New hope for rare bleeding disorder: Long-Term drug shows promise
NCT ID NCT03879135
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tested a drug called rVWF (Vonvendi) in 38 children and adults with severe von Willebrand disease, a bleeding disorder. The goal was to see if regular use of the drug could reduce the number of spontaneous bleeding episodes over a year. Participants received treatment for up to three years, and researchers tracked safety and bleeding rates.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Recombinant von Willebrand factor (rVWF, also called Vonvendi or Vonicog alfa)
What this could lead to
If successful, this could provide a long-term treatment option to prevent spontaneous bleeding episodes in people with severe von Willebrand disease.
What could go wrong
This is a small, open-label study with no control group, so results may not apply to all patients. Side effects or lack of effectiveness in some individuals remain possible.
Disclaimer
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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AKH - Medizinische Universität Wien
Vienna, Austria
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Arkansas Children's Hospital Research Institute
Little Rock, Arkansas, 72202, United States
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Azienda Ospedaliera Pediatrica Santobono Pausillipon
Naples, Italy
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Azienda Ospedaliera Universitaria Careggi
Florence, 50134, Italy
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Azienda Ospedaliera Universitaria Policlinico Umberto I - Università di Roma La Sapienza
Roma, 00185, Italy
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Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, 45229, United States
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Ege University Medical Faculty
Izmir, 35040, Turkey (Türkiye)
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Ege University Medical Faculty
Izmir, 35100, Turkey (Türkiye)
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Erasmus Medisch Centrum
Rotterdam, 3015 AA, Netherlands
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Erasmus Medisch Centrum
Rotterdam, 3015 CN, Netherlands
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FSBI of Science "Kirov Scientific and Research Institute of Hematology and Blood Transfusion of FMBA
Kirov, 610017, Russia
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Fondazione IRCCS CA' Granda Ospedale Maggiore Policlinico
Milan, Italy
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Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Roma, 00168, Italy
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Groupe Hospitalier Pellegrin - Hôpital Pellegrin
Gironde, France
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Groupement Hospitalier Est- Hôpital Louis Pradel
Bron, 69677, France
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Groupement Hospitalier Sud - Hôpital Bicêtre
Le Kremlin-Bicêtre, 94270, France
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Hopital Cardiologique - CHU Lille
Lille, Nord, France
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Hospital General Universitario de Alicante
Alicante, 03010, Spain
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Hospital Universitari i Politecnic La Fe
Valencia, 46026, Spain
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Hospital Universitario La Paz
Madrid, 28046, Spain
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Hôpital Necker - Enfants Malades
Paris, Paris, 75015, France
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Indiana Hemophilia and Thrombosis Center
Indianapolis, Indiana, 46260, United States
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Istanbul University Oncology Institute
Istanbul, Turkey (Türkiye)
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Klinikum der Johann Wolfgang Goethe-Universitaet
Frankfurt, Germany
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Medical University of South Carolina (MUSC)
Charleston, South Carolina, 29425, United States
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Nationwide Children's Hospital
Columbus, Ohio, 43205, United States
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Ondokuz Mayis Univ. Med. Fac.
Samsun, 55139, Turkey (Türkiye)
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Ospedale Pediatrico Bambino Gesù
Roma, Italy
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Rainbow Babies and Children's Hospital
Cleveland, Ohio, 44106, United States
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SAIH "Kemerovo Regional Clinical Hospital"
Kemerovo, 650066, Russia
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University of Colorado Health
Aurora, Colorado, 80045, United States
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University of Florida College of Medicine
Gainesville, Florida, 32610, United States
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Werlhof-Institut GmbH
Hanover, Germany