Cancer patients with vein clots get a closer look: new study aims to fill treatment gap
NCT ID NCT07210671
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at cancer patients who have a type of blood clot called superficial venous thrombosis (SVT). About 15-20% of SVTs happen in people with cancer, but there are no clear treatment guidelines for them. Researchers will observe 1,576 patients to see how different blood thinners affect the risk of clots coming back or getting worse. The goal is to gather real-world data to help doctors make better treatment decisions.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,576 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Nov 2028
An estimate. End dates often move.
- Lead sponsor
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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
Patient with active cancer: * Cancer treatment within the last 6 months, * Detectable tumor disease, cancer treatment within the last 6 months, ongoing hormone therapy for cancer, palliative cancer. * The patient has received potentially non-curative cancer treatment (notably palliative chemotherapy). * Progression shows that the cancer treatment was not curative (due to recurrence or progression under treatment) (particularly in the case of recurrence after surgery)
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Patient over 18 * Patient affiliated to a social security scheme * Patient who understands French * Patient with superficial venous thrombosis of the lower and upper limbs confirmed by a Doppler ultrasound less than one month old. * Patient with active cancer: * Cancer treatment within the last 6 months, * Detectable tumor disease, cancer treatment within the last 6 months, ongoing hormone therapy for cancer, palliative cancer. * The patient has received potentially non-curative cancer treatment (notably palliative chemotherapy). * Progression shows that the cancer treatment was not curative (due to recurrence or progression under treatment) (particularly in the case of recurrence after surgery) Exclusion Criteria: * Patients under legal protection * Patients with concomitant pulmonary embolism * Patient with proximal or distal deep vein thrombosis * Patient treated with anticoagulant therapy for another indication * Patient with a contraindication to anticoagulation: Thrombocytopenia less than 30,000 elements/mm3, active bleeding or history of severe bleeding. * Patient opposed to participation in research
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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CHU Amiens
RECRUITINGAmiens, 80480, France
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