The European Paediatric Network for Haemophilia Management ( PedNet Registry)
PedNet
1 other identifier
observational
4,000
19 countries
39
Brief Summary
Rationale: Haemophilia is a rare disease; to improve knowledge international collaboration is needed. Well-defined clinical data will be collected from complete cohorts in order to prevent selection bias. Objective: To collect data on bleeding during neonatal period, endogenous (genetic) and exogenous (treatment-related) determinants of inhibitor development and long term outcome.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jun 2014
Longer than P75 for all trials
39 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2014
CompletedFirst Submitted
Initial submission to the registry
October 21, 2014
CompletedFirst Posted
Study publicly available on registry
December 1, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2039
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2039
September 16, 2025
September 1, 2025
25.5 years
October 21, 2014
September 9, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Number of patients with antibody development to exogenous clotting factors
Allo-antibodies against Factor VIII and IX; Blood test: measurement in Bethesda units (BU), positive according to local standards, for most labs \>0.5 BU
Until patient reaches age of 18
Secondary Outcomes (2)
Long term outcome of haemophilia on joint status using the Hemophilia Joint Health Score (HJHS) and MRI techniques.
From diagnose every 5 years until patient reaches age of 18
Long term outcome different Immune Tolerance Induction (ITI) therapies in patients with inhibitor.
From date first positive inhibitor titer preferably every 3 years until patient reaches age of 18
Study Arms (4)
Cohort I
Children with mild ( FVIII/IX 6 to 25%), moderate (FVIII/IX 1 to 5%) or severe (FVIII/IX \<1%) haemophilia A or B, born from January 1st 2000 until December 31st 2009 who have been or are to be treated with coagulation proteins in one of the participating centres
Cohort II
Children with mild ( FVIII/IX 6 to 25%), moderate (FVIII/IX 1 to 5%) or severe (FVIII/IX \<1%) haemophilia A or B, born from January 1st 2010 until December 31st 2019 who have been or are to be treated with coagulation proteins in one of the participating centres
Cohort III
Children with mild ( FVIII/IX 6 to 25%), moderate (FVIII/IX 1 to 5%) or severe (FVIII/IX \<1%) haemophilia A or B, born from January 1st 2020 until December 31st 2029 who have been or are to be treated with coagulation proteins in one of the participating centres
Cohort IV
Cohort IV Group/Cohort Description: Children with mild ( FVIII/IX 6 to 25%), moderate (FVIII/IX 1 to 5%) or severe (FVIII/IX \<1%) haemophilia A or B, born from January 1st 2030 until December 31st 2039 who have been or are to be treated with coagulation proteins in one of the participating centres
Eligibility Criteria
Children with mild ( FVIII/IX 6 to 25%), moderate (FVIII/IX 1 to 5%) or severe (FVIII/IX \<1%) haemophilia A or B, born from January 1st 2000 until January 1st 2030 who have been or are to be treated in one of the participating centres
You may qualify if:
- Diagnosed with Haemophilia A or B
- Factor VIII/ IX activity of \<1 to 25%
- Complete records of Factor treatment and bleeds
- Treated in one of the participating centres
You may not qualify if:
- Patients referred because of an inhibitor\*
- Informed consent not obtained
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (39)
Universitäts-Klinik fĂ¼r Kinder- und Jugendheilkunde
Graz, A-8036, Austria
Medical University of Vienna - Department of Paediatrics
