Overview Work Productivity in Active Ankylosing Spondylitis (AS) Patients Treated With Enbrel. Status: Completed Trial end date: 2013-12-01 Target enrollment: Participant gender: Summary Patients with Ankylosing spondylitis more frequently discontinue work. This study measures the impact of Enbrel on work participation. Details Lead Sponsor: PfizerTreatments: Etanercept