The 2009 ASAS classification criteria did not meet the set targets of 75% sensitivity and 90% specificity in the CLASSIC cohort, indicating the need for revision of these criteria to increase its performance and validity in classification of axSpA. Abst#0820 #ACR24 #ACRBest… https://t.co/lF3QbRUpx3 https://t.co/SHPMpCjizS