Vienna, Austria
Service of Pediatric Haematology University Hospital Leuven
Leuven, B-3000, Belgium
Division of Hematology/Oncology HĂ´pital St Justine
Montreal, H3T 1C5, Canada
Division of Haematology/Oncology Hospital for Sick Children
Toronto, M5G-1X8, Canada
Haemophilia Comprehensive Care Centre, Centre for Thrombosis and Haemostasis Children's University Hospital Brno
Brno, 613 00, Czechia
Department of Paediatric Haematology/oncology - University Hospital Motol
Prague, 150 06, Czechia
Department of Pediatrics Ă…rhus Kommunehospital Skejby Sygehus
Aarhus, DK-8200, Denmark
Children's Hospital Helsinki University Hospital
Helsinki, FIN-00029, Finland
Service Hématologique Centre Regional Traitement d'Hemophilie Bicetre
Le Kremlin-BicĂªtre, F-94270, France
Service d'Hématologie Pédiatrique Hôpital Universitaire La Timone
Marseille Cedex-05, F-13385, France
Centre de traitement des hémophiles Hôpital Universitaire Purpan
Toulouse, F-31052, France
CharitĂ© Campus Virchow Klinikum, Klinik fĂ¼r Pädiatrie m.S. Onkologie und Hämatologie
Berlin, Germany
Department of Internal Medicine, Hemophilia Treatment Center, Vivantes Klinikum im Friedrichshain
Berlin, Germany
Institut fĂ¼r Experimentelle Hämatologie und Transfusionsmedizin Universitätsklinikum Bonn
Bonn, D-53127, Germany
Klinik Bremen-Mitte Prof.-Hess-Kinderklinik
Bremen, D 28177, Germany
Hämophilie Zentrum Rhein Main
Frankfurt, D-60596, Germany
University Hospital Frankfurt & Goethe University - Clinical and Molecular Hemostasis, Department of Pediatrics
Frankfurt am Main, Germany
Dr. v. Haunersches Kinderspital University of Munich
Munich, D-80337, Germany
Haemophilia-Haemostasis Unit St. Sophia Children's Hospital
Athens, GR-11527, Greece
Children's Health Ireland (CHI) at Crumlin
Dublin, Ireland
The National Hemophilia Center Sheba Medical Center, Tel Hashomer
Ramat Gan, 52621, Israel
Azienda Ospedaliero Universitaria Careggi
Florence, Italy
Gaslini Hospital
Genova, I-16184, Italy
A. Bianchi Bonomi Hemophilia and Thrombosis Centre IRCCS Ca' Granda Ospedale Maggiore Policlinico
Milan, 20122, Italy
Van Creveld Kliniek University Medical Center Utrecht
Utrecht, 3508 GA, Netherlands
Oslo University Hospital
Oslo, Norway
Centro Hospitalar SĂ£o JoĂ£o, S. Imuno-hemoterapia
Porto, Portugal
Unitat Hemofilia Hospital Vall d'Hebron
Barcelona, 08035, Spain
Unidad de CoagulopatĂas Hospital Universitario La Paz
Madrid, 28046, Spain
Hospital General Unidad de Hemofilia 1 Sur Hospitales Universitarios Virgen del Rocio
Seville, 41013, Spain
Unidad de Coagulopatias Congenitas Hospital Universitario la Fe
Valencia, 46009, Spain
Lund University Hospital
Malmo, S-20502, Sweden
Department of Pediatrics, Clinic of Coag. Disorders Karolinska Hospital
Stockholm, S-17176, Sweden
Inselspital Bern, University Children's Hospital
Bern, Switzerland
Birmingham Children's Hospital NHS Trust - Department of Haematology
Birmingham, United Kingdom
Royal Hospital for Sick Children
Edinburgh, EH9 1LF, United Kingdom
Department of Haematology Royal Hospital for Sick Children
Glasgow, G 3885, United Kingdom
Haemophila Center Great Ormond Street Hospital for Children
London, WC1N3JH, United Kingdom
Related Publications (33)
de Kovel M, van Haaster AC, Carcao M, Ranta S, Glosli H, Rivard GE, Kenet G, Kurnik K, Van Geet C, Carvalho M, Andersson NG, Kartal-Kaess M, Ljung R, van den Berg HM; PedNet Study Group. Blood Group O Does Not Increase the Risk of Inhibitors in Severe Haemophilia A: Data from the PedNet Study Group. Haemophilia. 2025 May;31(3):419-423. doi: 10.1111/hae.70035. Epub 2025 Mar 23.
