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New study tests simple blood thinner to protect new moms from deadly clots

NCT ID NCT07140211

Prevention Sponsor: Marc Blondon 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 24, 2026 · Updated 1 time

Summary

This study is testing whether giving new mothers a low-dose blood thinner for just 7-10 days after delivery can prevent blood clots in the legs or lungs. About 9,200 women with certain risk factors (like emergency C-section, obesity, or pre-eclampsia) will either receive the drug or no treatment. The goal is to see if this short-term approach reduces clot risk without causing serious bleeding.

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 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 9,200 people

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

Started

Oct 2025

Expected to finish

Aug 2030

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

Female 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: postpartum women after delivery AND ≥1 major risk factor / ≥2 minor risk factors: * Major risk factors: Emergency cesarean section ; Pre-pregnancy BMI ≥35kg/m2 ; Known low-risk thrombophilia (heterozygous factor V Leiden; heterozygous G20210 prothrombin mutation) ; Pre-eclampsia ; Pre-term delivery ; Peripartum systemic infection ; Intra-uterine growth restriction ; Pregnancy loss * Minor risk factors: Age ≥35 years ; Pre-pregnancy BMI 30.0-34.9kg/m2 ; Current smoking ; Elective cesarean section ; Postpartum hemorrhage ; Antenatal immobility Exclusion Criteria: * ≥2 doses of postpartum LMWH * Any indication for therapeutic anticoagulation * A high-risk of postpartum VTE * An increased bleeding risk * A contra-indication to heparin

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Conditions

The condition(s) this trial relates to.

puerperal disorder venous thromboembolism prevention target

As listed by the trial registrant

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

Postpartum Venous thromboembolism (VTE)

How to take part

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

  1. The places running it

    8 sites. 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

  • Centre Hospitalier Universitaire Vaudois

    RECRUITING

    Lausanne, Switzerland

  • Ente Ospedaliero Cantonale

    RECRUITING

    Lugano, Switzerland

  • Geneva University Hospitals

    RECRUITING

    Geneva, Switzerland

  • Hôpital du Valais

    RECRUITING

    Sion, Switzerland

  • Kantonsspital Baden

    RECRUITING

    Baden, Switzerland

  • Lindenhofspital

    RECRUITING

    Bern, Switzerland

  • Réseau Hospitalier Neuchâtelois

    RECRUITING

    Neuchâtel, Switzerland

  • Universitätsspital Basel

    RECRUITING

    Basel, Switzerland

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