Assessing the risk of post-thrombotic syndrome in patients with deep vein thrombosis
Official title: Baseline Ultrasound Venous Thrombosis Burden and the Risk of Post-thrombotic Syndrome in Patients With a First Acute Episode of Symptomatic Deep Vein Thrombosis of the Lower Limbs - The "DVT-Burden" Project -
Run by Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer · NCT06385353 · Data updated 2026-11-12
This study is trying to find out which patients with a first-time blood clot in their leg are more likely to develop post-thrombotic syndrome so that better treatments can be offered.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 400 (estimated) |
| Sponsor | Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer Academic / other |
| Locations | 27 sites (Vichy, Allier and 26 other locations) |
| Status | Recruiting |
| Started | June 5, 2024 |
| Main results expected | June 2027 |
| Study ends | June 2027 |
| Registry record updated | July 7, 2026 |
| Trial ID | NCT06385353 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are adults aged 18 years and older who have been diagnosed with acute deep venous thrombosis of the lower limbs.
✕Probably not a fit
Patients with conditions such as active cancer, bilateral venous thrombosis, or those who are pregnant or breastfeeding may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This multicenter prospective cohort study aims to evaluate the burden of deep vein thrombosis (DVT) and other prognostic factors that may predict the occurrence and severity of post-thrombotic syndrome (PTS). Patients diagnosed with a first episode of DVT in the lower limbs will be recruited and monitored through follow-up visits at one week, one month, three months, and six months. During these visits, clinical assessments, venous ultrasound evaluations, and blood samples will be collected to analyze inflammation and coagulation factors. The study seeks to identify high-risk patients to improve treatment strategies and reduce the incidence of PTS.
Why it matters
Potential benefit: If successful, this study could lead to better prevention and management strategies for patients at risk of developing post-thrombotic syndrome.
How similar studies have gone: Other studies have explored prognostic markers for post-thrombotic syndrome, but this specific approach focusing on DVT burden is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Age ≥ 18 years 2. Patients with symptomatic acute deep venous thrombosis of the lower limbs confirmed by ultrasound on the criteria of venous incompressibility and direct image of the thrombus (patients with stable pulmonary embolism associated with a symptomatic deep venous thrombosis can be included) 3. Affiliates or beneficiaries of a social security scheme. Exclusion Criteria: 1. Pregnant women, women in labour or breastfeeding mothers. 2. Pulmonary embolism haemodynamically unstable defined by systolic blood pressure \< 90 mmHg or a drop in systolic blood pressure of at least 40 mmHg during at least 15 min, shock or cardiac arrest. 3. Asymptomatic venous thrombosis. 4. Symptomatic venous thrombosis of both lower limbs (patients with bilateral deep venous thrombosis but symptomatic on one side only can be included). 5. History of ipsilateral or contralateral venous thrombosis of the lower limb. 6. Fracture or orthopedic surgery of the lower limbs in the last 3 months. 7. Dependance caused by age or secondary to a chronic affection, going from the inability to stand up or walk alone without help to bed or armchair rest over. 8. Prophylactic or therapeutic anticoagulant treatment \> 5 days. 9. Expected duration of anticoagulant treatment \< 3 months (all patients must have a minimum treatment of 3 months). 10. Patient estimated at high risk of bleeding according to investigator clinical judgment (renal, platelet, digestive, hepatic, neurological... origin) . 11. Indication for interruption of the inferior vena cava or venous recanalisation (endovascular, thrombolysis or surgery). 12. Refusal or inability to give written informed consent to participate in the study. 13. Life expectancy \< 6 months. 14. Patients under legal protection (guardianship, curatorship, etc.) or safeguard of justice. 15. Patients taking part in a research project for venous thromboembolism that can interfere with the conduct of DVT-BURDEN research.
Where it's running
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CH de Vichy
Vichy, Allier, France Recruiting -
Centre Hospitalier de Carcassonne
Carcassonne, Aude, France Recruiting -
Hôpital Saint Joseph
Marseille, Bouches-du-Rhône, France Recruiting -
Hôpital La Timone, AP-HM
Marseille, Bouches-du-Rhône, France Recruiting -
Cabinet libéral
Ajaccio, Corse-du-sud, France Recruiting -
Cabinet libéral
Ajaccio, Corse-du-sud, France Recruiting
Show 21 more locations
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CHU de Dijon
Dijon, Côte d'Or, France Recruiting -
CHU de Besançon
Besançon, Doubs, France Recruiting -
Centre Hospitalier Universitaire de Brest
Brest, Finistère, France Recruiting -
Clinique Rive Gauche
Toulouse, Haut-Garonne, France Recruiting -
CHU de Toulouse
Toulouse, Haute-Garonne, France Recruiting -
CHU Saint Etienne
Saint-Priest-en-Jarez, Pays de la Loire Region, France Recruiting -
Hospices Civils de Lyon, Hôpital Edouard Herriot
Lyon, Rhône, France Recruiting -
Centre Hospitalier Universitaire Amiens Picardie
Amiens, Somme, France Recruiting -
Polyclinique Les Fleurs
Ollioules, Var, France Recruiting -
Cabinet libéral
Sanary-sur-Mer, Var, France Recruiting -
Cabinet libéral
Six-Fours-les-Plages, Var, France Recruiting -
Centre Hospitalier Intercommunal Toulon La Seyne-sur-Mer
Toulon, Var, France Recruiting -
Centre Hospitalier d'Avignon
Avignon, Vaucluse, France Recruiting -
Centre Hospitalier Universitaire de Nantes
Nantes, France Recruiting -
Hôpital Saint Joseph
Paris, France Recruiting -
Hôpital Européen Georges Pompidou
Paris, France Recruiting -
Hôpital d'Aubagne
Aubagne, Bouches-du-Rhône, France Not yet recruiting -
Cabinet libéral
Martigues, Bouches-du-Rhône, France Terminated -
Centre de Santé Polyvalent de UGESSAP
Montoir-de-Bretagne, Loire-Atlantique, France Terminated -
Centre Hospitalier de Fréjus/Saint-Raphaël
Fréjus, Var, France Terminated -
Centre cardio-vasculaire Esterel
Saint-Raphaël, Var, France Withdrawn
Study contacts
- Study coordinator: Magali CESANA
- Email: magali.cesana@ch-toulon.fr
- Phone: 0483772060
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Registry of patients treated for venous thromboembolism
This study is tracking patients with blood clots to see how different treatments work and to help with future research.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.