PMID: 40123267BACKGROUNDCarcao M, Konigs C, Andersson NG, de Kovel M, de Boer-Verdonk E, Motwani J, Blatny J, Olivieri M, van den Berg M, Fischer K. Predictors of immune tolerance induction success in 231 children with severe hemophilia A with high-titer inhibitors - lessons learned from the PedNet prospective cohort study. J Thromb Haemost. 2025 Oct;23(10):3134-3147. doi: 10.1016/j.jtha.2025.07.010. Epub 2025 Jul 22.
PMID: 40706963BACKGROUNDMendoza A, Rivas I, Hidalgo OB, Cid AR, Olivieri M, Ranta S, Labarque V, Andersson NG, de Kovel M, Alvarez-Roman MT. Impact of Family History of Haemophilia on Diagnosis, Management and Outcomes in Severe Haemophilia. Haemophilia. 2025 Jul;31(4):679-686. doi: 10.1111/hae.70018. Epub 2025 May 30.
PMID: 40444652BACKGROUNDRanta S, Zapotocka E, Andersson NG, Fischer K, Kenet G, de Kovel M, Konigs C, Labarque V, Male C, Olivieri M, Motwani J. A survey on clinical practice in monitoring and management of bleeding in children with haemophilia A on emicizumab prophylaxis in the PedNet centres. Thromb Res. 2025 May;249:109307. doi: 10.1016/j.thromres.2025.109307. Epub 2025 Mar 19. No abstract available.
PMID: 40120320BACKGROUNDvan den Berg HM, Gouw SC, van der Bom JG. Factor VIII products and inhibitors in severe hemophilia A. N Engl J Med. 2013 Apr 11;368(15):1457. doi: 10.1056/NEJMc1301995. No abstract available.
PMID: 23574131BACKGROUNDGouw SC, van den Berg HM, Fischer K, Auerswald G, Carcao M, Chalmers E, Chambost H, Kurnik K, Liesner R, Petrini P, Platokouki H, Altisent C, Oldenburg J, Nolan B, Garrido RP, Mancuso ME, Rafowicz A, Williams M, Clausen N, Middelburg RA, Ljung R, van der Bom JG; PedNet and Research of Determinants of INhibitor development (RODIN) Study Group. Intensity of factor VIII treatment and inhibitor development in children with severe hemophilia A: the RODIN study. Blood. 2013 May 16;121(20):4046-55. doi: 10.1182/blood-2012-09-457036. Epub 2013 Apr 3.
PMID: 23553768BACKGROUNDCarcao MD, van den Berg HM, Ljung R, Mancuso ME; PedNet and the Rodin Study Group. Correlation between phenotype and genotype in a large unselected cohort of children with severe hemophilia A. Blood. 2013 May 9;121(19):3946-52, S1. doi: 10.1182/blood-2012-11-469403. Epub 2013 Mar 12.
PMID: 23482934BACKGROUNDClausen N, Petrini P, Claeyssens-Donadel S, Gouw SC, Liesner R; PedNet and Research of Determinants of Inhibitor development (RODIN) Study Group. Similar bleeding phenotype in young children with haemophilia A or B: a cohort study. Haemophilia. 2014 Nov;20(6):747-55. doi: 10.1111/hae.12470. Epub 2014 Jun 3.
PMID: 24893572BACKGROUNDFischer K, Ljung R, Platokouki H, Liesner R, Claeyssens S, Smink E, van den Berg HM. Prospective observational cohort studies for studying rare diseases: the European PedNet Haemophilia Registry. Haemophilia. 2014 Jul;20(4):e280-6. doi: 10.1111/hae.12448. Epub 2014 May 2.
PMID: 24784937BACKGROUNDGouw SC, van der Bom JG, Ljung R, Escuriola C, Cid AR, Claeyssens-Donadel S, van Geet C, Kenet G, Makipernaa A, Molinari AC, Muntean W, Kobelt R, Rivard G, Santagostino E, Thomas A, van den Berg HM; PedNet and RODIN Study Group. Factor VIII products and inhibitor development in severe hemophilia A. N Engl J Med. 2013 Jan 17;368(3):231-9. doi: 10.1056/NEJMoa1208024.
