Clinical trial Recruiting at 1 site Interventional Ages 18 to 50

Assessing venous thromboembolism risk in pregnant women

Official title: Prospective Multicentre Randomized Clinical Trial on the Management of Pregnancies With High Risk of Venous Thrombosis

Run by Hospices Civils de Lyon · NCT03659708 · Data updated 2026-11-12

This study is testing a new tool to see if it can help doctors figure out which pregnant women are at risk for blood clots so they can provide better care.

More Pregnancy trials

Quick facts

Study typeInterventional
Ages18 Years to 50 Years
SexAll
Enrollment600 (estimated)
SponsorHospices Civils de Lyon
Academic / other
Locations1 site (Bron)
StatusRecruiting
StartedJanuary 22, 2021
Main results expectedOctober 22, 2031
Study endsOctober 22, 2031
Registry record updatedMay 15, 2026
Trial IDNCT03659708 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adult pregnant women with a personal history of VTE or thrombophilia who are at high risk for VTE.

Probably not a fit

Patients who may not benefit from this study include those with contraindications to heparin therapy or those with obstetrical complications without a history of VTE.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate the risk of venous thromboembolism (VTE) in pregnant women using a newly developed risk stratification tool called the Lyon-VTE score. The tool is designed to help clinicians assess individual risk factors for VTE and make informed decisions regarding prophylactic anticoagulation. By tailoring management strategies based on this score, the study seeks to improve outcomes for pregnant women at high risk of VTE. The study will involve adult pregnant women with a personal history of VTE or thrombophilia who consent to participate.

Why it matters

Potential benefit: If successful, this study could lead to more effective prevention of VTE in pregnant women, reducing complications and improving maternal and fetal health.

How similar studies have gone: Other studies have shown success with similar risk stratification approaches in different populations, but this specific tool is novel in the context of pregnancy.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult pregnant women at high risk of VTE (with a personal history of VTE and/or thrombophilia)
* At the time of inclusion, be at most in the 7th month of pregnancy
* giving informed consent to participate to the study

Exclusion Criteria:

* contraindication to heparin therapy,
* women with obstetrical complications only, with no history of VTE (pre-eclampsia, HELLP\[ Hemolysis, Elevated Liver enzymes, Low Platelet count\],intra-uterine growth retardation, miscarriage, etc),
* patients with a history of superficial venous thrombosis, and those with the highest VTE risk for whom clear recommendations with a high level of evidence are available (patients on long-term anticoagulants, or those with antiphospholipid syndrome or antithrombin deficiency).
* Patient participating in an ongoing study that could interfere with the study,
* Patient under legal protection measure.

Where it's running

  • Hôpital Cardiologique L. Pradel
    Bron, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.