Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and Clinical Effects of Multiple Rising Subcutaneous Doses of BI 655064 in Healthy Volunteers and in Rheumatoid Arthritis Patients With Prior Inadequate Response to Methotrexate Therapy

To evaluate the safety and tolerability of multiple doses of BI 655064 administered subcutaneously in healthy volunteers (HVs) and in rheumatoid arthritis (RA) patients. To explore the pharmacokinetic (PK) and pharmacodynamic (PD) parameters of multiple doses of BI 655064 in healthy volunteers (HVs) and rheumatoid arthritis (RA) patients. To assess clinical effect of BI 655064 in RA patients with prior inadequate response to methotrexate (MTX) after 12 weeks of treatment