PMID: 23323899BACKGROUNDAndersson NG, Auerswald G, Barnes C, Carcao M, Dunn AL, Fijnvandraat K, Hoffmann M, Kavakli K, Kenet G, Kobelt R, Kurnik K, Liesner R, Makipernaa A, Manco-Johnson MJ, Mancuso ME, Molinari AC, Nolan B, Perez Garrido R, Petrini P, Platokouki HE, Shapiro AD, Wu R, Ljung R. Intracranial haemorrhage in children and adolescents with severe haemophilia A or B - the impact of prophylactic treatment. Br J Haematol. 2017 Oct;179(2):298-307. doi: 10.1111/bjh.14844. Epub 2017 Jul 12.
PMID: 28699675BACKGROUNDMancuso ME, Fischer K, Santagostino E, Oldenburg J, Platokouki H, Konigs C, Escuriola-Ettingshausen C, Rivard GE, Cid AR, Carcao M, Ljung R, Petrini P, Altisent C, Kenet G, Liesner R, Kurnik K, Auerswald G, Chambost H, Makipernaa A, Molinari AC, Williams M, van den Berg HM; European Pediatric Network for Haemophilia Management (PedNet) the REMAIN (REal life MAnagement of children with INhibitors) Study Group. Risk Factors for the Progression from Low to High Titres in 260 Children with Severe Haemophilia A and Newly Developed Inhibitors. Thromb Haemost. 2017 Dec;117(12):2274-2282. doi: 10.1160/TH17-01-0059. Epub 2017 Dec 6.
PMID: 29212115BACKGROUNDAndersson NG, Chalmers EA, Kenet G, Ljung R, Makipernaa A, Chambost H; PedNet Haemophilia Research Foundation. Mode of delivery in hemophilia: vaginal delivery and Cesarean section carry similar risks for intracranial hemorrhages and other major bleeds. Haematologica. 2019 Oct;104(10):2100-2106. doi: 10.3324/haematol.2018.209619. Epub 2019 Feb 21.
PMID: 30792204BACKGROUNDvan den Berg HM, Fischer K, Carcao M, Chambost H, Kenet G, Kurnik K, Konigs C, Male C, Santagostino E, Ljung R; PedNet Study Group. Timing of inhibitor development in more than 1000 previously untreated patients with severe hemophilia A. Blood. 2019 Jul 18;134(3):317-320. doi: 10.1182/blood.2019000658. Epub 2019 Jun 11. No abstract available.
PMID: 31186271BACKGROUNDMale C, Andersson NG, Rafowicz A, Liesner R, Kurnik K, Fischer K, Platokouki H, Santagostino E, Chambost H, Nolan B, Konigs C, Kenet G, Ljung R, Van den Berg M. Inhibitor incidence in an unselected cohort of previously untreated patients with severe haemophilia B: a PedNet study. Haematologica. 2021 Jan 1;106(1):123-129. doi: 10.3324/haematol.2019.239160.
PMID: 31919092BACKGROUNDvan den Berg HM, Mancuso ME, Konigs C, D'Oiron R, Platokouki H, Mikkelsen TS, Motwani J, Nolan B, Santagostino E; European Pediatric Network for Haemophilia Management (PedNet). ITI Treatment is not First-Choice Treatment in Children with Hemophilia A and Low-Responding Inhibitors: Evidence from a PedNet Study. Thromb Haemost. 2020 Aug;120(8):1166-1172. doi: 10.1055/s-0040-1713097. Epub 2020 Jun 22.
PMID: 32572865BACKGROUNDAndersson NG, Wu R, Carcao M, Claeyssens-Donadel S, Kobelt R, Liesner R, Makipernaa A, Ranta S, Ljung R; ICH study group. Long-term follow-up of neonatal intracranial haemorrhage in children with severe haemophilia. Br J Haematol. 2020 Jul;190(2):e101-e104. doi: 10.1111/bjh.16740. Epub 2020 Jun 9. No abstract available.
