Blood test sheds light on hidden clotting disorder
NCT ID NCT06373926
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at a protein called annexin A2 on the surface of certain white blood cells (monocytes) in people with antiphospholipid syndrome, a condition that raises the risk of blood clots and pregnancy complications. Researchers will compare the amount of this protein between patients and healthy volunteers to see if lower levels are linked to the disease. No treatments or drugs are tested — the goal is simply to learn more about what causes the condition.
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
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2025
- Expected to finish
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Mar 2026
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.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * APS patients who fulfilled the revised criteria for APS Exclusion Criteria: * Patients less than 18 years old * Solid and hematological malignancies * Other autoimmune diseases * Cirrhosis
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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, 80054, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a common antiplatelet drug replace warfarin after APS-Related stroke?
- A blood test that could predict clots in autoimmune disease?
- Blood platelet trends may reveal hidden risk in autoimmune disease
- Immune clues in the blood may foretell heart trouble
- Can a simple blood test tell two forms of a clotting disorder apart?
- New fingerstick test for blood thinner monitoring put to the test