Massive study tracks methotrexate in 10,000 arthritis patients

This study is tracking 10,000 Chinese adults with rheumatoid arthritis who are starting or continuing a drug called subcutaneous methotrexate. Researchers want to see how well it works and how safe it is in everyday medical practice, including in patients with additional lung or heart problems. The study does not change the patient's treatment plan, just observes their progress over 24 weeks.