This study is testing a new treatment called SBT777101 for people with rheumatoid arthritis (RA), a disease that causes joint pain and swelling. The treatment uses the patient's own cells, called Treg cells, to help reduce inflammation and balance the immune system. It's the first time this treatment is being tested in humans. Participants will receive just one dose, and the study will check if it's safe and what effects it has.
- Participants will have to attend several visits for tests and monitoring.
- Only those with moderate-to-severe RA and stable on their current medications can join.
- People with certain health conditions, recent surgeries, or infections cannot participate.