RecruitingPhase 2Biological interventionEfficacy and Safety of Telitacicept in the Treatment of Refractory Rheumatoid ArthritisThis study is a multicenter, open-label, randomized controlled trial designed to preliminarily evaluate the efficacy and safety of telitacicept in patients with refractory rheumatoid arthritis during a 24-week treatment period followed by a 2-week follow-up period.