:   Drug: Fostamatinib and placebo injections;   Drug: Fostamatinib and placebo injections;   Drug: Fostamatinib and placebo injections;   Drug: Adalimumab and placebo of fostamatinib;   Drug: Placebo of fostamatinib, fostamatinib, and placebo injections
Sponsor:   AstraZeneca
Recruiting - verified August 2011