Registry for patients with severe Von Willebrand Disease

The Severe Von Willebrand Disease Patient Registry: A Longitudinal Natural History and Patient Outcomes Study

Observational VWD Connect Foundation · NCT05437536

This study is creating a database to gather information from people with severe Von Willebrand Disease to help improve future research and treatments.

Quick facts

Study typeObservational
Enrollment400 (estimated)
SexAll
SponsorVWD Connect Foundation Academic / other
Locations1 site (Wellington, Florida)
Trial IDNCT05437536 on ClinicalTrials.gov

What this trial studies

This registry aims to collect comprehensive data on patients diagnosed with severe Von Willebrand Disease (sVWD) through a web-based platform. Participants will self-report their medical history, symptoms, and laboratory data, which will be used to create a detailed database for future research. Initially, the registry will focus on patients residing in the United States, with potential expansion to other regions. Participants will provide informed consent and may be contacted for future studies based on their interest.

Who should consider this trial

Good fit: Ideal candidates for this registry are individuals with a clinical diagnosis of Von Willebrand Disease and Von Willebrand factor levels below 20%.

Not a fit: Patients with acquired Von Willebrand Disease will not benefit from this registry.

Why it matters

Potential benefit: If successful, this registry could enhance understanding of severe Von Willebrand Disease and facilitate the development of targeted treatments.

How similar studies have performed: While registries for rare diseases have shown success in gathering valuable data, this specific approach for sVWD is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Anyone meeting the diagnostic classification for von Willebrand disease
2. Any VWF antigen or activity:

   a. Result \<20% regardless of bleeding phenotype, or b. Result \<30% with excessive bleeding symptoms including: i. Bleeding that resulted in hospitalization, required surgical procedure, red blood cell transfusion, Hemoglobin decrease \>2g/dL, or ii. Intracranial, intraspinal, pericardial, retroperitoneal, intramuscular bleeding with compartment syndrome, or iii. Persistent or recurrent bleeding that is disruptive of work or school.
3. Provide informed consent by participant or legally authorized representative
4. Be willing and able to comply with study procedures and data collection
5. Reside in the United States

NOTE: For inclusion criteria 1 and 2, it is not expected that participants will submit evidence of clinical diagnosis at screening; a participant's own confirmation that they have severe VWD will be sufficient for meeting the enrollment requirement and obtaining access to the registry. Laboratory values will be provided during the conduct of the study, and participants with VWF antigen or activity not meeting inclusion criterion 2 may be excluded from data analysis on a case-by-case basis in consultation with a subcommittee of the VWD Connect Foundation Medical and Scientific Advisory Board.

Exclusion Criteria:

1\. Have a clinical diagnosis of acquired VWD

Where this trial is running

Wellington, Florida

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions VWD - Von Willebrand's DiseaseVWDSevere VWDVWD Type 1 SevereVWD Type 1CVWD Type 2AVWD Type 2B SevereVWD Type 2M Severe
Last reviewed 2026-06-13 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.