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Clinical activity in patients receiving 3 mg/kg SC pateclizumabor placebo. ACR20, ACR50 and ACR70 = 20%, 50% and 70% improvement, respectively, in tender or swollen joint counts, as well as 20%, 50% and 70% improvement, respectively, in three of the other five American College of Rheumatology criteria for rheumatoid arthritis; DAS28-CRP = Disease Activity Score in 28 joints, C-reactive protein; SC = subcutaneously.
