The invention provides methods, uses and compositions for the treatment of ankylosing spondylitis (AS). The invention describes methods and uses for treating ankylosing spondylitis, wherein a TNFa inhibitor, such as a human TNFa antibody, or antigen-binding portion thereof, is used to reduce signs and symptoms of ankylosing spondylitis in a subject. Also described are methods for determining the efficacy of a TNFa inhibitor for treatment of ankylosing spondylitis in a subject.
