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New hope for haemophilia a patients: immune tolerance induction may eliminate clotting factor blockers

NCT ID NCT02207894

Disease control Sponsor: Haemophilia Centre Rhine Main 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether a treatment called immune tolerance induction (ITI) can help people with haemophilia A who have developed inhibitors—antibodies that block standard clotting factor therapy. Researchers will give high doses of individualized factor VIII concentrates to 300 male patients of any age. The goal is to see if ITI can lower inhibitor levels and restore normal clotting factor activity, reducing bleeding episodes.

What this could mean

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

Active substance
Factor VIII concentrates (individualized selection) and high-dose immune tolerance induction (ITI)
What this could lead to
If successful, this could help haemophilia A patients with inhibitors regain effective clotting factor treatment, reducing bleeding risks.
What could go wrong
This is an observational study, not a controlled trial, so results may be less definitive. ITI can be lengthy and may not work for all patients.

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 300 people

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

Start date

Aug 2006

Expected to finish

Dec 2027

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

all male patients with haemophilia A and inhibitor

Ages

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

Sex

Male participants only

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: * Based on the decision of the treating physicians in the participating centres, male patients at any age suffering from severe (FVIII activity \< 1%), moderate (FVIII activity \>1% - 5%), or mild (FVIII activity \> 5%) haemophilia A will be included into this post marketing observation if relevant inhibitor levels (\> 0.6 BU) have been detected, or - in case of an inhibitor level \<0.6 BU - with reduced recovery or half-life of FVIII. * The observation is also open for patients who failed an earlier ITI attempt. Exclusion Criteria: * Female

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Conditions

The condition(s) this trial relates to.

hemophilia A

As listed by the trial registrant

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

Haemophilia A

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

  • Haemophilia Centre Rhine Main

    RECRUITING

    Frankfurt am Main, Hesse, 60596, Germany

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