Human leukocyte antigen-B27-associated uveitis: Long-term follow-up and gender differences

PURPOSE: To evaluate clinical features and gender differences in human leukocyte antigen (HLA)-B27-associated acute anterior uveitis (AAU) in long,term follow-up. DESIGN: Retrospective cohort study. METHODS: The clinical records of 177 HLA-B27-positive patients (96 males [54%] and 81 females [46%]) who sought treatment for acute anterior uveitis (AAU) at the University Medical Center Utrecht between January 1995 and December 2005 were evaluated. All patients had a minimum follow-up of at least one year. The clinical data were analyzed at standardized intervals (one, five, and 10 years after the onset of uveitis). RESULTS: Average age at onset of AAU was 36 years, with no differences between males and females. HLA-B27-associated systemic disease developed earlier in males than in females (31 vs 37 years; P = .021). Consequently, at onset of AAU, HLA-B27-associated systemic disease were more frequent in males than in females (25/75 [33%] males vs nine/54 [17%] females; P = .030); however over time, males and females were at equal risk of developing a HLA-B27-associated systemic disease. Bilateral uveitis developed more frequently in females (6/45 [13%] of males vs 11/35, [31%] of females; P = .05). In none of the patients did bilateral visual acuity of less than 0.5 develop after the follow-up of 10 years. CONCLUSIONS: The long,term visual prognosis of HLA-B27-associated AAU was favorable, despite the frequent attacks of severe AAU. At the onset of AAU, the prevalence of HLA-B27-associated systemic disease was more frequent in males, but after the onset of uveitis, the risk of developing a HLA-B27-associated systemic disease is similar for both males and females.