Comparison of HLA-B27 negative versus positive patients with ankylosing spondylitis

Investigator

Prof. Dr. Ernst Feldtkeller, vice president ASIF, München, in cooperation with Prof. Dr. M. Asim Khan (Cleveland, Ohio, USA), Prof. Dr. Désirée van der Heijde and Prof. Dr. Sjef van der Linden (University of Maastricht, Netherlands), and Prof. Dr. Jürgen Braun (Herne, Germany).

Method

A questionnaire was published in the in June 2000 newsletters of the AS societies in Germany and Austria. 1080 AS patients responded.

Scientific publication of results

Feldtkeller E, Khan MA, van der Heijde D, van der Linden S, Braun J: Age at disease onset and diagnosis delay in HLA-B27 negative vs. positive patients with ankylosing spondylitis. Rheumatology International 23 (2003) 61–66. 
Patient-adapted publications appeared in newsletters of AS societies in Germany, Austria and Belgium/Flanders.