The investigators designed a single center, open-label, prospective study. Adults with active primary Sjögren's Syndrome will be enrolled, meeting the American College of Rheumatology(ACR) & European allance of associations for rheumatology(EULAR)(2016) diagnostic criteria . Tofacitinib 5 mg bd was administered for 6 months to explore its efficacy and safety. The improvement of clinical and laboratory indexes was evaluated. Changes of immune cell subsets and cytokines were monitored.
This study aims to explore the clinical and immunological efficacy of tofacitinib on primary Sjögren's Syndrome