Personal profile
Specialisation
Irene Klaassen, MD, PhD is a pediatric hematologist at the Emma Children’s Hospital, Amsterdam University Medical Centers. She completed her pediatric residency at the Vrije University Medical Center in Amsterdam. Subsequently, in 2013 she received a fellowship training in pediatric hematology at the Emma Children’s Hospital, Amsterdam University Medical Centers in Amsterdam. She received her PhD doctorate on venous thromboembolic disease in pediatric malignancies in 2019. Her present research focuses on recurrent thrombosis and post thrombotic complications in pediatric thrombosis.
Education/Academic qualification
PhD
Award Date: 1 Feb 2019
Master, Medicine
Award Date: 30 Jan 2007
Keywords
- RJ101 Child Health. Child health services
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Collaborations and top research areas from the last five years
Research output
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An International Survey on the Assessment of Screening and Treatment of Thrombosis Complications in Pediatrics (ASTRO-Kids): communication from the ISTH SSC Subcommittee on Pediatric and Neonatal Thrombosis and Hemostasis
Cohen, C., Klaassen, I., Zhang, S., Kumar, R., Ahuja, S., Goldenberg, N., Rajpurkar, M., Betensky, M., Avila, L. & Zia, A., 2026, (E-pub ahead of print) In: Journal of thrombosis and haemostasis.Research output: Contribution to journal › Article › Academic › peer-review
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Systematic review on the design and methodology of the pediatric direct oral anticoagulant clinical trials for thrombosis prevention: communication from the ISTH SSC Subcommittee on Pediatric and Neonatal Thrombosis and Hemostasis
Whitworth, H., Betensky, M., Bhat, R. V., Al-Ghafry, M., Amankwah, E. K., Biss, T. T., Brandao, L., Chan, A., Holzhauer, S., Kiskaddon, A. L., Klaassen, I. L. M., Monagle, P., Raffini, L., Revel-Vilk, S., Sharathkumar, A., Sochet, A. A., van Ommen, C. H., Male, C. & Goldenberg, N. A., 2026, (E-pub ahead of print) In: Journal of thrombosis and haemostasis.Research output: Contribution to journal › Article › Academic › peer-review
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Acute pulmonary embolism in children and adolescents in the USA (2016 and 2019): a nationwide retrospective cohort study
Wolf, S., Valerio, L., Kucher, N., Konstantinides, S. V., Klaassen, I. L. M., van Ommen, C. H., Ay, C., Klok, F. A., Cannegieter, S. C. & Barco, S., May 2025, In: The Lancet Respiratory Medicine. 13, 5, p. 393-402 10 p.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile36 Downloads (Pure) -
High- and intermediate-risk pulmonary embolism in pediatric tertiary care centers in the Netherlands
van Balkom, C. A. M., Klaassen, I. L. M., Diender, M., Hovinga, I. K., Stein-Wit, M. A., Smiers, F. J. W. & Heleen van Ommen, C., 1 Aug 2025, In: Research and practice in thrombosis and haemostasis. 9, 6, 102972.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile27 Downloads (Pure) -
Incidence and risk factors for postthrombotic syndrome in neonates and children in a single-center cohort study
Klaassen, I., Sari, S., van Ommen, H., Rettenbacher, E., Fijnvandraat, K., Suijker, M. & Cannegieter, S., Jan 2025, In: Journal of thrombosis and haemostasis. 23, 1, p. 181-189 9 p.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile44 Downloads (Pure)