TY - JOUR T1 - 2019 American College of Rheumatology/European League Against Rheumatism classification criteria for IgG4-related disease by Wallace <em>et al</em> JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis DO - 10.1136/annrheumdis-2020-217086 SP - annrheumdis-2020-217086 AU - Byung-Woo Yoo AU - Jason Jungsik Song AU - Yong-Beom Park AU - Sang-Won Lee Y1 - 2020/02/13 UR - http://ard.bmj.com/content/early/2020/02/13/annrheumdis-2020-217086.abstract N2 - We read with interest the original article by Wallace et al proposing the new classification for IgG4-related disease (IgG4-RD).1 So far, the comprehensive diagnostic criteria for IgG4-RD (the comprehensive criteria) have been widely used,2 but recently, the 2019 American College of Rheumatology (ACR) and the European League Against Rheumatism (EULAR) classification criteria for IgG4-RD have been developed and validated (the 2019 ACR/EULAR criteria). To determine the agreement rate between the comprehensive and the 2019 ACR/EULAR criteria, we applied the 2019 ACR/EULAR criteria to 40 patients with definite IgG4-RD based on the comprehensive criteria and retrospectively reviewed their medical records. Based on the inclusion criteria of the 2019 ACR/EULAR criteria, total points of ≥20 indicated the classification of IgG4-RD.The mean age of the patients was 60.2 years, and 29 patients (72.5%) were men. With respect to the immunostaining items, no points were assigned to five patients for … ER -