Date: Wednesday 10 December 2025
Time: 16:00-17:30 (CET) | 15:00-16:30 (GMT)
Topic: Neonatal Thyroid

Agenda:
16:00 Welcome and introduction
Professor Anne Rochtus (Leuven, Belgium) – ESPE Connect Webinar Convenor
16:05 Congenital hypothyroidism and neonatal screening
Dr Emese Boros (Brussels, Belgium)
16:25 Thyroid hormone physiology in neonates
Professor Paul van Trotsenburg (Amsterdam, The Netherlands)
16:45 Interpreting neonatal thyroid function tests
Lesley Tetlow (Manchester, UK)
17:05 Panel Discussion and Q&A for all talks
All faculty
17:30 Webinar Close
Professor Anne Rochtus

Our ESPE Connect webinars are free to attend, but on-demand replays are only available to ESPE Members. If you’re not a member you can join here.

Find out more about our ESPE Connect Webinar series here.

Learn more about our speakers:

Dr Emese Boros
Emese Boros is a pediatric endocrinologist at the Hôpital Universitaire des Enfants Reine Fabiola (HUDERF) in Brussels. She graduated from the “Iuliu Hațieganu” University of Medicine and Pharmacy in Cluj-Napoca, Romania, and subsequently trained in pediatric endocrinology in Brussels and at Hôpital Bicêtre in Paris. Emese Boros is currently completing a PhD focused on thyroid diseases, with research interests spanning congenital hypothyroidism, thyroid dysgenesis, and autoimmune thyroid disorders. She has presented parts of her research at several European Society for Paediatric Endocrinology (ESPE) congresses.

Learning objectives:

• Explain the main causes of congenital hypothyroidism
• Recognize the impact of early detection and treatment on long-term neurodevelopmental outcomes
• Current challenges and futures improvements in CH screening programs

Professor Paul van Trotsenburg
Prof. Paul van Trotsenburg is a Dutch paediatric endocrinologist with a career in both clinical practice and academia. He earned his MD from the Free University of Amsterdam in 1990 and, after military service, became board-certified as a paediatrician in 1997, followed by certification in paediatric endocrinology in 2002. In 2006, he obtained his PhD from the University of Amsterdam, focusing on early development and the thyroid hormone state in Down syndrome.

Prof. van Trotsenburg has held several key positions, including Head of the Paediatric Endocrinology Department at the Amsterdam University Medical Center since 2010, and Professor of Paediatric Endocrinology since 2017.

His current research focuses mainly on paediatric thyroid and congenital pituitary disorders. He has published extensively in peer-reviewed journals, contributing to advancing understanding and management of congenital hypothyroidism (CH). Some of his key publications include studies on genetic causes of primary and central CH, thyroid function in healthy neonates, machine learning applications in newborn screening for CH, and clinical guidelines for managing primary and central CH, and paediatric Graves’ disease.

Prof. van Trotsenburg has been a member of ESPE since 2006, the Endocrine Society since 2010 and the European Thyroid Association since 2016. He served as a council member for ESPE from 2021-2023 and was the host of the 2023 ESPE Annual Meeting in The Hague, The Netherlands.

Mrs Lesley Tetlow
Lesley is Consultant Paediatric Clinical Biochemist Manchester University NHS Foundation Trust and Senior Lecturer at the University of Manchester.

After graduating in Biochemistry from Liverpool University in 1976 Lesley undertook a specialist training programme in Clinical Biochemistry, studying for an MSc at the University of Surrey. She moved to Manchester in 1979 and worked for 20 years at Withington Hospital. In 1989 she was appointed as Principal Biochemist in charge of the Immunoassay laboratory, specialising in adult endocrine biochemistry and tumour markers, developing and optimising assays for clinical use.

Having attained Membership of the Royal College of Pathologists in 1986 and Fellowship in 1996, Lesley was successful in securing a Consultant Biochemist post at Royal Manchester Children’s Hospital in 1999. There she has worked closely with the clinical teams developing and expanding the laboratory services and specialising in paediatric endocrine biochemistry. Working with the paediatric endocrine team and contributing to the weekly ward rounds has been the highlight of her career.

Lesley was Director of Newborn Screening from 2004-2020 and continues to work as a Clinical Advisor to the UK National Newborn Bloodspot programme. Her publications are mostly in the areas of breast cancer markers and endocrinology.