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New registry aims to unlock secrets of rare bleeding disorder

NCT ID NCT05437536

Knowledge-focused Sponsor: VWD Connect Foundation Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study creates a web-based registry for people with severe von Willebrand disease (sVWD), a rare bleeding disorder. Researchers will collect information from up to 400 participants about their medical history, symptoms, and lab results. The goal is to build a detailed database to support future research and better understand the disease.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this registry could provide valuable insights into severe VWD, helping researchers design better treatments and improve patient care.
What could go wrong
This is an observational registry, not a treatment trial. It relies on self-reported data, which may be incomplete or biased, and results may take years to impact patient care.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 400 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2021

Expected to finish

Dec 2031

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Individuals diagnosed with severe VWD

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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

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Conditions

The condition(s) this trial relates to.

von Willebrand disease (hereditary or acquired) von Willebrand disease 3

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

VWD - von Willebrand's disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • VWD Connect Foundation

    RECRUITING

    Wellington, Florida, 33414, United States

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