Background Antiphospholipid syndrome (APS) is an autoimmune disease characterized by
persistent antiphospholipid antibodies (aPLs) positivity with a wide manifestation spectrum …

Objective Although systemic lupus erythematosus (SLE) is the most common autoimmune
disease associated with antiphospholipid antibodies (aPL), limited data exist regarding the …

Objective To describe the baseline characteristics of patients with positivity for
antiphospholipid antibodies (aPLs) who were enrolled in an international registry, the …

OBJECTIVE: To describe baseline characteristics of antiphospholipid antibody (aPL)-
positive patients, overall and by clinical and laboratory subtypes, enrolled in an international …

Background Seronegative antiphospholipid syndrome (SN-APS) is often defined as the
presence of APS criteria manifestations, negative antiphospholipid antibodies (aPL), and …

Background From this retrospective study, we aimed to (1) describe the prevalence and
characteristics of non-criteria features in primary antiphospholipid syndrome (p-APS) and (2) …

Objectives Antiphospholipid antibodies (aPL) are present in a proportion of patients with
rheumatoid arthritis but their clinical significance remains unclear. We investigated the …

Background Despite expansion in the 2006 Sydney antiphospholipid syndrome (APS)
classification criteria to include IgG/IgM anti-β2-glycoprotein (aβ2GPI) antibodies in addition …

Objectives To identify the aggregation of patients with aPL into different subgroups sharing
common features in terms of clinical and laboratory phenotypes. Methods We applied a …

We read with great interest the article by Otomo et al, which provided a formula for improved
risk assessment in patients with APS by determining the aPL-S (1). Their addition of assays …