SAN DIEGO--(BUSINESS WIRE)--Santarus, Inc. (NASDAQ: SNTS), a specialty biopharmaceutical company, today announced that it has initiated a Phase I clinical study with SAN-300, its anti-VLA-1 antibody. The randomized, placebo-controlled, blinded, single-center, single-dose, dose-escalation study is being conducted in Australia in a total of approximately 60 subjects, including healthy volunteers and two cohorts of patients with rheumatoid arthritis. The objectives of the study are to determine the safety, tolerability, pharmacokinetics and pharmacodynamics of single doses of SAN-300. The company expects to complete this Phase I clinical study with SAN-300 in the first half of 2012.