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Clinical efficacy and safety of adalimumab versus etanercept in patients with ankylosing spondylitis and total spinal ankylosis in Croatia: a multicentre 12-month follow-up study

Objective To evaluate the 12-month efficacy and safety profile of adalimumab and etanercept in patients with ankylosing spondylitis (AS) and total spinal ankylosis (TSA). Type of study design Case- series follow-up study. Design Twenty-eight patients (26 men and 2 women) with active AS (BASDAI > 4) and TSA were treated as follows: 19 patients receiving adalimumab and 9 patients receiving etanercept. Twelve-month data related to the efficacy and safety of these two TNF-alpha inhibitors were evaluated. The primary endpoint was ASAS 20 (the ASsessment in AS International Working Group criteria for 20% improvement) at weeks 12 and 52. Other measures that were evaluated were function (BASFI), disease activity (BASDAI), patient’s and physician’s global disease assessment on visual analogue scale (VAS) and C- reactive protein. Results In both adalimumab and etanercept groups, there was a significant improvement in all observed variables (baseline compared to weeks 12 and 52). This improvement was sustained for the whole follow-up period. In the adalimumab group, at week 12, ASAS 20 was achieved in 18/19 patients and at week 52 in 17/19 patients. In the etanercept group, at week 12 ASAS 20 was achieved in all patients and at week 52 in 6/9 patients. Conclusion In patients with active AS and TSA, adalimumab and etanercept treatment showed significant improvement in function and disease activity. No serious side effects or adverse effects were observed in our cohort.

Adalimumab ; Ankylosis spinal ; Efficacy ; Etanercept ; Safety ; Spondylitis ankylosans.

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