Phase II Study of RR110 in Patients With Active Crohn's Disease

Inclusion Criteria: * Patients with CDAI score ranging from 220 to 450 * Patients with CRP \> 1 mg/dL * Patients who can be hospitalized at least 2 weeks after first administration Exclusion Criteria: * Patients who have previously used anti-TNF antibody, cyclosporine, methotrexate or tacrolimus within 12 weeks of screening * Patients who have had surgical bowel resections within 4 weeks of screening * Patients who have previously used total parental nutrition or more than 900 kcal/day of enteral nutrition within 4 weeks of screening