Overview Safety and Efficacy Study of Fostamatinib to Treat Immunoglobin A (IgA) Nephropathy Status: Completed Trial end date: 2018-11-12 Target enrollment: Participant gender: Summary The purpose of this study is to determine whether fostamatinib is safe and effective in the treatment of IgA Nephropathy Phase: Phase 2 Details Lead Sponsor: Rigel Pharmaceuticals