A Study to Evaluate Efficacy and Safety of ASP015K in Patients With Rheumatoid Arthritis (RA) Who Had an Inadequate Response to Methotrexate (MTX) Treatment
Conditions
Interventions
- DRUG: Peficitinib
- DRUG: Placebo
- DRUG: Methotrexate
Sponsor
Astellas Pharma Inc