ATI-450 Plus Methotrexate (MTX) Versus Placebo Plus MTX in Participants With Moderate to Severe Active Rheumatoid Arthritis (RA)
Conditions
Interventions
- DRUG: ATI-450 50 mg oral tablet BID
- DRUG: Placebo oral tablet
- DRUG: Methotrexate
- DRUG: ATI-450 20 mg oral tablet BID
Sponsor
Aclaris Therapeutics, Inc.