PMID: 32519345BACKGROUNDPlatokouki H, Fischer K, Gouw SC, Rafowicz A, Carcao M, Kenet G, Liesner R, Kurnik K, Rivard GE, van den Berg HM. Vaccinations are not associated with inhibitor development in boys with severe haemophilia A. Haemophilia. 2018 Mar;24(2):283-290. doi: 10.1111/hae.13387. Epub 2017 Dec 15.
PMID: 29243367BACKGROUNDKhair K, Ranta S, Thomas A, Lindvall K; PedNet study group. The impact of clinical practice on the outcome of central venous access devices in children with haemophilia. Haemophilia. 2017 Jul;23(4):e276-e281. doi: 10.1111/hae.13241. Epub 2017 May 24.
PMID: 28544163BACKGROUNDHashemi SM, Fischer K, Moons KGM, van den Berg HM; PedNet Study group. Validation of the prediction model for inhibitor development in PUPs with severe haemophilia A. Haemophilia. 2016 Mar;22(2):e116-e118. doi: 10.1111/hae.12895. Epub 2016 Feb 8. No abstract available.
PMID: 26856685BACKGROUNDRanta S, Motwani J, Blatny J, Buhrlen M, Carcao M, Chambost H, Escuriola C, Fischer K, Kartal-Kaess M, de Kovel M, Kenet G, Male C, Nolan B, d'Oiron R, Olivieri M, Zapotocka E, Andersson NG, Konigs C. Dilemmas on emicizumab in children with haemophilia A: A survey of strategies from PedNet centres. Haemophilia. 2023 Sep;29(5):1291-1298. doi: 10.1111/hae.14847. Epub 2023 Aug 30.
PMID: 37647211BACKGROUNDLabarque V, Mancuso ME, Kartal-Kaess M, Ljung R, Mikkelsen TS, Andersson NG. F8/F9 variants in the population-based PedNet Registry cohort compared with locus-specific genetic databases of the European Association for Haemophilia and Allied Disorders and the Centers for Disease Control and Prevention Hemophilia A or Hemophilia B Mutation Project. Res Pract Thromb Haemost. 2023 Jan 10;7(1):100036. doi: 10.1016/j.rpth.2023.100036. eCollection 2023 Jan.
PMID: 36798899BACKGROUNDFischer K, Carcao M, Male C, Ranta S, Pergantou H, Kenet G, Kartal-Kaess M, Konigs C, Carvalho M, Alvarez MT, Brakenhoff T, Chambost H, van den Berg HM. Different inhibitor incidence for individual factor VIII concentrates in 1076 previously untreated patients with severe hemophilia A: data from the PedNet cohort. J Thromb Haemost. 2023 Mar;21(3):700-703. doi: 10.1016/j.jtha.2022.11.020. Epub 2022 Dec 22. No abstract available.
PMID: 36696215BACKGROUNDLjung R, de Kovel M, van den Berg HM; PedNet study group. Primary prophylaxis in children with severe haemophilia A and B-Implementation over the last 20 years as illustrated in real-world data in the PedNet cohorts. Haemophilia. 2023 Mar;29(2):498-504. doi: 10.1111/hae.14729. Epub 2022 Dec 26.
PMID: 36571801BACKGROUNDSchmidt DE, Michalopoulou A, Fischer K, Motwani J, Andersson NG, Pergantou H, Ranta S; PedNet Study Group. Long-term joint outcomes in adolescents with moderate or severe haemophilia A. Haemophilia. 2022 Nov;28(6):1054-1061. doi: 10.1111/hae.14636. Epub 2022 Aug 4.
PMID: 35925557BACKGROUNDAlvarez-Roman MT, Kurnik K; PedNet Study Group. Care for children with haemophilia during COVID-19: Data of the PedNet study group. Haemophilia. 2021 Jul;27(4):e537-e539. doi: 10.1111/hae.14286. Epub 2021 Mar 8. No abstract available.
