EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI) is sensitive to show efficacy of rituximab treatment in a randomised controlled trial

Abstract
Recently, the European League Against Rheumatism (EULAR) developed the EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI).3 ESSDAI was shown to be able to monitor disease activity in patient profile and open-label studies.4 , 5 To further study the utility of ESSDAI for clinical studies, we assessed the responsiveness of ESSDAI after rituximab treatment in a randomised controlled trial (RCT) of patients with pSS.6