In Studies I, II, and V the efficacy and safety of abatacept compared to placebo were assessed in patients with an inadequate response to methotrexate and who continued on their stable dose of methotrexate.
Uuringutes I, II ja V võrreldi abatatsepti efektiivsust ja ohutust platseeboga patsientidel, kellel metotreksaadi raviefekt oli ebapiisav ning kes jätkasid metotreksaadi püsiannuse kasutamist.