PMID: 33683753BACKGROUNDMinna K, Anne M, Beatrice N, Rainer K, Susanna R. Correction of haemostasis can be reduced to four days for CVAD implantation in severe haemophilia A patients: Data from the PedNet study group. Haemophilia. 2021 May;27(3):392-397. doi: 10.1111/hae.14231. Epub 2021 Mar 21.
PMID: 33745218BACKGROUNDAndersson NG, Labarque V, Letelier A, Mancuso ME, Buhrlen M, Fischer K, Kartal-Kaess M, Koskenvuo M, Mikkelsen T, Ljung R; PedNet study group. Novel F8 and F9 gene variants from the PedNet hemophilia registry classified according to ACMG/AMP guidelines. Hum Mutat. 2020 Dec;41(12):2058-2072. doi: 10.1002/humu.24117. Epub 2020 Oct 14.
PMID: 32935414BACKGROUNDJonker CJ, Oude Rengerink K, Hoes AW, Mol PGM, van den Berg HM. Inhibitor development in previously untreated patients with severe haemophilia: A comparison of included patients and outcomes between a clinical study and a registry-based study. Haemophilia. 2020 Sep;26(5):809-816. doi: 10.1111/hae.14100. Epub 2020 Jul 6.
PMID: 32627880BACKGROUNDAndersson NG, Labarque V, Kartal-Kaess M, Pinto F, Mikkelsen TS, Ljung R, Group PS. Factor VIII genotype and the risk of developing high-responding or low-responding inhibitors in severe hemophilia A: data from the PedNet Hemophilia Cohort of 1,202 children. Haematologica. 2024 Apr 1;109(4):1293-1296. doi: 10.3324/haematol.2023.284095. No abstract available.
PMID: 37881836BACKGROUNDFischer K, Kenet G, Kurnik K, Carcao M, Oldenburg J, Stamm-Mikkelsen T, Cid Haro AR, Koskenvuo M, Blatny J, Konigs C. Determinants of bleeding before and during immune tolerance in 222 boys with severe hemophilia A and inhibitors >5 BU. Blood Adv. 2024 Jan 23;8(2):369-377. doi: 10.1182/bloodadvances.2023011442.
PMID: 38214949BACKGROUNDvan der Zwet K, de Kovel M, Motwani J, van Geet C, Nolan B, Glosli H, Escuriola Ettingshausen C, Konigs C, Kenet G, Fischer K; PedNet Investigators. Bleeding control improves after switching to emicizumab: Real-world experience of 177 children in the PedNet registry. Haemophilia. 2024 May;30(3):685-692. doi: 10.1111/hae.15015. Epub 2024 Apr 5.
PMID: 38578720BACKGROUNDde Kovel MS, Escuriola-Ettingshausen C, Konigs C, Ranta S, Fischer K; PedNet Study Group. Bleeding phenotype according to factor level in 825 children with nonsevere hemophilia: data from the PedNet cohort. J Thromb Haemost. 2024 Sep;22(9):2460-2469. doi: 10.1016/j.jtha.2024.05.030. Epub 2024 Jun 10.
PMID: 38866249BACKGROUND
Related Links
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Gili Kenet, PhD, MD
The National Hemophilia Center Ministry of Health Sheba Medical Center Ramat Gan, Israel
- STUDY CHAIR
Christoph Male, MD
Medical University of Vienna
- PRINCIPAL INVESTIGATOR
Gili Kenet, PhD, MD
The National Hemophilia Center Ministry of Health Sheba Medical Center Ramat Gan, Israel
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Target Duration
- 18 Years
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director
Study Record Dates
First Submitted
October 21, 2014
First Posted
December 1, 2016
Study Start
June 1, 2014
Primary Completion (Estimated)
December 1, 2039
Study Completion (Estimated)
December 1, 2039
Last Updated
September 16, 2025
Record last verified: 2025-09
Data Sharing
- IPD Sharing
- Will not share