IL10 and Behcet disease: It might be that the IL10 polymorphism is preferentially involved in eye or central nervous system lesions, since the prevalence of the IL10 polymorphism in patients with BD was higher in the discovery phase (76%) than in the replication phase (71%) whereas its prevalence was similar in controls in both phases (68% in the discovery phase vs. 71–72% in the replication phase).