Amgen
The main objective is to assess the safety and tolerability of inebilizumab in adult participants with active and refractory systemic lupus erythematosus (SLE) with nephritis (Subprotocol A) and to assess the safety and tolerability of subcutaneous (SC) blinatumomab in adult participants with active and refractory SLE with and without nephritis (Subprotocol B Part A) and in adult participants with active refractory rheumatoid arthritis (RA) (Subprotocol C Part A). The trial will also assess the efficacy of SC blinatumomab in adult participants with active and refractory SLE with and without nephritis (Subprotocol B Part B and Subprotocol C Part B).
\*Subprotocol A and B are no longer recruiting participants\* Inclusion Criteria: * Subprotocol A and B: Diagnosis of SLE according to 2019 European League Against Rheumatism and the American College of Rheumatology (ACR) classification criteria. * Subprotocol A and B: Participant must be positive for at least one of the following autoantibodies at screening (performed by central laboratory) or through documented history: 1. Antinuclear antibodies (ANA) ≥ 1:80 2. Anti-double stranded deoxyribonucleic acid (anti-dsDNA) antibodies elevated to above normal range (ie, positive results) 3.…
IV Infusion
SC Injection