This is the first study of oral tofacitinib in adults with active ankylosing spondylitis. It is designed to obtain information on the efficacy and safety of 3 different doses of tofacitinib.

Read more: http://www.clinicaltrials.gov/ct2/show/NCT01786668?cond=%22Arthritis%22&lup_s=10/31/2013&lup_d=30