Venous thromboembolism (VTE) is the third most common cause of death worldwide. The
incidence of VTE varies according to different countries, ranging from 1–2 per 1000 person …

Importance Systemic lupus erythematosus (SLE) is a chronic autoimmune disease
characterized by inflammation and immune-mediated injury to multiple organ systems …

Objective To develop new antiphospholipid syndrome (APS) classification criteria with high
specificity for use in observational studies and trials, jointly supported by the American …

Background This is the 2nd update to the 9th edition of these guidelines. We provide
recommendations on 17 PICO (Population, Intervention, Comparator, Outcome) questions …

These guidelines are dedicated to the memory of Dr Clive Kearon of McMaster University in
Hamilton, Ontario, Canada. Dr Kearon extensively reviewed the first and second versions of …

Thrombotic complications and coagulopathy frequently occur in COVID-19. However, the
characteristics of COVID-19-associated coagulopathy (CAC) are distinct from those seen …

The core pathology of coronavirus disease 2019 (COVID-19) is infection of airway cells by
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that results in excessive …

Infection with severe acute respiratory syndrome coronavirus 2 associates with diverse
symptoms, which can persist for months. While antiviral antibodies are protective, those …

This guidance focuses on methodological aspects of lupus anticoagulant (LA) testing, as
well as interpretation of results for clinicians. The main changes in how to test for LA …

Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease propelled by
circulating autoantibodies that recognize cell surface phospholipids and phospholipid …