TY - JOUR T1 - Response to: ‘Do 2019 European League against rheumatism/American College of Rheumatology classification criteria for systemic lupus erythematosus also indicate the disease activity?’ by Teng <em>et al</em> JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - e23 LP - e23 DO - 10.1136/annrheumdis-2020-217105 VL - 81 IS - 2 AU - Martin Aringer AU - Karen Costenbader AU - Thomas Dörner AU - Sindhu R Johnson Y1 - 2022/02/01 UR - http://ard.bmj.com/content/81/2/e23.abstract N2 - The letter by Dr Teng and colleagues1 describes an interesting intellectual exercise. In showing that the scores of the European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) 2019 classification criteria for systemic lupus erythematosus (SLE)2 3 correlate very well (r=0.81) with the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) in their SLE patient cohort, they have added disease activity to the concepts inter-related to the new SLE criteria. These relationships, which were discussed for SLE disease severity or ‘ominousity’ early in the criteria development process,2 3 may have more overlap than we usually think based on theoretical concepts. In this way, the data by Dr … ER -