Observational Non-Interventional Study With Enbrel (Etanercept) in Patients With Ankylosing Spondylitis

"The patients will be treated in accordance with the requirements of the labeling of Enbrel® in Austria. The dosage and duration of therapy is to be determined by the physician to meet the patients' individual needs for treatment.~To record complete dosing information, initial dose will be documented at baseline and any change will be documented with date, dose and reason at the subsequent visits."