Overview Phase IIIB Subcutaneous Abatacept Monotherapy Study Status: Completed Trial end date: 2014-02-01 Target enrollment: Participant gender: Summary To evaluate safety and immunogenicity of abatacept when used with or without methotrexate in the absence of an IV loading dose of abatacept Phase: Phase 3 Details Lead Sponsor: Bristol-Myers SquibbTreatments: AbataceptMethotrexate