Antiphospholipid syndrome
MONDO:8000010A disorder caused by the presence of autoantibodies directed against phospholipids, causing a hypercoaguable state, which may result in blood clots, stroke, heart attack, and in women, significant pregnancy-related complications, including miscarriage and still birth. The syndrome is often associated with other autoimmune disorders, most commonly lupus erythematosus, and infections, including syphilis and Lyme disease.
Also known as: Hughes syndrome, antiphospholipid antibody syndrome, antiphospholipid syndrome, familial lupus anticoagulant, lupus anticoagulant, familial
87 clinical trials for this condition and its sub-types.
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Broader categories
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Fetal stem cells aim to tame immune chaos
Disease control ENROLLING_BY_INVITATIONThis early-stage trial tests clonal fetal mesenchymal stem cells (cfMSCs) in 100 people with severe immune-related disorders or tissue damage. The goal is to see if the cells are safe and can reduce symptoms. Participants have no other treatment options left.
Phase: PHASE1 • Sponsor: Shenzhen Geno-Immune Medical Institute • Aim: Disease control
Last updated Jun 27, 2026 14:01 UTC
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Experimental biologic aims to stop recurrent clots in antiphospholipid syndrome
Disease control OngoingThis early-phase trial tests an investigational biologic called EA5 in adults with antiphospholipid syndrome (APS) who have had two or more blood clots despite standard blood-thinning therapy. The study enrolls about 12 participants and gives EA5 by intravenous infusion followed …
Phase: PHASE1 • Sponsor: Shanghai Lanyi Therapeutics Co., Ltd. • Aim: Disease control
Last updated Jun 27, 2026 13:04 UTC
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Experimental CAR-T therapy targets tough autoimmune conditions
Disease control ENROLLING_BY_INVITATIONThis early-phase study tests a new type of CAR-T cell therapy in 9 people with autoimmune diseases that have not responded well to standard treatments. The therapy uses specially engineered immune cells to target and attack faulty immune cells. The main goal is to check safety an…
Phase: EARLY_PHASE1 • Sponsor: Beijing Boren Hospital • Aim: Disease control
Last updated Jun 27, 2026 13:00 UTC
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Withdrawn study: could hydroxychloroquine help High-Risk pregnancies?
Disease control TerminatedThis study was designed to see if adding hydroxychloroquine to standard treatment (aspirin and heparin) could help women with antiphospholipid syndrome have a healthy full-term pregnancy. It planned to enroll pregnant women before 14 weeks of gestation. However, the trial was wit…
Phase: PHASE2 • Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Disease control
Last updated Jun 27, 2026 12:04 UTC
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New drug RAY121 tested for Long-Term control of autoimmune diseases
Disease control ENROLLING_BY_INVITATIONThis study is a long-term extension of an earlier trial, testing the safety of a drug called RAY121 in people with six different immune system disorders, including antiphospholipid syndrome and immune thrombocytopenia. Participants have already completed four doses of RAY121 and …
Phase: PHASE1 • Sponsor: Chugai Pharmaceutical • Aim: Disease control
Last updated Jun 27, 2026 12:03 UTC
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Blood clot drug trial for rare autoimmune disease pulled before start
Disease control TerminatedThis study aimed to test if crovalimab, added to standard blood thinners, could prevent dangerous blood clots in people with antiphospholipid syndrome (APS). APS is an autoimmune disease that increases clot risk. The trial was withdrawn before enrolling any participants, so no re…
Phase: PHASE2 • Sponsor: Hoffmann-La Roche • Aim: Disease control
Last updated Jun 27, 2026 09:09 UTC
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New tool could predict who will suffer from steroid side effects
Knowledge-focused OngoingThis study aims to create a tool that predicts which patients with inflammatory rheumatic diseases (like rheumatoid arthritis, vasculitis, or polymyalgia rheumatica) will develop serious side effects from long-term steroid use. Researchers will collect routine medical data—such a…
Sponsor: University Hospital, Brest • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:07 UTC
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New MRI study seeks hidden stroke causes in rare blood disorder
Knowledge-focused ENROLLING_BY_INVITATIONThis study looks at why people with antiphospholipid syndrome (APS) — a condition that raises blood clot risk — may have narrowed brain arteries. Researchers will use advanced MRI scans on 60 APS patients to check for artery narrowing and plaque buildup. The goal is to better und…
Sponsor: Chinese University of Hong Kong • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:37 UTC
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New registry aims to unlock safer pregnancies for women with autoimmune conditions
Knowledge-focused ENROLLING_BY_INVITATIONThis registry enrolls up to 1,000 women aged 12–55 with rheumatic or autoimmune diseases who are pregnant or planning pregnancy. Researchers will collect data from medical records and patient surveys to study pregnancy outcomes, disease activity, and medication use. No experiment…
Sponsor: Duke University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:30 UTC
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Rare disease pregnancy study pulled before it began
Knowledge-focused TerminatedThis study was designed to track pregnancies in women with rare autoimmune and systemic diseases to understand complications and improve care. It planned to enroll women with conditions like lupus, rheumatoid arthritis, and scleroderma. However, the study was withdrawn before any…
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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Immune cell showdown: autoimmune vs. infection vs. healthy
Knowledge-focused ENROLLING_BY_INVITATIONThis study looks at immune cells from people with autoimmune diseases (like lupus), people with infections, and healthy volunteers. Researchers want to understand how these cells differ and what makes them attack the body in autoimmune conditions. The study involves blood and bon…
Sponsor: Emory University • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC