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Keywords = low-titer aPL

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19 pages, 5686 KB  
Review
Non-Criteria Obstetric Antiphospholipid Syndrome: Myth or Reality?
by Sara Beça, Maria Borrell, Ricard Cervera, Francesc Figueras, Alfons Nadal, Gerard Espinosa and Núria Baños
J. Clin. Med. 2025, 14(4), 1299; https://doi.org/10.3390/jcm14041299 - 15 Feb 2025
Cited by 5 | Viewed by 4871
Abstract
Women with adverse pregnancy outcomes suggestive of obstetric antiphospholipid syndrome (OAPS), but not fulfilling clinical and/or laboratory international classification criteria, are increasingly recognized both in clinical practice and in the literature. This entity is termed non-criteria OAPS (NC-OAPS). It includes clinical scenarios such [...] Read more.
Women with adverse pregnancy outcomes suggestive of obstetric antiphospholipid syndrome (OAPS), but not fulfilling clinical and/or laboratory international classification criteria, are increasingly recognized both in clinical practice and in the literature. This entity is termed non-criteria OAPS (NC-OAPS). It includes clinical scenarios such as two unexplained pregnancy losses, three non-consecutive pregnancy losses, late pre-eclampsia/eclampsia/signs of placental insufficiency, or recurrent implantation failure, as well as positive low-titers of antiphospholipid antibodies (aPLs) and non-classical aPLs. To address the NC-OAPS heterogeneity, a nomenclature proposal was developed. In recent years, retrospective and prospective cohort studies have been designed to clarify the characteristics and outcomes of the different subsets of NC-OAPS. In general, the studies support that NC-OAPS may benefit from treatment with antithrombotic, anticoagulant and/or immunomodulator agents, but several considerations must be made on the robustness and nuances of the scientific evidence. The objective of this review is to critically analyze the available evidence supporting the diagnosis of NC-OAPS, categorize its subsets, and evaluate the impact of treatment strategies on its outcome. We also remark on questions that are still unanswered, such as the lack of consensus on diagnostic criteria or treatment protocols. Full article
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