A Multiple Ascending Dose Study to Assess the Safety and Pharmacokinetics of Repeated Intravenous Doses of BTT-1023 in Patients With Rheumatoid Arthritis - a Double-blind Randomized Placebo-controlled Sequential Group Trial

Patients with adult-onset rheumatoid arthritis will be enrolled. They will be dosed with repeated intravenous doses of BTT-1023 or placebo. During the trial, the safety of the treatments and the pharmacokinetics of BTT-1023 will be assessed. The patient allocation to treatment groups will occur at random, and the actual treatment will not be revealed to the investigator or to the patient during the trial.