Der blev givet doser på 4 eller 8 mg/ kg tocilizumab eller placebo som blindet behandling hver 4. uge i 52 uger i kombination med stabil dosis MTX (10 mg – 25 mg ugentligt).
Doses of 4 or 8 mg/ kg of tocilizumab or placebo were given every four weeks as blinded therapy for 52 weeks in combination with stable MTX (10 mg to 25 mg weekly).