[Ankylosing spondylitis in monozygous twins. Study of HLA complex (author's transl)]

A study of HLA complex (HLA A, B, C, DRw, Bf, chiddo) in monozygous twins suffering from ankylosing spondylitis with different clinical courses. All the markers studied were identified. The results would tend to suggest that hereditary factors are not alone responsible in the course of ankylosing spondylitis. Furthermore, they are not the sole causative factor of the disease since the literature contains reports of discordant pairs of twins.