotor development and on whether the time of the beginning of iodine supplementation (how early during preconception or pregnancy) is relevant to consider.

Article Type:
Research Article
Collections:
Thyroid and reproduction
DOI:
https://doi.org/10.1530/ETJ-21-0035
Volume/Issue:
Volume 11: Issue 1
Open access
Anita Boelen Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam UMC, location University of Amsterdam, Amsterdam, The Netherlands
Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
Amsterdam Reproduction & Development Research Institute, Amsterdam, The Netherlands

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Nitash Zwaveling-Soonawala Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
Department of Pediatric Endocrinology, Emma Children’s Hospital, Amsterdam UMC, location University of Amsterdam, Amsterdam, The Netherlands

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Annemieke C Heijboer Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam UMC, location University of Amsterdam, Amsterdam, The Netherlands
Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
Amsterdam Reproduction & Development Research Institute, Amsterdam, The Netherlands
Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam UMC, location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands

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A S Paul van Trotsenburg Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
Department of Pediatric Endocrinology, Emma Children’s Hospital, Amsterdam UMC, location University of Amsterdam, Amsterdam, The Netherlands

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Introduction Congenital hypothyroidism (CH) is an inborn disorder of the endocrine system with potentially severe health consequences for the affected individual and was the second disorder to be included in the national newborn screening (NBS

Article Type:
Review Article
Collections:
Hypothyroidism
DOI:
https://doi.org/10.1530/ETJ-23-0041
Volume/Issue:
Volume 12: Issue 4
Open access
Cengiz Kara Department of Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
Department of Pediatric Endocrinology, Faculty of Medicine, Istinye University, Istanbul, Turkey

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Jamala Mammadova Pediatric Endocrinology Unit, Altinbas University Medicalpark Bahçelievler Hospital, Istanbul, Turkey

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Ümmet Abur Department of Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
Department of Medical Genetics, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey

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Cagri Gumuskaptan Department of Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
Department of Medical Genetics, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey

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Elif İzci Güllü Department of Pediatric Endocrinology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey

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Ayhan Dağdemir Department of Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey

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Murat Aydın Department of Pediatric Endocrinology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey

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%) than TCH (26%). CH, congenital hypothyroidism; LT4, l -thyroxine; PCH, permanent CH; PHT, persistent hyperthyrotropinemia; TCH, transient CH. Diagnosis of primary CH was based on the national newborn screening program implemented in December

Article Type:
Research Article
Collections:
Hypothyroidism
DOI:
https://doi.org/10.1530/ETJ-22-0212
Volume/Issue:
Volume 12: Issue 3
Open access
Sze May Ng Department of Women’s and Children’s Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
Department of Paediatrics, Southport and Ormskirk NHS Trust, Ormskirk, United Kingdom

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Mark A. Turner Department of Women’s and Children’s Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom

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Shivaram Avula Department of Radiology, Alder Hey Foundation Trust Hospital, Liverpool, United Kingdom

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-stimulating hormone elevation on newborn screening. J Pediatr 2014; 164: 846–854. 10.1016/j.jpeds.2013.11.057 24412140 10 Vade A, Gottschalk ME, Yetter EM, Subbaiah P: Sonographic measurements of the neonatal thyroid gland. J Ultrasound Med 1997; 16: 395

Article Type:
Research Article
DOI:
https://doi.org/10.1159/000481857
Volume/Issue:
Volume 7: Issue 1
Free access