To evaluate the efficacy of fontolizumab in subjects with active rheumatoid arthritis as determined by a 50% improvement of an American College of Rheumatology criteria (ACR50) response at Week 14 (Stage A of study).~Stage B of this trial is Double blind.
To evaluate the efficacy of fontolizumab in subjects with active rheumatoid arthritis as determined by a 50% improvement of an American College of Rheumatology criteria (ACR50) response at Week 14 (Stage A of study).