dr. K. Fischer

dr. K. Fischer

Associate Professor - medical
dr. K. Fischer
  • Hematology/Van Creveldclinic

Research Programs



Kathelijn Fischer has been working at the University Medical Center Utrecht, both as a Paediatric Haematologist and a Clinical Epidemiologist.

Dr Fischer finished her medical training in 1988 is a registered paediatrician since 1994. Dr Fischer specialized in paediatric haematology and oncology in Utrecht, the Netherlands. Subsequently, she performed PhD research in haemophilia while training as a clinical epidemiologist. She published her thesis on ‘Treatment strategies in severe haemophilia: in search for the optimal treatment’ in 2001.

Dr Fischer supervises four PhD students and served as co-promotor for seven other PhD students in the field of haematology, neurology and gynaecology.

Dr Fischer is principal investigator in several international studies on long-term results of haemophilia treatment, and is the epidemiologist for the European Haemophilia Safety Surveillance Study (EUHASS-member of the steering committee) as well as for the European PedNet registry.

The specific areas of expertise and interest of dr Fischer include the epidemiology of haemophilia (including use of registries), prophylactic treatment, and outcome assessment in haemophilia care.

Side Activities

  • Membership of international working groups: International Prophylaxis Study Group (IPSG), European Association for Haemophilia and Allied Disorders (EAHAD; former EC member), she is a former co-chair of the FVIII/IX SSC subcommittee of the ISTH and participated in the group that drafted the Principles of Haemophilia Care.
  • Member of the National Haemophilia Registry Committee of the Dutch Haemophilia Treaters Board (NVHB)
  • Membership professional organisations: NVK (Dutch Paediatric Society,- section benign haematology), ISTH (International Society for Thrombosis and Haemostasis), WFH (World Federation for Haemophilia)
  • Section editor for Thrombosis and Haemostasis journal, member of the editorial board for Haemophilia journal

Fellowship and Awards

Bayer Haemophilia Special Project Award (2005)

Research Output (326)

Dilemmas on emicizumab in children with haemophilia A:A survey of strategies from PedNet centres

Ranta Susanna, Motwani Jayashree, Blatny Jan, Bührlen Martina, Carcao Manuel, Chambost Hervé, Escuriola Carmen, Fischer Kathelijn, Kartal-Kaess Mutlu, de Kovel Marloes, Kenet Gili, Male Christoph, Nolan Beatrice, d'Oiron Roseline, Olivieri Martin, Zapotocka Ester, Andersson Nadine G, Königs Christoph Sep 2023, In: Haemophilia. 29 , p. 1291-1298 8 p.

Psychometrics of the patient-reported outcomes measurement information system measures in hemophilia:the applicability of the pediatric item banks

Teela Lorynn, Luijten Michiel A.J., Kuijlaars Isolde A.R., van Gastel Tessa C.M., van Hoorn Evelien S., Gouw Samantha C., Fijnvandraat Karin C.J., Fischer Kathelijn, Cnossen Marjon H., Andeweg Sasja, van der Velden – van ‘t Hoff Carolien, Liem Corinne, Jansen-Zijlstra Margreet E., Peters Marjolein, Haverman Lotte Aug 2023, In: Research and practice in thrombosis and haemostasis. 7

DosEmi study protocol:a phase IV, multicentre, open-label, crossover study to evaluate non-inferiority of pharmacokinetic-guided reduced dosing compared with conventional dosing of emicizumab in people with haemophilia A

Donners Anouk, van der Zwet Konrad, Egberts Antoine C G, Fijnvandraat Karin, Mathôt Ron, Kruis Ilmar, Cnossen Marjon H, Schutgens Roger, Urbanus Rolf T, Fischer Kathelijn 26 Jun 2023, In: BMJ Open. 13

Insights in the Prothrombotic Changes after Implantation of a Left Ventricular Assist Device in Patients with End-Stage Heart Failure:A Longitudinal Observational Study

Liesdek Omayra C.D., Urbanus Rolf T., De Maat Steven, De Heer Linda M., Ramjankhan Faiz Z., Sebastian Silvie A.E., Huisman Albert, De Jonge Nicolaas, Vink Aryan, Fischer Kathelijn, Maas Coen, Suyker Willem J.L., Schutgens Roger E.G. 1 May 2023, In: ASAIO journal. 69 , p. 438-444 7 p.

Screening for subclinical synovial proliferation in haemophilia:A systematic review and meta-analysis comparing physical examination and ultrasound

van Leeuwen Flora H.P., Timmer Merel A., de Jong Pim A., Fischer Kathelijn, Foppen Wouter Mar 2023, In: Haemophilia. 29 , p. 445-455 11 p.

No immunological changes after factor VIII product switch:An in depth analysis in haemophilia A patients

Schep Sarah J, Fischer Kathelijn, Boes Marianne, Schutgens Roger E G 2023, In: Haemophilia. 29 , p. 1039-1048 10 p.

Magnetic resonance imaging evidence for subclinical joint bleeding in a Dutch population of people with severe hemophilia on prophylaxis

van Leeuwen Flora H P, van Bergen Eline D P, Timmer Merel A, van Vulpen Lize F D, Schutgens Roger E G, de Jong Pim A, Fischer Kathelijn, Foppen Wouter 2023, In: Journal of Thrombosis and Haemostasis. 21 , p. 1156-1163 8 p.

Subclinical synovial proliferation in patients with severe haemophilia A:The value of ultrasound screening and biochemical markers

van Bergen Eline D.P., van Leeuwen Flora H.P., Foppen Wouter, Timmer Merel A., Schutgens Roger E.G., Mastbergen Simon C., Lafeber Floris P.J.G., de Jong Pim A., Fischer Kathelijn, van Vulpen Lize F.D. 2023, In: Haemophilia. 29 , p. 1580-1588 9 p.

Low dose emicizumab prophylaxis in haemophilia a patients:A pilot study from India

Bansal Shweta, Donners Anouk A.M.T., Fischer Kathelijn, Kshirsagar Shrinath, Rangarajan Savita, Phadke Varsha, Mhatre Shrutika, Sontate Bharati, silva Magdelene D’, Ansari Shahana, Shetty Shrimati 2023, In: Haemophilia. 29 , p. 931-934 4 p.

Long-term joint outcomes in adolescents with moderate or severe haemophilia A

Schmidt David E, Michalopoulou Aikaterini, Fischer Kathelijn, Motwani Jayashree, Andersson Nadine G, Pergantou Helen, Ranta Susanna, 4 Aug 2022, In: Haemophilia. 28 , p. 1054-1061 8 p.

All research output

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