This was a Phase 2, double-blind, multicenter, long-term extension (LTE) study to assess the safety, tolerability, and efficacy of 3 doses of ABBV-105 (elsubrutinib [ELS] 5 mg, 20 mg, and 60 mg) and ABBV-599 (ELS 60 mg and upadacitinib [UPA] 15 mg) in adults with active rheumatoid arthritis with inadequate response or intolerance to biologic disease-modifying antirheumatic drugs (bDMARDs). Participants who successfully completed treatment in the feeder Study M16-063, a Phase 2 dose exploratory study, were eligible to participate in this study. Those who met eligibility criteria and entered this study receiving ELS, ABBV-599, or UPA from Study M16-063 continued on their previously assigned treatment through termination of this study. Participants originally randomized to placebo in Study M16-063 rolled over to ABBV-599 in a blinded fashion in this study.
This was a long-term extension (LTE) study to assess the safety, tolerability, and efficacy of ABBV-105 (elsubrutinib [ELS]) and ABBV-599 (ELS 60 mg and upadacitinib [UPA] 15 mg) in participants with rheumatoid arthritis (RA) who completed Study M16-063 (NCT03682705).