Achievement of the National Psoriasis Foundation treatment targets with ixekizumab: Pooled analyses from 4 clinical studies

Abstract

The National Psoriasis Foundation (NPF) published treatment targets for US patients with plaque psoriasis. However, data are lacking on how well existing therapies help achieve these goals. To examine the ability of an interleukin 17 inhibitor, ixekizumab, in achieving these treatment targets. Post hoc analysis was performed on pooled data from 4 phase III clinical trials assessing ixekizumab for plaque psoriasis: the UNCOVER-1, -2, and -3 trials and the IXORA-S trial. Treatment response was evaluated using the NPF-defined acceptable response (affected body surface area [BSA] of 3% or less or BSA improvement of 75% or higher at 12weeks of treatment) and target response (BSA of 1% or less at 12weeks and every 6months thereafter). In the UNCOVER trials (n=2701), acceptable and target response rates at week 12 were 73.9% and 51.8% with ixekizumab 80mg every 2weeks, 35.7% and 14.9% with etanercept 50 mg, and 3.0% and 0.6% with placebo, respectively. In the IXORA-S trial (n=302), acceptable and target response rates at week 12 were significantly higher with ixekizumab every 2weeks versus ustekinumab (acceptable response 68.4% vs 38.6%, P<.0001; target response 50.7% vs 24.1%, P<.0001). Data were from controlled studies and may not reflect real-world practice. The majority of patients treated with ixekizumab in 4 phase III clinical trials achieved NPF, patient-centered treatment targets.