The 2023 <scp>ACR</scp>/<scp>EULAR</scp> Antiphospholipid Syndrome Classification Criteria

These new ACR/EULAR APS classification criteria were developed using rigorous methodology with multidisciplinary international input. Hierarchically clustered, weighted, and risk-stratified criteria reflect the current thinking about APS, providing high specificity and a strong foundation for future APS research.