Overview Evaluation of Long-term Safety and Effectiveness of Fostamatinib in the Treatment of Rheumatoid Arthritis (RA) Status: Terminated Trial end date: 2015-01-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the long term safety and tolerability of fostamatinib in patients with rheumatoid arthritis (RA). Phase: Phase 3 Details Lead Sponsor: AstraZeneca