ArticleModern rheumatology2022
Antiphospholipid antibodies in COVID-19-associated pneumonia patients in intensive care unit.
Article in Modern rheumatology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 5 syntheses or guidelines pooled it, 28 citations in OpenAlex.
- Prevalence of autoantibody responses in COVID-19 patients: a systematic review and meta-analysis.BMC infectious diseases · 2025Pooled it
- Antiphospholipid antibodies in patients with COVID-19: a systematic review and meta-analysis.Journal of thrombosis and thrombolysis · 2025Pooled it
- Antiphospholipid Antibodies and COVID-19: A Systematic Review of Clinical Implications.Immunity, inflammation and disease · 2025Pooled it
- Autoantibodies as potential prognostic factors for clinical outcomes related to COVID-19: a systematic review of inception prospective cohort studies with GRADE recommendations.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2025Pooled it
- Systematic Review of Antiphospholipid Antibodies in COVID-19 Patients: Culprits or Bystanders?Current rheumatology reports · 2021Pooled it
- The New Occurrence of Antiphospholipid Syndrome in Severe COVID-19 Cases with Pneumonia and Vascular Thrombosis Could Explain the Post-COVID Syndrome.Biomedicines · 2025Article
- The well-defined antiphospholipid syndrome induced by COVID-19: a rare case report and review of the literature.Thrombosis journal · 2024Review
- SAMD1 attenuates antiphospholipid syndrome-induced pregnancy complications.Immunity, inflammation and disease · 2023Article
- COVID-19 and the antiphospholipid syndrome.Autoimmunity reviews · 2022Review
- SAMD1 attenuates antiphospholipid syndrome-induced vascular injury and pregnancy complications.Immunity, inflammation and disease · 2022Article
- COVID-19 and antiphospholipid antibodies.Best practice & research. Clinical haematology · 2022Review
- Pathogenesis of Two Faces of DVT: New Identity of Venous Thromboembolism as Combined Micro-Macrothrombosis via Unifying Mechanism Based on "Two-Path Unifying Theory" of Hemostasis and "Two-Activation Theory of the Endothelium".Life (Basel, Switzerland) · 2022Review
- Research trends and frontiers on antiphospholipid syndrome: A 10-year bibliometric analysis (2012-2021).Frontiers in pharmacology · 2022Article
- Anti-prothrombin autoantibodies enriched after infection with SARS-CoV-2 and influenced by strength of antibody response against SARS-CoV-2 proteins.PLoS pathogens · 2021Article
- The Role of Antiphospholipid Antibodies in COVID-19.Current rheumatology reports · 2021Review
- Untangling the Intricacies of Infection, Thrombosis, Vaccination, and Antiphospholipid Antibodies for COVID-19.SN comprehensive clinical medicine · 2021Review
- Association of Lupus Anticoagulant status with Disease Course in SARS-CoV-2 (COVID-19) Infection.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/HemostasisArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesAntiphospholipid antibodies (APAs) increase the risk of excessive blood clotting, but their role in COVID-19 remains unclear. We aimed to investigate the presence of conventional APAs used in the classification of antiphospholipid antibody syndrome in patients with severe lung infection with SARS-CoV-2 and to compare these results with non-COVID-19 critically ill patients.
methodsThirty-one COVID-19 patients (COVID group) and 28 non-COVID-19 critically ill patients (non-COVID group), were included in the study. Anti-cardiolipin (ACA) (IgG, IgM), anti-β2-glycoprotein 1 (Anti-β2GPI) (IgG, IgM, and IgA), and if the patient had not received any anti thrombotic agent before blood collection, lupus anticoagulant (LAC) tests were studied from the plasma of the patients. For testing ACA and Anti-β2GPI, ELISA method was used, while fully automated coagulometer device was used for LAC test.
resultsAPAs were positive in 25.81% in the COVID group (8/31) and 25% in the non-COVID group (7/28). LAC was the most common APA present in 23.08% of the COVID-19 group, who underwent measurement (6/26), while 3.57% of the non-COVID group was LAC positive (1/28) (p = .047). In the COVID group, ACA IgM, and IgG were positive in 6.45% and 0%, respectively (2/31 vs 0/31). In the non-COVID group, ACA IgM was not positive in any patient, while ACA IgG was positive in 7.14% (2/28). Anti-β2GPI IgG and IgM tests were not positive in any patient in either the COVID or the non-COVID group. Anti-β2GPI IgA were positive in 6.45% and 14.29%, respectively (2/31 vs 4/28).
conclusionIn this study, APAs were equally positive in critically ill patients among COVID-19 or non-COVID-19 patients. Only LAC was more observed in COVID-19 patients. KEY MESSAGES:
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.