ArticleJournal of thrombosis and haemostasis : JTH2020
Antiphospholipid antibodies in patients with COVID-19: A relevant observation?
Article in Journal of thrombosis and haemostasis : JTH, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 9 of them syntheses that pooled it.
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Who cites it
106 citing papers in PubMed, 9 syntheses or guidelines pooled it.
- Antiphospholipid Antibodies and COVID-19: A Systematic Review of Clinical Implications.Immunity, inflammation and disease · 2025Pooled it
- Antiphospholipid antibody-related hepatic vasculitis in a juvenile after non-severe COVID-19: a case report and literature review.Frontiers in immunology · 2024Pooled it
- Systematic Review of Antiphospholipid Antibodies in COVID-19 Patients: Culprits or Bystanders?Current rheumatology reports · 2021Pooled it
- Pooled it
- Neurological manifestations and complications of coronavirus disease 2019 (COVID-19): a systematic review and meta-analysis.BMC neurology · 2021Pooled it
- Systematic review and meta-analysis of the prevalence of venous thromboembolic events in novel coronavirus disease-2019 patients.Journal of vascular surgery. Venous and lymphatic disorders · 2021Pooled it
- The JANUS of chronic inflammatory and autoimmune diseases onset during COVID-19 - A systematic review of the literature.Journal of autoimmunity · 2021Pooled it
- Risk of Clinically Relevant Venous Thromboembolism in Critically Ill Patients With COVID-19: A Systematic Review and Meta-Analysis.Frontiers in medicine · 2021Pooled it
- Autoimmune and Rheumatic Manifestations Associated With COVID-19 in Adults: An Updated Systematic Review.Frontiers in immunologyPooled it
- Effect of vitamin DClinics (Sao Paulo, Brazil) · 2024Trial
- Antiphospholipid Antibodies in Severe COVID-19: Frequency, Clinical Features, and 12-Week Follow-Up.Cureus · 2026Article
- Central Retinal Artery Occlusion in a 6-Year-Old Child with an Acute Chickenpox Infection: A Case Report.Journal of clinical medicine · 2025Article
- The Impact of COVID-19 on Graft Vasculopathy and Postoperative Thromboembolism in CABG Patients: A Prospective Controlled Study.Cardiovascular toxicology · 2025Article
- Chilblain-like lesion associated with coronavirus disease 2019 vaccine in tropical country: a case report.Journal of medical case reports · 2025Article
- Autoantibodies in long COVID in a black/mixed population compared with recovered and pre-pandemic controls.Frontiers in immunology · 2025Article
- The endothelial-immunothrombotic storm in viral sepsis: lessons from COVID-19.Frontiers in immunology · 2025Review
- Autoantibodies to protein S may explain rare cases of coagulopathy following COVID-19 vaccination.Scientific reports · 2024Article
- Is lupus anticoagulant testing with dilute Russell's viper venom clotting times reliable in the presence of inflammation?Research and practice in thrombosis and haemostasis · 2024Article
- IgA Anti-β2-Glycoprotein I Antibodies as Markers of Thrombosis and Severity in COVID-19 Patients.Viruses · 2024Article
- Thrombotic Markers in Pregnant Patients with and without SARS-CoV-2 Infection.American journal of perinatology · 2024Article
46 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHigh incidence of thrombosis in COVID-19 patients indicates a hypercoagulable state. Hence, exploring the involvement of antiphospholipid antibodies (aPL) in these patients is of interest.
objectivesTo illustrate the incidence of criteria (lupus anticoagulant [LAC], anticardiolipin [aCL] immunoglobulin G [IgG]/IgM, antibeta2-glycoprotein I antibodies [aβ2GPI] IgG/IgM) and noncriteria (anti-phosphatidyl serine/prothrombin [aPS/PT], aCL, and aβ2GPI IgA) aPL in a consecutive cohort of critically ill SARS-CoV-2 patients, their association with thrombosis, antibody profile and titers of aPL. PATIENTS/
methodsThirty-one consecutive confirmed COVID-19 patients admitted to the intensive care unit were included. aPL were measured at one time point, with part of the aPL-positive patients retested after 1 month.
resultsSixteen patients were single LAC-positive, two triple-positive, one double-positive, one single aCL, and three aCL IgG and LAC positive. Seven of nine thrombotic patients had at least one aPL. Sixteen of 22 patients without thrombosis were aPL positive, amongst them two triple positives. Nine of 10 retested LAC-positive patients were negative on a second occasion, as well as the double-positive patient. Seven patients were aPS/PT-positive associated to LAC. Three patients were aCL and aβ2GPI IgA-positive.
conclusionOur observations support the frequent single LAC positivity during (acute phase) observed in COVID-19 infection; however, not clearly related to thrombotic complications. Triple aPL positivity and high aCL/aβ2GPI titers are rare. Repeat testing suggests aPL to be mostly transient. Further studies and international registration of aPL should improve understanding the role of aPL in thrombotic COVID-19 patients.
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