Clinical trial Recruiting at 1 site Observational Ages Any age to 17

Vonicog alfa (rVWF) use in children with von Willebrand disease

Official title: Vonvendi Intravenous Specified Drug Use-results Survey "Pediatric Administration"

Run by Takeda · NCT07404644 · Data updated 2026-11-12

This observational program will see how vonicog alfa (rVWF) works and whether it causes side effects in children with von Willebrand disease in Japan.

More Von Willebrand Disease (VWD) trials

Quick facts

Study typeObservational
AgesAny age to 17 Years
SexAll
Enrollment13 (estimated)
SponsorTakeda
Industry-sponsored
Locations1 site (Tokyo, Tokyo)
StatusRecruiting
StartedFebruary 19, 2026
Main results expectedMay 30, 2031
Study endsMay 30, 2031
Registry record updatedFebruary 23, 2026
Trial IDNCT07404644 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Children under 18 with von Willebrand disease who receive vonicog alfa for hemostatic treatment during bleeding episodes or perioperative periods in Japan, with administration after pediatric approval, are ideal candidates.

Probably not a fit

Adults, children not treated with rVWF, or patients enrolled in other rVWF clinical trials are not expected to benefit from participation in this observational program.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is an observational follow-up of pediatric patients in Japan who are given vonicog alfa (rVWF) as part of routine care for bleeding episodes or around surgery. Investigators will record adverse drug reactions and clinical effectiveness for one year after the start of rVWF administration. Treatment decisions are made by the patients' physicians under normal practice and the sponsor will only collect data on what happens. Patients already enrolled in other rVWF clinical trials are excluded.

Why it matters

Potential benefit: If successful, the study could provide real-world pediatric safety and effectiveness data to help clinicians and families make more informed treatment decisions.

How similar studies have gone: Recombinant VWF products have shown efficacy and acceptable safety in adults and some pediatric reports, but comprehensive real-world pediatric data remain limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria :

* Under 18 years old with vWD.
* Participants who are treated with rVWF for the purpose of hemostatic treatment and management during bleeding episodes or perioperative periods.
* Participants who have prescription or administration after the approval date of rVWF for pediatric use in Japan.

Exclusion Criteria :

\- Patients who are participating in clinical trials of rVWF.

Where it's running

  • Takeda selected site
    Tokyo, Tokyo, Japan
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.