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New study tests Clot-Busting procedure for severe leg clots

NCT ID NCT06472518

Disease control Sponsor: Nantes University Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compares two treatments for severe blood clots in the leg: a procedure that breaks up and removes the clot (pharmacomechanical thrombolysis) plus standard blood thinners, versus blood thinners alone. About 228 adults with recent, very symptomatic clots will take part. The goal is to see which approach is more cost-effective and reduces long-term complications like post-thrombotic syndrome.

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.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 228 people

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

Started

May 2026

Expected to finish

Sep 2029

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.

Ages

18 years and older

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: * Patients who agreed to participate in the study and gave oral consent. * Patient affiliated to a social security scheme * Iliac and/or common femoral venous thrombosis * Recent thrombosis less than or equal to 14 days since qualifying imaging or less than or equal to 21 days since onset of symptoms And at least 1 of the following criteria: * Visual analog scale greater than or equal to 5 and/or * Venous claudication and/or * Increase in thigh circumference greater than or equal to 5% compared with contralateral thigh. Exclusion Criteria: * Patients with superficial femoral or popliteal venous thrombosis without involvement of the common femoral or iliac veins. * Patients with isolated thrombosis of the inferior vena cava, without extension to the iliac veins. * Thrombosis of inferior vena cava proximal to the renal veins. * Minors, pregnant women, adults under guardianship. * Chronic renal failure with creatinine clearance below 30ml/min according to Cockroft. * Ischaemic phlebitis: proximal venous thrombosis associated with limb ischemia and impaired arterial flow.

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As listed by the trial registrant

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

Iliofemoral venous thrombosis

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

  • Dr Olivier Espitia

    RECRUITING

    Nantes, 44000, France