Cited by 497Venous Thromboembolism Diagnosis and ManagementSystemic Lupus Erythematosus ResearchBlood Coagulation and Thrombosis Mechanisms

Anticardiolipin Antibodies Predict Early Recurrence of Thromboembolism and Death Among Patients with Venous Thromboembolism Following Anticoagulant Therapy

Schulman, Sam, Svenungsson, Elisabet, Granqvist, Staffan·1998·The American Journal of Medicine

Abstract

Purpose To compare the risk of recurrent venous thromboembolism in patients with and without antiphospholipid antibodies.Patients and methods Anticardiolipin antibodies were tested 6 months after a first or second episode of venous thromboembolism. Of the patients with a first episode of venous thromboembolism only the 412 who received 6 months of anticoagulation were studied. Two hundred and eleven patients with a second episode received oral anticoagulation for 6 months or indefinitely. The therapy was targeted at an international normalized ratio (INR) of 2.0 to 2.85. All patients were followed up for 4 years after enrollment.Results Among the 412 patients with a first episode of venous thromboembolism the risk of recurrence was 29% in patients with anticardiolipin antibodies and 14% in those without antibodies (P = 0.0013). In those with antibodies, there was an increased risk during the first 6 months after cessation of anticoagulation. The risk of recurrence increased with the titer of the antibodies. Four-year mortality rate was 15% in those with antibodies and 6% in those without (P = 0.01). Among 34 patients with a second event of venous thromboembolism and anticardiolipin antibodies, there were no recurrences during anticoagulant therapy versus 20% in those who received only 6 months of treatment (P = 0.08).Conclusions The presence of elevated titers of anticardiolipin antibodies 6 months after an episode of venous thromboembolism is a predictor for an increased risk of recurrence and of death. Patients with anticardiolipin antibodies and venous thromboembolism seem to benefit from prolonged oral anticoagulation.

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Crossref · 10.1016/s0002-9343(98)00060-6

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  • Long-term anticoagulation in antiphospholipid syndrome is supported by two small direct comparison studies showing a lower risk of recurrent venous thrombosis among antiphospholipid syndrome patients on long-term versus 3-6 months of oral anticoagulation.

    “Use of long-term anticoagulation in patients with APS is supported by two small direct comparison studies (one RCT, one retrospective cohort)28 29 that showed a lower risk of recurrent venous thrombosis among patients with APS on long-term vs 3–6 months of oral anticoagulation.”

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Authors
Schulman, S., Svenungsson, E., & Granqvist, S.
Affiliations
  • Karolinska University Hospital (SE)
  • Ersta sjukhus (SE)
Corresponding author
Schulman, Sam
Venue
The American Journal of Medicine
Publisher
Elsevier BV
Published
1998-04
Volume
104
Issue
4
Pages
332-338
ISSN
0002-9343 (ISSN-L)
OpenAlex
W2152900444
Cited by
497
References
24
Citations by year
2026: 3 · 2025: 3 · 2024: 9 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 10 · 2019: 13 · 2018: 9 · 2017: 10 · 2016: 13 · 2015: 8 · 2014: 9 · 2013: 18 · 2012: 21
FWCI
19.61
Type
journal article
Language
en
Open access
closed
Locations
  • The American Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Hjärt-Lungfonden
  • Karolinska Institutet
Topics
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
  • Health Sciences › Medicine › Rheumatology › Systemic Lupus Erythematosus Research
  • Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
Keywords
anticardiolipin antibodies, antiphospholipid antibodies, venous thromboembolism, thromboembolism recurrence, oral anticoagulation, long-term anticoagulation, mortality, antibody titers, international normalized ratio
MeSH terms
Aged, Anticoagulants, Cause of Death, Female, Follow-Up Studies, Humans, Male, Middle Aged, Prognosis, Recurrence, Risk, Thromboembolism, Antibodies, Anticardiolipin

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