A Study in Patients With Rheumatoid Arthritis

Study I1F-MC-RHAK is a multicenter study in participants with active RA on concomitant conventional DMARD therapy. The study is a Phase 2 study with 2 parts. Part A is a randomized, double-blind, placebo-controlled, parallel-group, dose-ranging design and Part B is an optional, open-label extension design. Two participant populations will be evaluated in this study: bDMARD-naive participants and TNFα-IR participants. Participants in Part A receive multiple subcutaneous injections of LY2439821 \[bDMARD-naive participants: 0 (placebo), 3, 10, 30, 80, or 180 mg; TNFα-IR participants: 0 (placebo), 80 or 180 mg\] at Weeks 0, 1, 2, 4, 6, 8, and 10. Participants in Part B receive subcutaneous injections of LY2439821 160 mg at Weeks 16, 18, and 20, and every 4 weeks thereafter through Week 60. Participants who complete both Part A and B have a total study participation of up to approximately 72 to 84 weeks.